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apache / geode / refs/heads/sga2 / . / gemfire-core / src / main / java / com / gemstone / gemfire / internal / cache / Oplog.java
blob: f2384f04615f59c2c30c4054f22e530eff067f65 [file] [log] [blame]
/*=========================================================================
* Copyright (c) 2010-2014 Pivotal Software, Inc. All Rights Reserved.
* This product is protected by U.S. and international copyright
* and intellectual property laws. Pivotal products are covered by
* one or more patents listed at http://www.pivotal.io/patents.
*=========================================================================
*/
package com.gemstone.gemfire.internal.cache;
import it.unimi.dsi.fastutil.ints.Int2ObjectMap;
import it.unimi.dsi.fastutil.ints.Int2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectMap;
import it.unimi.dsi.fastutil.longs.Long2ObjectOpenHashMap;
import it.unimi.dsi.fastutil.objects.ObjectIterator;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.DataInput;
import java.io.DataInputStream;
import java.io.DataOutput;
import java.io.DataOutputStream;
import java.io.EOFException;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InterruptedIOException;
import java.io.SyncFailedException;
import java.nio.ByteBuffer;
import java.nio.channels.ClosedChannelException;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicLong;
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
import org.apache.logging.log4j.Logger;
import com.gemstone.gemfire.CancelException;
import com.gemstone.gemfire.DataSerializer;
import com.gemstone.gemfire.SerializationException;
import com.gemstone.gemfire.cache.CacheClosedException;
import com.gemstone.gemfire.cache.CacheWriterException;
import com.gemstone.gemfire.cache.DiskAccessException;
import com.gemstone.gemfire.cache.EntryDestroyedException;
import com.gemstone.gemfire.cache.EntryEvent;
import com.gemstone.gemfire.cache.EntryNotFoundException;
import com.gemstone.gemfire.cache.RegionDestroyedException;
import com.gemstone.gemfire.cache.TimeoutException;
import com.gemstone.gemfire.cache.UnsupportedVersionException;
import com.gemstone.gemfire.distributed.OplogCancelledException;
import com.gemstone.gemfire.distributed.internal.DM;
import com.gemstone.gemfire.internal.Assert;
import com.gemstone.gemfire.internal.ByteArrayDataInput;
import com.gemstone.gemfire.internal.FileUtil;
import com.gemstone.gemfire.internal.HeapDataOutputStream;
import com.gemstone.gemfire.internal.InsufficientDiskSpaceException;
import com.gemstone.gemfire.internal.InternalDataSerializer;
import com.gemstone.gemfire.internal.InternalStatisticsDisabledException;
import com.gemstone.gemfire.internal.Sendable;
import com.gemstone.gemfire.internal.Version;
import com.gemstone.gemfire.internal.cache.DiskEntry.Helper.Flushable;
import com.gemstone.gemfire.internal.cache.DiskEntry.Helper.ValueWrapper;
import com.gemstone.gemfire.internal.cache.DiskInitFile.DiskRegionFlag;
import com.gemstone.gemfire.internal.cache.DiskStoreImpl.OplogCompactor;
import com.gemstone.gemfire.internal.cache.DiskStoreImpl.OplogEntryIdSet;
import com.gemstone.gemfire.internal.cache.DistributedRegion.DiskPosition;
import com.gemstone.gemfire.internal.cache.lru.EnableLRU;
import com.gemstone.gemfire.internal.cache.lru.NewLRUClockHand;
import com.gemstone.gemfire.internal.cache.persistence.BytesAndBits;
import com.gemstone.gemfire.internal.cache.persistence.DiskRecoveryStore;
import com.gemstone.gemfire.internal.cache.persistence.DiskRegionView;
import com.gemstone.gemfire.internal.cache.persistence.DiskStoreID;
import com.gemstone.gemfire.internal.cache.persistence.UninterruptibleFileChannel;
import com.gemstone.gemfire.internal.cache.persistence.UninterruptibleRandomAccessFile;
import com.gemstone.gemfire.internal.cache.versions.CompactVersionHolder;
import com.gemstone.gemfire.internal.cache.versions.RegionVersionHolder;
import com.gemstone.gemfire.internal.cache.versions.RegionVersionVector;
import com.gemstone.gemfire.internal.cache.versions.VersionHolder;
import com.gemstone.gemfire.internal.cache.versions.VersionSource;
import com.gemstone.gemfire.internal.cache.versions.VersionStamp;
import com.gemstone.gemfire.internal.cache.versions.VersionTag;
import com.gemstone.gemfire.internal.i18n.LocalizedStrings;
import com.gemstone.gemfire.internal.logging.LogService;
import com.gemstone.gemfire.internal.logging.log4j.LocalizedMessage;
import com.gemstone.gemfire.internal.logging.log4j.LogMarker;
import com.gemstone.gemfire.internal.offheap.MemoryChunkWithRefCount;
import com.gemstone.gemfire.internal.offheap.OffHeapHelper;
import com.gemstone.gemfire.internal.offheap.SimpleMemoryAllocatorImpl;
import com.gemstone.gemfire.internal.offheap.StoredObject;
import com.gemstone.gemfire.internal.offheap.annotations.Released;
import com.gemstone.gemfire.internal.offheap.annotations.Retained;
import com.gemstone.gemfire.internal.sequencelog.EntryLogger;
import com.gemstone.gemfire.internal.shared.NativeCalls;
import com.gemstone.gemfire.internal.util.BlobHelper;
import com.gemstone.gemfire.internal.util.IOUtils;
import com.gemstone.gemfire.internal.util.TransformUtils;
import com.gemstone.gemfire.pdx.internal.PdxWriterImpl;
/**
* Implements an operation log to write to disk. As of prPersistSprint2 this
* file only supports persistent regions. For overflow only regions see
* {@link OverflowOplog}.
*
* @author Darrel Schneider
* @author Mitul Bid
* @author Asif
*
* @since 5.1
*/
public final class Oplog implements CompactableOplog, Flushable {
private static final Logger logger = LogService.getLogger();
/** Extension of the oplog file * */
public static final String CRF_FILE_EXT = ".crf";
public static final String DRF_FILE_EXT = ".drf";
public static final String KRF_FILE_EXT = ".krf";
/** The file which will be created on disk * */
private File diskFile;
/** boolean marked true when this oplog is closed * */
private volatile boolean closed;
private final OplogFile crf = new OplogFile();
private final OplogFile drf = new OplogFile();
private final KRFile krf = new KRFile();
/** preallocated space available for writing to* */
// volatile private long opLogSpace = 0L;
/** The stats for this store */
private final DiskStoreStats stats;
/** The store that owns this Oplog* */
private final DiskStoreImpl parent;
/**
* The oplog set this oplog is part of
*/
private final PersistentOplogSet oplogSet;
/** oplog id * */
protected final long oplogId;
/** recovered gemfire version * */
protected Version gfversion;
/**
* Recovered version of the data. Usually this is same as {@link #gfversion}
* except for the case of upgrading disk store from previous version in which
* case the keys/values are carried forward as is and need to be interpreted
* in load by latest product code if required.
*/
protected Version dataVersion;
/** Directory in which the file is present* */
private DirectoryHolder dirHolder;
/** The max Oplog size (user configurable) * */
private final long maxOplogSize;
private long maxCrfSize;
private long maxDrfSize;
private final AtomicBoolean hasDeletes = new AtomicBoolean();
private boolean firstRecord = true;
/**
* This system property instructs that writes be synchronously written to disk
* and not to file system. (Use rwd instead of rw - RandomAccessFile property)
*/
private static final boolean SYNC_WRITES = Boolean.getBoolean("gemfire.syncWrites");
/**
* The HighWaterMark of recentValues.
*/
private final AtomicLong totalCount = new AtomicLong(0);
/**
* The number of records in this oplog that contain the most recent value of
* the entry.
*/
private final AtomicLong totalLiveCount = new AtomicLong(0);
private final ConcurrentMap<Long, DiskRegionInfo> regionMap = new ConcurrentHashMap<Long, DiskRegionInfo>();
/**
* Set to true once compact is called on this oplog.
*
* @since prPersistSprint1
*/
private volatile boolean compacting = false;
/**
* Set to true after the first drf recovery.
*/
private boolean haveRecoveredDrf = true;
/**
* Set to true after the first crf recovery.
*/
private boolean haveRecoveredCrf = true;
private OpState opState;
/** OPCODES - byte appended before being written to disk* */
/**
* Written to CRF, and DRF.
*/
private static final byte OPLOG_EOF_ID = 0;
private static final byte END_OF_RECORD_ID = 21;
/**
* Written to CRF and DRF. Followed by 16 bytes which is the leastSigBits and
* mostSigBits of a UUID for the disk store we belong to. 1: EndOfRecord Is
* written once at the beginning of every oplog file.
*/
private static final byte OPLOG_DISK_STORE_ID = 62;
static final int OPLOG_DISK_STORE_REC_SIZE = 1 + 16 + 1;
/**
* Written to CRF. Followed by 8 bytes which is the BASE_ID to use for any
* NEW_ENTRY records. 1: EndOfRecord Only needs to be written once per oplog
* and must preceed any OPLOG_NEW_ENTRY_0ID records.
*
* @since prPersistSprint1
*/
private static final byte OPLOG_NEW_ENTRY_BASE_ID = 63;
static final int OPLOG_NEW_ENTRY_BASE_REC_SIZE = 1 + 8 + 1;
/**
* Written to CRF. The OplogEntryId is +1 the previous new_entry OplogEntryId.
* Byte Format: 1: userBits RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_NEW_ENTRY_0ID = 64;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 1 byte. Byte Format: 1:
* userBits 1: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_1ID = 65;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 2 bytes. Byte Format: 1:
* userBits 2: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_2ID = 66;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 3 bytes. Byte Format: 1:
* userBits 3: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_3ID = 67;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 4 bytes. Byte Format: 1:
* userBits 4: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_4ID = 68;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 5 bytes. Byte Format: 1:
* userBits 5: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_5ID = 69;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 6 bytes. Byte Format: 1:
* userBits 6: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_6ID = 70;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 7 bytes. Byte Format: 1:
* userBits 7: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_7ID = 71;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 8 bytes. Byte Format: 1:
* userBits 8: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_8ID = 72;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 1 byte. Byte Format: 1:
* userBits 1: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_1ID = 73;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 2 bytes. Byte Format: 1:
* userBits 2: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_2ID = 74;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 3 bytes. Byte Format: 1:
* userBits 3: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_3ID = 75;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 4 bytes. Byte Format: 1:
* userBits 4: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_4ID = 76;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 5 bytes. Byte Format: 1:
* userBits 5: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_5ID = 77;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 6 bytes. Byte Format: 1:
* userBits 6: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_6ID = 78;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 7 bytes. Byte Format: 1:
* userBits 7: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_7ID = 79;
/**
* Written to CRF. The OplogEntryId is relative to the previous mod_entry
* OplogEntryId. The signed difference is encoded in 8 bytes. Byte Format: 1:
* userBits 8: OplogEntryId RegionId 4: valueLength (optional depending on
* bits) valueLength: value bytes (optional depending on bits) 4: keyLength
* keyLength: key bytes 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_MOD_ENTRY_WITH_KEY_8ID = 80;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 1 byte. Byte Format: 1:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_1ID = 81;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 2 bytes. Byte Format: 2:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_2ID = 82;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 3 bytes. Byte Format: 3:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_3ID = 83;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 4 bytes. Byte Format: 4:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_4ID = 84;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 5 bytes. Byte Format: 5:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_5ID = 85;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 6 bytes. Byte Format: 6:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_6ID = 86;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 7 bytes. Byte Format: 7:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_7ID = 87;
/**
* Written to DRF. The OplogEntryId is relative to the previous del_entry
* OplogEntryId. The signed difference is encoded in 8 bytes. Byte Format: 8:
* OplogEntryId 1: EndOfRecord
*
* @since prPersistSprint1
*/
private static final byte OPLOG_DEL_ENTRY_8ID = 88;
/**
* The maximum size of a DEL_ENTRY record in bytes. Currenty this is 10; 1 for
* opcode and 8 for oplogEntryId and 1 for END_OF_RECORD_ID
*/
private static final int MAX_DELETE_ENTRY_RECORD_BYTES = 1 + 8 + 1;
/**
* Written to beginning of each CRF. Contains the RVV for all regions in the
* CRF. Byte Format 8: number of regions (variable length encoded number) for
* each region 4: number of members (variable length encoded number) for each
* member 4: canonical member id (variable length encoded number) 8: version
* id (variable length encoded number) 4: number of exceptions (variable
* length encoded number) variable: exceptions
*/
private static final byte OPLOG_RVV = 89;
/**
* When detected conflict, besides persisting the golden copy by modify(),
* also persist the conflict operation's region version and member id. and
* failedWritten to beginning of each CRF. Contains the RVV for all regions in
* the CRF. Byte Format regionId versions
*/
private static final byte OPLOG_CONFLICT_VERSION = 90;
/**
* persist Gemfire version string into crf, drf, krf Byte Format variable
* gemfire version string, such as 7.0.0.beta EndOfRecord
*/
private static final byte OPLOG_GEMFIRE_VERSION = 91;
static final int OPLOG_GEMFIRE_VERSION_REC_SIZE = 1 + 3 + 1;
/**
* Persist oplog file magic number. Written once at the beginning of every
* oplog file; CRF, DRF, KRF, IF and IRF. Followed by 6 byte magic number.
* Each oplog type has a different magic number Followed by EndOfRecord Fix
* for bug 43824
*
* @since 8.0
*/
static final byte OPLOG_MAGIC_SEQ_ID = 92;
public static enum OPLOG_TYPE {
CRF(new byte[] { 0x47, 0x46, 0x43, 0x52, 0x46, 0x31 }), // GFCRF1
DRF(new byte[] { 0x47, 0x46, 0x44, 0x52, 0x46, 0x31 }), // GFDRF1
IRF(new byte[] { 0x47, 0x46, 0x49, 0x52, 0x46, 0x31 }), // GFIRF1
KRF(new byte[] { 0x47, 0x46, 0x4b, 0x52, 0x46, 0x31 }), // GFKRF1
IF(new byte[] { 0x47, 0x46, 0x49, 0x46, 0x30, 0x31 }); // GFIF01
private byte[] bytes;
OPLOG_TYPE(byte[] byteSeq) {
this.bytes = byteSeq;
}
public byte[] getBytes() {
return bytes;
}
public static int getLen() {
return 6;
}
}
public static final int OPLOG_MAGIC_SEQ_REC_SIZE = 1 + OPLOG_TYPE.getLen() + 1;
/** Compact this oplogs or no. A client configurable property * */
private final boolean compactOplogs;
/**
* Asif: This object is used to correctly identify the OpLog size so as to
* cause a switch of oplogs
*/
final Object lock = new Object();
final ByteBuffer[] bbArray = new ByteBuffer[2];
private boolean lockedForKRFcreate = false;
/**
* Set to true when this oplog will no longer be written to. Never set to
* false once it becomes true.
*/
private boolean doneAppending = false;
/**
* Extra bytes to be skipped before reading value bytes. Value is currently 6
* : 1 byte for opcode, 1 byte for userbits and 4 bytes for value length.
*/
private static final long SKIP_BYTES = 6;
private static final ByteBuffer EMPTY = ByteBuffer.allocate(0);
// ///////////////////// Constructors ////////////////////////
/**
* Creates new <code>Oplog</code> for the given region.
*
* @param oplogId
* int identifying the new oplog
* @param dirHolder
* The directory in which to create new Oplog
*
* @throws DiskAccessException
* if the disk files can not be initialized
*/
Oplog(long oplogId, PersistentOplogSet parent, DirectoryHolder dirHolder) {
if (oplogId > DiskId.MAX_OPLOG_ID) {
throw new IllegalStateException("Too many oplogs. The oplog id can not exceed " + DiskId.MAX_OPLOG_ID);
}
this.oplogId = oplogId;
this.oplogSet = parent;
this.parent = parent.getParent();
this.dirHolder = dirHolder;
// Pretend we have already seen the first record.
// This will cause a large initial record to force a switch
// which allows the maxDirSize to be checked.
this.firstRecord = false;
this.opState = new OpState();
long maxOplogSizeParam = getParent().getMaxOplogSizeInBytes();
long availableSpace = this.dirHolder.getAvailableSpace();
if (availableSpace < maxOplogSizeParam) {
if (DiskStoreImpl.PREALLOCATE_OPLOGS && !DiskStoreImpl.SET_IGNORE_PREALLOCATE) {
throw new InsufficientDiskSpaceException(LocalizedStrings.Oplog_PreAllocate_Failure_Init.toLocalizedString(this.dirHolder,
maxOplogSizeParam), new IOException("not enough space left to create and pre grow oplog files, available="
+ availableSpace + ", required=" + maxOplogSizeParam), getParent());
}
this.maxOplogSize = availableSpace;
if (logger.isDebugEnabled()) {
logger.debug("Reducing maxOplogSize to {} because that is all the room remaining in the directory.", availableSpace);
}
} else {
this.maxOplogSize = maxOplogSizeParam;
}
setMaxCrfDrfSize();
this.stats = getParent().getStats();
this.compactOplogs = getParent().getAutoCompact();
this.closed = false;
String n = getParent().getName();
this.diskFile = new File(this.dirHolder.getDir(), oplogSet.getPrefix() + n + "_" + oplogId);
try {
createDrf(null);
createCrf(null);
// open krf for offline compaction
if (getParent().isOfflineCompacting()) {
krfFileCreate();
}
} catch (Exception ex) {
close();
getParent().getCancelCriterion().checkCancelInProgress(ex);
if (ex instanceof DiskAccessException) {
throw (DiskAccessException) ex;
}
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_CREATING_OPERATION_LOG_BECAUSE_0.toLocalizedString(ex),
getParent());
}
}
/**
* Asif: A copy constructor used for creating a new oplog based on the
* previous Oplog. This constructor is invoked only from the function
* switchOplog
*
* @param oplogId
* integer identifying the new oplog
* @param dirHolder
* The directory in which to create new Oplog
* @param prevOplog
* The previous oplog
*/
private Oplog(long oplogId, DirectoryHolder dirHolder, Oplog prevOplog) {
if (oplogId > DiskId.MAX_OPLOG_ID) {
throw new IllegalStateException("Too many oplogs. The oplog id can not exceed " + DiskId.MAX_OPLOG_ID);
}
this.oplogId = oplogId;
this.parent = prevOplog.parent;
this.oplogSet = prevOplog.oplogSet;
this.dirHolder = dirHolder;
this.opState = new OpState();
long maxOplogSizeParam = getParent().getMaxOplogSizeInBytes();
long availableSpace = this.dirHolder.getAvailableSpace();
if (prevOplog.compactOplogs) {
this.maxOplogSize = maxOplogSizeParam;
} else {
if (availableSpace < maxOplogSizeParam) {
this.maxOplogSize = availableSpace;
if (logger.isDebugEnabled()) {
logger.debug("Reducing maxOplogSize to {} because that is all the room remaining in the directory.", availableSpace);
}
} else {
this.maxOplogSize = maxOplogSizeParam;
}
}
setMaxCrfDrfSize();
this.stats = prevOplog.stats;
this.compactOplogs = prevOplog.compactOplogs;
// copy over the previous Oplog's data version since data is not being
// transformed at this point
this.dataVersion = prevOplog.getDataVersionIfOld();
this.closed = false;
String n = getParent().getName();
this.diskFile = new File(this.dirHolder.getDir(), oplogSet.getPrefix() + n + "_" + oplogId);
try {
createDrf(prevOplog.drf);
createCrf(prevOplog.crf);
// open krf for offline compaction
if (getParent().isOfflineCompacting()) {
krfFileCreate();
}
} catch (Exception ex) {
close();
getParent().getCancelCriterion().checkCancelInProgress(ex);
if (ex instanceof DiskAccessException) {
throw (DiskAccessException) ex;
}
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_CREATING_OPERATION_LOG_BECAUSE_0.toLocalizedString(ex),
getParent());
}
}
public void replaceIncompatibleEntry(DiskRegionView dr, DiskEntry old, DiskEntry repl) {
boolean useNextOplog = false;
synchronized (this.lock) {
if (getOplogSet().getChild() != this) {
// make sure to only call replaceIncompatibleEntry for child, because
// this.lock
// can only sync with compaction thread on child oplog
useNextOplog = true;
} else {
// This method is use in recovery only and will not be called by
// compaction.
// It's only called before or after compaction. It will replace
// DiskEntry
// in DiskRegion without modifying DiskId (such as to a new oplogId),
// Not to change the entry count in oplog either. While doing that,
// this.lock will lock the current child to sync with compaction thread.
// If replace thread got this.lock, DiskEntry "old" will not be removed
// from
// current oplog (maybe not child). If compaction thread got this.lock,
// DiskEntry "old" should have been moved to child oplog when replace
// thread
// processes it.
// See #48032. A new region entry has been put into the region map, but
// we
// also have to replace it in the oplog live entries that are used to
// write
// the krf. If we don't, we will recover the wrong (old) value.
getOrCreateDRI(dr).replaceLive(old, repl);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"replacing incompatible entry key = {} old = {} new = {} oldDiskId = {} new diskId = {} tag = {} in child oplog #{}",
old.getKey(), System.identityHashCode(old), System.identityHashCode(repl), old.getDiskId(), repl.getDiskId(), old
.getVersionStamp(), this.getOplogId());
}
}
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(getOplogSet().getChild() != this);
getOplogSet().getChild().replaceIncompatibleEntry(dr, old, repl);
}
}
private void writeDiskStoreRecord(OplogFile olf, OPLOG_TYPE type) throws IOException {
this.opState = new OpState();
this.opState.initialize(type);
writeOpLogBytes(olf, false, true);
olf.currSize += getOpStateSize();
this.dirHolder.incrementTotalOplogSize(getOpStateSize());
clearOpState();
this.opState.initialize(getParent().getDiskStoreID());
writeOpLogBytes(olf, false, true); // fix for bug 41928
olf.currSize += getOpStateSize();
this.dirHolder.incrementTotalOplogSize(getOpStateSize());
}
private void writeGemfireVersionRecord(OplogFile olf) throws IOException {
if (this.gfversion == null) {
this.gfversion = Version.CURRENT;
}
Version dataVersion = getDataVersionIfOld();
if (dataVersion == null) {
dataVersion = Version.CURRENT;
}
// if gfversion and dataVersion are not same, then write a special token
// version and then write both, else write gfversion as before
// this is for backward compatibility with 7.0
this.opState = new OpState();
if (this.gfversion == dataVersion) {
writeProductVersionRecord(this.gfversion, olf);
} else {
writeProductVersionRecord(Version.TOKEN, olf);
clearOpState();
writeProductVersionRecord(this.gfversion, olf);
clearOpState();
writeProductVersionRecord(dataVersion, olf);
}
}
private void writeProductVersionRecord(Version version, OplogFile olf) throws IOException {
this.opState.initialize(version.ordinal());
writeOpLogBytes(olf, false, true);
olf.currSize += getOpStateSize();
this.dirHolder.incrementTotalOplogSize(getOpStateSize());
}
public final Version currentRecoveredGFVersion() {
return this.gfversion;
}
/**
* Write an RVV record containing all of the live disk regions.
*/
private void writeRVVRecord(OplogFile olf, boolean writeGCRVV) throws IOException {
writeRVVRecord(olf, getParent().getAllDiskRegions(), writeGCRVV);
}
/**
* Write the RVV record for the given regions.
*
* @param olf
* the oplog to write to
* @param diskRegions
* the set of disk regions we should write the RVV of
* @param writeGCRVV
* true to write write the GC RVV
* @throws IOException
*/
private void writeRVVRecord(OplogFile olf, Map<Long, AbstractDiskRegion> diskRegions, boolean writeGCRVV) throws IOException {
this.opState = new OpState();
this.opState.initialize(diskRegions, writeGCRVV);
writeOpLogBytes(olf, false, true); // fix for bug 41928
olf.currSize += getOpStateSize();
this.dirHolder.incrementTotalOplogSize(getOpStateSize());
}
private boolean wroteNewEntryBase = false;
/**
* Write a OPLOG_NEW_ENTRY_BASE_ID to this oplog. Must be called before any
* OPLOG_NEW_ENTRY_0ID records are written to this oplog.
*/
private boolean writeNewEntryBaseRecord(boolean async) throws IOException {
if (this.wroteNewEntryBase)
return false;
this.wroteNewEntryBase = true;
long newEntryBase = getOplogSet().getOplogEntryId();
OpState saved = this.opState;
try {
this.opState = new OpState();
this.opState.initialize(newEntryBase);
writeOpLogBytes(this.crf, async, false/* no need to flush this record */);
this.dirHolder.incrementTotalOplogSize(getOpStateSize());
} finally {
this.opState = saved;
}
return true;
}
/**
* Return true if this oplog has a drf but does not have a crf
*/
boolean isDrfOnly() {
return this.drf.f != null && this.crf.f == null;
}
/**
* This constructor will get invoked only in case of persistent region when it
* is recovering an oplog.
*
* @param oplogId
* @param parent
*/
Oplog(long oplogId, PersistentOplogSet parent) {
// @todo have the crf and drf use different directories.
if (oplogId > DiskId.MAX_OPLOG_ID) {
throw new IllegalStateException("Too many oplogs. The oplog id can not exceed " + DiskId.MAX_OPLOG_ID);
}
this.isRecovering = true;
this.oplogId = oplogId;
this.parent = parent.getParent();
this.oplogSet = parent;
this.opState = new OpState();
long maxOplogSizeParam = getParent().getMaxOplogSizeInBytes();
this.maxOplogSize = maxOplogSizeParam;
setMaxCrfDrfSize();
this.stats = getParent().getStats();
this.compactOplogs = getParent().getAutoCompact();
this.closed = true;
this.crf.RAFClosed = true;
this.deleted.set(true);
this.haveRecoveredCrf = false;
this.haveRecoveredDrf = false;
}
/**
* Returns true if added file was crf; false if drf
*/
boolean addRecoveredFile(File f, DirectoryHolder dh) {
String fname = f.getName();
if (this.dirHolder != null) {
if (!dh.equals(this.dirHolder)) {
throw new DiskAccessException("Oplog#" + getOplogId() + " has files in two different directories: \"" + this.dirHolder
+ "\", and \"" + dh + "\". Both the crf and drf for this oplog should be in the same directory.", getParent());
}
} else {
this.dirHolder = dh;
}
if (fname.endsWith(Oplog.CRF_FILE_EXT)) {
this.crf.f = f;
return true;
} else if (fname.endsWith(Oplog.DRF_FILE_EXT)) {
this.drf.f = f;
// } else if (fname.endsWith(Oplog.KRF_FILE_EXT)) {
// this.krf.f = f;
} else {
assert false : fname;
}
return false;
}
void setRecoveredDrfSize(long size) {
this.drf.currSize += size;
this.drf.bytesFlushed += size;
}
void setRecoveredCrfSize(long size) {
this.crf.currSize += size;
this.crf.bytesFlushed += size;
}
private boolean isRecovering;
boolean isRecovering() {
return this.isRecovering;
}
private DiskStoreImpl getParent() {
return this.parent;
}
private PersistentOplogSet getOplogSet() {
return oplogSet;
}
void initAfterRecovery(boolean offline) {
this.isRecovering = false;
this.closed = false;
this.deleted.set(false);
String n = getParent().getName();
// crf might not exist; but drf always will
this.diskFile = new File(this.drf.f.getParentFile(), oplogSet.getPrefix() + n + "_" + this.oplogId);
try {
// This is a recovered oplog and we only read from its crf.
// No need to open the drf.
this.doneAppending = true;
if (this.crf.f != null && !hasNoLiveValues()) {
this.closed = false;
// truncate crf/drf if their actual size is less than their pre-blow
// size
this.crf.raf = new UninterruptibleRandomAccessFile(this.crf.f, "rw");
this.crf.RAFClosed = false;
this.crf.channel = this.crf.raf.getChannel();
unpreblow(this.crf, getMaxCrfSize());
this.crf.raf.close();
// make crf read only
this.crf.raf = new UninterruptibleRandomAccessFile(this.crf.f, "r");
this.crf.channel = this.crf.raf.getChannel();
this.stats.incOpenOplogs();
// drf.raf is null at this point. create one and close it to retain
// existing behavior
try {
this.drf.raf = new UninterruptibleRandomAccessFile(this.drf.f, "rw");
this.drf.RAFClosed = false;
this.drf.channel = this.drf.raf.getChannel();
unpreblow(this.drf, getMaxDrfSize());
} finally {
this.drf.raf.close();
this.drf.raf = null;
this.drf.RAFClosed = true;
}
// no need to seek to the end; we will not be writing to a recovered
// oplog; only reading
// this.crf.raf.seek(this.crf.currSize);
} else if (!offline) {
// drf exists but crf has been deleted (because it was empty).
// I don't think the drf needs to be opened. It is only used during
// recovery.
// At some point the compacter my identify that it can be deleted.
this.crf.RAFClosed = true;
deleteCRF();
this.closed = true;
this.deleted.set(true);
}
this.drf.RAFClosed = true; // since we never open it on a recovered oplog
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_CREATING_OPERATION_LOG_BECAUSE_0.toLocalizedString(ex),
getParent());
}
if (hasNoLiveValues() && !offline) {
getOplogSet().removeOplog(getOplogId(), true, getHasDeletes() ? this : null);
if (!getHasDeletes()) {
getOplogSet().drfDelete(this.oplogId);
deleteFile(this.drf);
}
} else if (needsCompaction()) {
// just leave it in the list it is already in
} else {
// remove it from the compactable list
getOplogSet().removeOplog(getOplogId(), true/*
* say we are deleting so that
* undeletedOplogSize is not
* inced
*/, null);
// add it to the inactive list
getOplogSet().addInactive(this);
}
}
boolean getHasDeletes() {
return this.hasDeletes.get();
}
private void setHasDeletes(boolean v) {
this.hasDeletes.set(v);
}
private void closeAndDeleteAfterEx(IOException ex, OplogFile olf) {
if (olf == null) {
return;
}
if (olf.raf != null) {
try {
olf.raf.close();
} catch (IOException e) {
logger.warn(LocalizedMessage.create(LocalizedStrings.Oplog_Close_Failed, olf.f.getAbsolutePath()), e);
}
}
olf.RAFClosed = true;
if (!olf.f.delete() && olf.f.exists()) {
throw new DiskAccessException(LocalizedStrings.Oplog_COULD_NOT_DELETE__0_.toLocalizedString(olf.f.getAbsolutePath()), ex,
getParent());
}
}
private void preblow(OplogFile olf, long maxSize) throws IOException {
long availableSpace = this.dirHolder.getAvailableSpace();
if (availableSpace >= maxSize) {
try {
NativeCalls.getInstance().preBlow(olf.f.getAbsolutePath(), maxSize,
(DiskStoreImpl.PREALLOCATE_OPLOGS && !DiskStoreImpl.SET_IGNORE_PREALLOCATE));
} catch (IOException ioe) {
if (logger.isDebugEnabled()) {
logger.debug("Could not pregrow oplog to {} because: {}", maxSize, ioe.getMessage(), ioe);
}
// I don't think I need any of this. If setLength throws then
// the file is still ok.
// I need this on windows. I'm seeing this in testPreblowErrorCondition:
// Caused by: java.io.IOException: The parameter is incorrect
// at sun.nio.ch.FileDispatcher.write0(Native Method)
// at sun.nio.ch.FileDispatcher.write(FileDispatcher.java:44)
// at sun.nio.ch.IOUtil.writeFromNativeBuffer(IOUtil.java:104)
// at sun.nio.ch.IOUtil.write(IOUtil.java:60)
// at sun.nio.ch.FileChannelImpl.write(FileChannelImpl.java:206)
// at com.gemstone.gemfire.internal.cache.Oplog.flush(Oplog.java:3377)
// at
// com.gemstone.gemfire.internal.cache.Oplog.flushAll(Oplog.java:3419)
/*
* { String os = System.getProperty("os.name"); if (os != null) { if
* (os.indexOf("Windows") != -1) { olf.raf.close(); olf.RAFClosed =
* true; if (!olf.f.delete() && olf.f.exists()) { throw new
* DiskAccessException
* (LocalizedStrings.Oplog_COULD_NOT_DELETE__0_.toLocalizedString
* (olf.f.getAbsolutePath()), getParent()); } olf.raf = new
* RandomAccessFile(olf.f, SYNC_WRITES ? "rwd" : "rw"); olf.RAFClosed =
* false; } } }
*/
closeAndDeleteAfterEx(ioe, olf);
throw new InsufficientDiskSpaceException(LocalizedStrings.Oplog_PreAllocate_Failure.toLocalizedString(olf.f
.getAbsolutePath(), maxSize), ioe, getParent());
}
}
// TODO: Perhaps the test flag is not requierd here. Will re-visit.
else if (DiskStoreImpl.PREALLOCATE_OPLOGS && !DiskStoreImpl.SET_IGNORE_PREALLOCATE) {
throw new InsufficientDiskSpaceException(LocalizedStrings.Oplog_PreAllocate_Failure.toLocalizedString(
olf.f.getAbsolutePath(), maxSize), new IOException("not enough space left to pre-blow, available=" + availableSpace
+ ", required=" + maxSize), getParent());
}
}
private void unpreblow(OplogFile olf, long maxSize) {
synchronized (/* olf */this.lock) {
if (!olf.RAFClosed && !olf.unpreblown) {
olf.unpreblown = true;
if (olf.currSize < maxSize) {
try {
olf.raf.setLength(olf.currSize);
} catch (IOException ignore) {
}
}
}
}
}
/**
* Creates the crf oplog file
*
* @throws IOException
*/
private void createCrf(OplogFile prevOlf) throws IOException {
File f = new File(this.diskFile.getPath() + CRF_FILE_EXT);
if (logger.isDebugEnabled()) {
logger.debug("Creating operation log file {}", f);
}
this.crf.f = f;
preblow(this.crf, getMaxCrfSize());
this.crf.raf = new UninterruptibleRandomAccessFile(f, SYNC_WRITES ? "rwd" : "rw");
this.crf.RAFClosed = false;
oplogSet.crfCreate(this.oplogId);
this.crf.writeBuf = allocateWriteBuf(prevOlf);
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_CREATE_0_1_2, new Object[] { toString(), getFileType(this.crf),
getParent().getName() }));
this.crf.channel = this.crf.raf.getChannel();
this.stats.incOpenOplogs();
writeDiskStoreRecord(this.crf, OPLOG_TYPE.CRF);
writeGemfireVersionRecord(this.crf);
writeRVVRecord(this.crf, false);
// Fix for bug 41654 - don't count the header
// size against the size of the oplog. This ensures that
// even if we have a large RVV, we can still write up to
// max-oplog-size bytes to this oplog.
this.maxCrfSize += this.crf.currSize;
}
private static ByteBuffer allocateWriteBuf(OplogFile prevOlf) {
if (prevOlf != null && prevOlf.writeBuf != null) {
ByteBuffer result = prevOlf.writeBuf;
prevOlf.writeBuf = null;
return result;
} else {
return ByteBuffer.allocateDirect(Integer.getInteger("WRITE_BUF_SIZE", 32768).intValue());
}
}
/**
* Creates the drf oplog file
*
* @throws IOException
*/
private void createDrf(OplogFile prevOlf) throws IOException {
File f = new File(this.diskFile.getPath() + DRF_FILE_EXT);
this.drf.f = f;
if (logger.isDebugEnabled()) {
logger.debug("Creating operation log file {}", f);
}
preblow(this.drf, getMaxDrfSize());
this.drf.raf = new UninterruptibleRandomAccessFile(f, SYNC_WRITES ? "rwd" : "rw");
this.drf.RAFClosed = false;
this.oplogSet.drfCreate(this.oplogId);
this.drf.writeBuf = allocateWriteBuf(prevOlf);
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_CREATE_0_1_2, new Object[] { toString(), getFileType(this.drf),
getParent().getName() }));
this.drf.channel = this.drf.raf.getChannel();
writeDiskStoreRecord(this.drf, OPLOG_TYPE.DRF);
writeGemfireVersionRecord(this.drf);
writeRVVRecord(this.drf, true);
}
/**
* Returns the <code>DiskStoreStats</code> for this oplog
*/
public DiskStoreStats getStats() {
return this.stats;
}
/**
* Flushes any pending writes to disk.
*
* public final void flush() { forceFlush(); }
*/
/**
* Test Method to be used only for testing purposes. Gets the underlying File
* object for the Oplog . Oplog class uses this File object to obtain the
* RandomAccessFile object. Before returning the File object , the dat present
* in the buffers of the RandomAccessFile object is flushed. Otherwise, for
* windows the actual file length does not match with the File size obtained
* from the File object
*
* @throws IOException
* @throws SyncFailedException
*/
File getOplogFile() throws SyncFailedException, IOException {
// @todo check callers for drf
synchronized (this.lock/* crf */) {
if (!this.crf.RAFClosed) {
this.crf.raf.getFD().sync();
}
return this.crf.f;
}
}
/**
* Given a set of Oplog file names return a Set of the oplog files that match
* those names that are managed by this Oplog.
*
* @param oplogFileNames
* a Set of operation log file names.
*/
Set<String> gatherMatchingOplogFiles(Set<String> oplogFileNames) {
Set<String> matchingFiles = new HashSet<String>();
// CRF match?
if ((null != this.crf.f) && this.crf.f.exists() && oplogFileNames.contains(this.crf.f.getName())) {
matchingFiles.add(this.crf.f.getName());
}
// DRF match?
if ((null != this.drf.f) && this.drf.f.exists() && oplogFileNames.contains(this.drf.f.getName())) {
matchingFiles.add(this.drf.f.getName());
}
// KRF match?
if (getParent().getDiskInitFile().hasKrf(this.oplogId)) {
File krfFile = getKrfFile();
if (krfFile.exists() && oplogFileNames.contains(krfFile.getName())) {
matchingFiles.add(krfFile.getName());
}
}
return matchingFiles;
}
/**
* Returns a map of baseline oplog files to copy that match this oplog's files
* for a currently running backup.
*
* @param baselineOplogFiles
* a List of files to match this oplog's filenames against.
* @return a map of baslineline oplog files to copy. May be empty if total
* current set for this oplog does not match the baseline.
*/
Map<File, File> mapBaseline(List<File> baselineOplogFiles) {
// Map of baseline oplog file name to oplog file
Map<String, File> baselineOplogMap = TransformUtils.transformAndMap(baselineOplogFiles, TransformUtils.fileNameTransformer);
// Returned Map of baseline file to current oplog file
Map<File, File> baselineToOplogMap = new HashMap<File, File>();
// Check for crf existence
if ((null != this.crf.f) && this.crf.f.exists() && baselineOplogMap.containsKey(this.crf.f.getName())) {
baselineToOplogMap
.put(baselineOplogMap.get(this.crf.f.getName()), IOUtils.tryGetCanonicalFileElseGetAbsoluteFile(this.crf.f));
}
// Check for drf existence
if ((null != this.drf.f) && this.drf.f.exists() && baselineOplogMap.containsKey(this.drf.f.getName())) {
baselineToOplogMap
.put(baselineOplogMap.get(this.drf.f.getName()), IOUtils.tryGetCanonicalFileElseGetAbsoluteFile(this.drf.f));
}
// Check for krf existence
if (getParent().getDiskInitFile().hasKrf(this.oplogId)) {
File krfFile = getKrfFile();
if (krfFile.exists() && baselineOplogMap.containsKey(krfFile.getName())) {
baselineToOplogMap.put(baselineOplogMap.get(krfFile.getName()), IOUtils.tryGetCanonicalFileElseGetAbsoluteFile(krfFile));
}
}
return baselineToOplogMap;
}
/** the oplog identifier * */
public long getOplogId() {
return this.oplogId;
}
/**
* Returns the unserialized bytes and bits for the given Entry. If Oplog is
* destroyed while querying, then the DiskRegion is queried again to obatin
* the value This method should never get invoked for an entry which has been
* destroyed
*
* @since 3.2.1
* @param id
* The DiskId for the entry @param offset The offset in this OpLog
* where the entry is present. @param faultingIn @param bitOnly
* boolean indicating whether to extract just the UserBit or UserBit
* with value @return BytesAndBits object wrapping the value & user
* bit
*/
public final BytesAndBits getBytesAndBits(DiskRegionView dr, DiskId id, boolean faultingIn, boolean bitOnly) {
Oplog retryOplog = null;
long offset = 0;
synchronized (id) {
long opId = id.getOplogId();
if (opId != getOplogId()) {
// the oplog changed on us so we need to do a recursive
// call after unsyncing
retryOplog = getOplogSet().getChild(opId);
} else {
// fetch this while synced so it will be consistent with oplogId
offset = id.getOffsetInOplog();
}
}
if (retryOplog != null) {
return retryOplog.getBytesAndBits(dr, id, faultingIn, bitOnly);
}
BytesAndBits bb = null;
long start = this.stats.startRead();
// Asif: If the offset happens to be -1, still it is possible that
// the data is present in the current oplog file.
if (offset == -1) {
// Asif: Since it is given that a get operation has alreadty
// taken a
// lock on an entry , no put operation could have modified the
// oplog ID
// there fore synchronization is not needed
// synchronized (id) {
// if (id.getOplogId() == this.oplogId) {
offset = id.getOffsetInOplog();
// }
// }
}
// Asif :If the current OpLog is not destroyed ( its opLogRaf file
// is still open) we can retrieve the value from this oplog.
try {
bb = basicGet(dr, offset, bitOnly, id.getValueLength(), id.getUserBits());
} catch (DiskAccessException dae) {
logger.error(LocalizedMessage.create(
LocalizedStrings.Oplog_OPLOGBASICGET_ERROR_IN_READING_THE_DATA_FROM_DISK_FOR_DISK_ID_HAVING_DATA_AS_0, id), dae);
throw dae;
}
if (bb == null) {
throw new EntryDestroyedException(
LocalizedStrings.Oplog_NO_VALUE_WAS_FOUND_FOR_ENTRY_WITH_DISK_ID_0_ON_A_REGION_WITH_SYNCHRONOUS_WRITING_SET_TO_1
.toLocalizedString(new Object[] { id, Boolean.valueOf(dr.isSync()) }));
}
if (bitOnly) {
dr.endRead(start, this.stats.endRead(start, 1), 1);
} else {
dr.endRead(start, this.stats.endRead(start, bb.getBytes().length), bb.getBytes().length);
}
return bb;
}
/**
* Returns the object stored on disk with the given id. This method is used
* for testing purposes only. As such, it bypasses the buffer and goes
* directly to the disk. This is not a thread safe function , in the sense, it
* is possible that by the time the OpLog is queried , data might move HTree
* with the oplog being destroyed
*
* @param id
* A DiskId object for which the value on disk will be fetched
*
*/
public final BytesAndBits getNoBuffer(DiskRegion dr, DiskId id) {
if (logger.isDebugEnabled()) {
logger.debug("Oplog::getNoBuffer:Before invoking Oplog.basicGet for DiskID ={}", id);
}
try {
BytesAndBits bb = basicGet(dr, id.getOffsetInOplog(), false, id.getValueLength(), id.getUserBits());
return bb;
} catch (DiskAccessException dae) {
logger.error(LocalizedMessage.create(
LocalizedStrings.Oplog_OPLOGGETNOBUFFEREXCEPTION_IN_RETRIEVING_VALUE_FROM_DISK_FOR_DISKID_0, id), dae);
throw dae;
} catch (IllegalStateException ise) {
logger.error(LocalizedMessage.create(
LocalizedStrings.Oplog_OPLOGGETNOBUFFEREXCEPTION_IN_RETRIEVING_VALUE_FROM_DISK_FOR_DISKID_0, id), ise);
throw ise;
}
}
void close(DiskRegion dr) {
// while a krf is being created can not close a region
lockCompactor();
try {
addUnrecoveredRegion(dr.getId());
DiskRegionInfo dri = getDRI(dr);
if (dri != null) {
long clearCount = dri.clear(null);
if (clearCount != 0) {
this.totalLiveCount.addAndGet(-clearCount);
// no need to call handleNoLiveValues because we now have an
// unrecovered region.
}
this.regionMap.remove(dr.getId(), dri);
}
} finally {
unlockCompactor();
}
}
void clear(DiskRegion dr, RegionVersionVector rvv) {
DiskRegionInfo dri = getDRI(dr);
if (dri != null) {
long clearCount = dri.clear(rvv);
if (clearCount != 0) {
this.totalLiveCount.addAndGet(-clearCount);
if (!isCompacting() || calledByCompactorThread()) {
handleNoLiveValues();
}
}
}
}
void destroy(DiskRegion dr) {
DiskRegionInfo dri = getDRI(dr);
if (dri != null) {
long clearCount = dri.clear(null);
if (clearCount != 0) {
this.totalLiveCount.addAndGet(-clearCount);
if (!isCompacting() || calledByCompactorThread()) {
handleNoLiveValues();
}
}
this.regionMap.remove(dr.getId(), dri);
}
}
long getMaxRecoveredOplogEntryId() {
long result = this.recoverNewEntryId;
if (this.recoverModEntryIdHWM > result) {
result = this.recoverModEntryIdHWM;
}
if (this.recoverDelEntryIdHWM > result) {
result = this.recoverDelEntryIdHWM;
}
return result;
}
/**
* Used during recovery to calculate the OplogEntryId of the next NEW_ENTRY
* record.
*
* @since prPersistSprint1
*/
private long recoverNewEntryId = DiskStoreImpl.INVALID_ID;
/**
* Used during writing to remember the last MOD_ENTRY OplogEntryId written to
* this oplog.
*
* @since prPersistSprint1
*/
private long writeModEntryId = DiskStoreImpl.INVALID_ID;
/**
* Used during recovery to calculate the OplogEntryId of the next MOD_ENTRY
* record.
*
* @since prPersistSprint1
*/
private long recoverModEntryId = DiskStoreImpl.INVALID_ID;
/**
* Added to fix bug 41301. High water mark of modified entries.
*/
private long recoverModEntryIdHWM = DiskStoreImpl.INVALID_ID;
/**
* Added to fix bug 41340. High water mark of deleted entries.
*/
private long recoverDelEntryIdHWM = DiskStoreImpl.INVALID_ID;
/**
* Used during writing to remember the last DEL_ENTRY OplogEntryId written to
* this oplog.
*
* @since prPersistSprint1
*/
private long writeDelEntryId = DiskStoreImpl.INVALID_ID;
/**
* Used during recovery to calculate the OplogEntryId of the next DEL_ENTRY
* record.
*
* @since prPersistSprint1
*/
private long recoverDelEntryId = DiskStoreImpl.INVALID_ID;
private void setRecoverNewEntryId(long v) {
this.recoverNewEntryId = v;
}
private long incRecoverNewEntryId() {
this.recoverNewEntryId += 1;
return this.recoverNewEntryId;
}
/**
* Given a delta calculate the OplogEntryId for a MOD_ENTRY.
*/
public long calcModEntryId(long delta) {
long oplogKeyId = this.recoverModEntryId + delta;
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "calcModEntryId delta={} recoverModEntryId={} oplogKeyId={}", delta,
this.recoverModEntryId, oplogKeyId);
}
this.recoverModEntryId = oplogKeyId;
if (oplogKeyId > this.recoverModEntryIdHWM) {
this.recoverModEntryIdHWM = oplogKeyId; // fixes bug 41301
}
return oplogKeyId;
}
/**
* Given a delta calculate the OplogEntryId for a DEL_ENTRY.
*/
public long calcDelEntryId(long delta) {
long oplogKeyId = this.recoverDelEntryId + delta;
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "calcDelEntryId delta={} recoverModEntryId={} oplogKeyId={}", delta,
this.recoverModEntryId, oplogKeyId);
}
this.recoverDelEntryId = oplogKeyId;
if (oplogKeyId > this.recoverDelEntryIdHWM) {
this.recoverDelEntryIdHWM = oplogKeyId; // fixes bug 41340
}
return oplogKeyId;
}
private boolean crashed;
boolean isCrashed() {
return this.crashed;
}
/**
* Return bytes read.
*/
long recoverDrf(OplogEntryIdSet deletedIds, boolean alreadyRecoveredOnce, boolean latestOplog) {
File drfFile = this.drf.f;
if (drfFile == null) {
this.haveRecoveredDrf = true;
return 0L;
}
lockCompactor();
try {
if (this.haveRecoveredDrf && !getHasDeletes())
return 0L; // do this while holding lock
if (!this.haveRecoveredDrf) {
this.haveRecoveredDrf = true;
}
logger.info(LocalizedMessage.create(LocalizedStrings.DiskRegion_RECOVERING_OPLOG_0_1_2, new Object[] { toString(),
drfFile.getAbsolutePath(), getParent().getName() }));
this.recoverDelEntryId = DiskStoreImpl.INVALID_ID;
boolean readLastRecord = true;
CountingDataInputStream dis = null;
try {
int recordCount = 0;
boolean foundDiskStoreRecord = false;
FileInputStream fis = null;
try {
fis = new FileInputStream(drfFile);
dis = new CountingDataInputStream(new BufferedInputStream(fis, 32 * 1024), drfFile.length());
boolean endOfLog = false;
while (!endOfLog) {
if (dis.atEndOfFile()) {
endOfLog = true;
break;
}
readLastRecord = false;
byte opCode = dis.readByte();
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "drf byte={} location={}", opCode, Long.toHexString(dis.getCount()));
}
switch (opCode) {
case OPLOG_EOF_ID:
// we are at the end of the oplog. So we need to back up one byte
dis.decrementCount();
endOfLog = true;
break;
case OPLOG_DEL_ENTRY_1ID:
case OPLOG_DEL_ENTRY_2ID:
case OPLOG_DEL_ENTRY_3ID:
case OPLOG_DEL_ENTRY_4ID:
case OPLOG_DEL_ENTRY_5ID:
case OPLOG_DEL_ENTRY_6ID:
case OPLOG_DEL_ENTRY_7ID:
case OPLOG_DEL_ENTRY_8ID:
readDelEntry(dis, opCode, deletedIds, parent);
recordCount++;
break;
case OPLOG_DISK_STORE_ID:
readDiskStoreRecord(dis, this.drf.f);
foundDiskStoreRecord = true;
recordCount++;
break;
case OPLOG_MAGIC_SEQ_ID:
readOplogMagicSeqRecord(dis, this.drf.f, OPLOG_TYPE.DRF);
break;
case OPLOG_GEMFIRE_VERSION:
readGemfireVersionRecord(dis, this.drf.f);
recordCount++;
break;
case OPLOG_RVV:
long idx = dis.getCount();
readRVVRecord(dis, this.drf.f, true, latestOplog);
recordCount++;
break;
default:
throw new DiskAccessException(LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG
.toLocalizedString(opCode), getParent());
}
readLastRecord = true;
// @todo
// if (rgn.isDestroyed()) {
// break;
// }
} // while
} finally {
if (dis != null) {
dis.close();
}
if (fis != null) {
fis.close();
}
}
if (!foundDiskStoreRecord && recordCount > 0) {
throw new DiskAccessException("The oplog file \"" + this.drf.f + "\" does not belong to the init file \""
+ getParent().getInitFile() + "\". Drf did not contain a disk store id.", getParent());
}
} catch (EOFException ex) {
// ignore since a partial record write can be caused by a crash
// if (byteCount < fileLength) {
// throw new
// DiskAccessException(LocalizedStrings.Oplog_FAILED_READING_FILE_DURING_RECOVERY_FROM_0
// .toLocalizedString(drfFile.getPath()), ex, getParent());
// }// else do nothing, this is expected in crash scenarios
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_READING_FILE_DURING_RECOVERY_FROM_0.toLocalizedString(drfFile
.getPath()), ex, getParent());
} catch (CancelException ignore) {
if (logger.isDebugEnabled()) {
logger.debug("Oplog::readOplog:Error in recovery as Cache was closed", ignore);
}
} catch (RegionDestroyedException ignore) {
if (logger.isDebugEnabled()) {
logger.debug("Oplog::readOplog:Error in recovery as Region was destroyed", ignore);
}
} catch (IllegalStateException ex) {
// @todo
// if (!rgn.isClosed()) {
throw ex;
// }
}
// Add the Oplog size to the Directory Holder which owns this oplog,
// so that available space is correctly calculated & stats updated.
long byteCount = 0;
if (!readLastRecord) {
// this means that there was a crash
// and hence we should not continue to read
// the next oplog
this.crashed = true;
if (dis != null) {
byteCount = dis.getFileLength();
}
} else {
if (dis != null) {
byteCount = dis.getCount();
}
}
if (!alreadyRecoveredOnce) {
setRecoveredDrfSize(byteCount);
this.dirHolder.incrementTotalOplogSize(byteCount);
}
return byteCount;
} finally {
unlockCompactor();
}
}
/**
* This map is used during recovery to keep track of what entries were
* recovered. Its keys are the oplogEntryId; its values are the actual logical
* keys that end up in the Region's keys. It used to be a local variable in
* basicInitializeOwner but now that it needs to live longer than that method
* I made it an instance variable It is now only alive during
* recoverRegionsThatAreReady so it could once again be passed down into each
* oplog.
* <p>
* If offlineCompaction the value in this map will have the key bytes, values
* bytes, user bits, etc (any info we need to copy forward).
*/
private OplogEntryIdMap kvMap;
private OplogEntryIdMap getRecoveryMap() {
return this.kvMap;
}
/**
* This map is used during recover to keep track of keys that are skipped.
* Later modify records in the same oplog may use this map to retrieve the
* correct key.
*/
private OplogEntryIdMap skippedKeyBytes;
private boolean readKrf(OplogEntryIdSet deletedIds, boolean recoverValues, boolean recoverValuesSync,
Set<Oplog> oplogsNeedingValueRecovery, boolean latestOplog) {
File f = new File(this.diskFile.getPath() + KRF_FILE_EXT);
if (!f.exists()) {
return false;
}
if (!getParent().getDiskInitFile().hasKrf(this.oplogId)) {
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_REMOVING_INCOMPLETE_KRF, new Object[] { f.getName(), this.oplogId,
getParent().getName() }));
f.delete();
}
// Set krfCreated to true since we have a krf.
this.krfCreated.set(true);
// Fix for 42741 - we do this after creating setting the krfCreated flag
// so that we don't try to recreate the krf.
if (recoverValuesSync) {
return false;
}
FileInputStream fis;
try {
fis = new FileInputStream(f);
} catch (FileNotFoundException ex) {
return false;
}
try {
if (getParent().isOffline() && !getParent().FORCE_KRF_RECOVERY) {
return false;
}
logger.info(LocalizedMessage.create(LocalizedStrings.DiskRegion_RECOVERING_OPLOG_0_1_2, new Object[] { toString(),
f.getAbsolutePath(), getParent().getName() }));
this.recoverNewEntryId = DiskStoreImpl.INVALID_ID;
this.recoverModEntryId = DiskStoreImpl.INVALID_ID;
this.recoverModEntryIdHWM = DiskStoreImpl.INVALID_ID;
long oplogKeyIdHWM = DiskStoreImpl.INVALID_ID;
int krfEntryCount = 0;
DataInputStream dis = new DataInputStream(new BufferedInputStream(fis, 1024 * 1024));
final Version version = getProductVersionIfOld();
final ByteArrayDataInput in = new ByteArrayDataInput();
try {
try {
validateOpcode(dis, OPLOG_MAGIC_SEQ_ID);
readOplogMagicSeqRecord(dis, f, OPLOG_TYPE.KRF);
validateOpcode(dis, OPLOG_DISK_STORE_ID);
readDiskStoreRecord(dis, f);
} catch (DiskAccessException notInNewFormatErr) {
// Failed to read the file. There are two possibilities. Either this
// file is in old format which does not have a magic seq in the
// beginning or this is not a valid file at all. Try reading it as a
// file in old format
fis.close();
fis = new FileInputStream(f);
dis = new DataInputStream(new BufferedInputStream(fis, 1024 * 1024));
readDiskStoreRecord(dis, f);
} catch (IllegalStateException notOldFileErr) {
// Failed to read the file. There are two possibilities. Either this
// is in new format which has a magic seq in the beginning or this is
// not a valid file at all
fis.close();
fis = new FileInputStream(f);
dis = new DataInputStream(new BufferedInputStream(fis, 1024 * 1024));
readDiskStoreRecord(dis, f);
}
readGemfireVersionRecord(dis, f);
readTotalCountRecord(dis, f);
readRVVRecord(dis, f, false, latestOplog);
long lastOffset = 0;
byte[] keyBytes = DataSerializer.readByteArray(dis);
while (keyBytes != null) {
byte userBits = dis.readByte();
int valueLength = InternalDataSerializer.readArrayLength(dis);
byte[] valueBytes = null;
long drId = DiskInitFile.readDiskRegionID(dis);
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
// read version
VersionTag tag = null;
if (EntryBits.isWithVersions(userBits)) {
tag = readVersionsFromOplog(dis);
if (drs != null && !drs.getDiskRegionView().getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
// 50044 Remove version tag from entry if we don't want versioning
// for this region
tag = null;
userBits = EntryBits.setWithVersions(userBits, false);
} else {
// Update the RVV with the new entry
if (drs != null) {
drs.recordRecoveredVersionTag(tag);
}
}
}
long oplogKeyId = InternalDataSerializer.readVLOld(dis);
long oplogOffset;
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
oplogOffset = -1;
} else {
oplogOffset = lastOffset + InternalDataSerializer.readVLOld(dis);
lastOffset = oplogOffset;
}
if (oplogKeyId > oplogKeyIdHWM) {
oplogKeyIdHWM = oplogKeyId;
}
if (okToSkipModifyRecord(deletedIds, drId, drs, oplogKeyId, true, tag).skip()) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readNewEntry skipping oplogKeyId=<{}> drId={} userBits={} oplogOffset={} valueLen={}", oplogKeyId, drId, userBits,
oplogOffset, valueLength);
}
this.stats.incRecoveryRecordsSkipped();
incSkipped();
} else {
if (EntryBits.isAnyInvalid(userBits)) {
if (EntryBits.isInvalid(userBits)) {
valueBytes = DiskEntry.INVALID_BYTES;
} else {
valueBytes = DiskEntry.LOCAL_INVALID_BYTES;
}
} else if (EntryBits.isTombstone(userBits)) {
valueBytes = DiskEntry.TOMBSTONE_BYTES;
}
Object key = deserializeKey(keyBytes, version, in);
{
Object oldValue = getRecoveryMap().put(oplogKeyId, key);
if (oldValue != null) {
throw new AssertionError(LocalizedStrings.Oplog_DUPLICATE_CREATE.toLocalizedString(oplogKeyId));
}
}
DiskEntry de = drs.getDiskEntry(key);
if (de == null) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readNewEntry oplogKeyId=<{}> drId={} userBits={} oplogOffset={} valueLen={}", oplogKeyId, drId, userBits,
oplogOffset, valueLength);
}
DiskEntry.RecoveredEntry re = createRecoveredEntry(valueBytes, valueLength, userBits, getOplogId(), oplogOffset,
oplogKeyId, false, version, in);
if (tag != null) {
re.setVersionTag(tag);
}
initRecoveredEntry(drs.getDiskRegionView(), drs.initializeRecoveredEntry(key, re));
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
krfEntryCount++;
} else {
DiskId curdid = de.getDiskId();
// assert curdid.getOplogId() != getOplogId();
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"ignore readNewEntry because getOplogId()={} != curdid.getOplogId()={} for drId={} key={}", getOplogId(), curdid
.getOplogId(), drId, key);
}
}
}
keyBytes = DataSerializer.readByteArray(dis);
} // while
setRecoverNewEntryId(oplogKeyIdHWM);
} catch (IOException ex) {
try {
fis.close();
fis = null;
} catch (IOException ignore) {
}
throw new DiskAccessException("Unable to recover from krf file for oplogId=" + oplogId + ", file=" + f.getName()
+ ". This file is corrupt, but may be safely deleted.", ex, getParent());
}
if (recoverValues && krfEntryCount > 0) {
oplogsNeedingValueRecovery.add(this);
// TODO optimize this code and make it async
// It should also honor the lru limit
// The fault in logic might not work until
// the region is actually created.
// Instead of reading the crf it might be better to iterate the live
// entry
// list that was built during KRF recovery. Just fault values in until
// we
// hit the LRU limit (if we have one). Only fault in values for entries
// recovered from disk that are still in this oplog.
// Defer faulting in values until all oplogs for the ds have been
// recovered.
}
} finally {
// fix for bug 42776
if (fis != null) {
try {
fis.close();
fis = null;
} catch (IOException ignore) {
}
}
}
return true;
}
private void validateOpcode(DataInputStream dis, byte expect) throws IOException {
byte opCode = dis.readByte();
if (opCode != expect) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "expected opcode id absent: {}", expect);
}
throw new IllegalStateException();
}
}
/**
* Return number of bytes read
*/
private long readCrf(OplogEntryIdSet deletedIds, boolean recoverValues, boolean latestOplog) {
this.recoverNewEntryId = DiskStoreImpl.INVALID_ID;
this.recoverModEntryId = DiskStoreImpl.INVALID_ID;
this.recoverModEntryIdHWM = DiskStoreImpl.INVALID_ID;
boolean readLastRecord = true;
CountingDataInputStream dis = null;
try {
final LocalRegion currentRegion = LocalRegion.getInitializingRegion();
final boolean keyRequiresRegionContext = currentRegion != null ? currentRegion.keyRequiresRegionContext() : false;
final Version version = getProductVersionIfOld();
final ByteArrayDataInput in = new ByteArrayDataInput();
final HeapDataOutputStream hdos = new HeapDataOutputStream(Version.CURRENT);
int recordCount = 0;
boolean foundDiskStoreRecord = false;
FileInputStream fis = null;
try {
fis = new FileInputStream(this.crf.f);
dis = new CountingDataInputStream(new BufferedInputStream(fis, 1024 * 1024), this.crf.f.length());
boolean endOfLog = false;
while (!endOfLog) {
// long startPosition = byteCount;
if (dis.atEndOfFile()) {
endOfLog = true;
break;
}
readLastRecord = false;
byte opCode = dis.readByte();
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "Oplog opCode={}", opCode);
}
switch (opCode) {
case OPLOG_EOF_ID:
// we are at the end of the oplog. So we need to back up one byte
dis.decrementCount();
endOfLog = true;
break;
case OPLOG_CONFLICT_VERSION:
this.readVersionTagOnlyEntry(dis, opCode);
break;
case OPLOG_NEW_ENTRY_BASE_ID: {
long newEntryBase = dis.readLong();
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "newEntryBase={}", newEntryBase);
}
readEndOfRecord(dis);
setRecoverNewEntryId(newEntryBase);
recordCount++;
}
break;
case OPLOG_NEW_ENTRY_0ID:
readNewEntry(dis, opCode, deletedIds, recoverValues, currentRegion, keyRequiresRegionContext, version, in, hdos);
recordCount++;
break;
case OPLOG_MOD_ENTRY_1ID:
case OPLOG_MOD_ENTRY_2ID:
case OPLOG_MOD_ENTRY_3ID:
case OPLOG_MOD_ENTRY_4ID:
case OPLOG_MOD_ENTRY_5ID:
case OPLOG_MOD_ENTRY_6ID:
case OPLOG_MOD_ENTRY_7ID:
case OPLOG_MOD_ENTRY_8ID:
readModifyEntry(dis, opCode, deletedIds, recoverValues, currentRegion, keyRequiresRegionContext, version, in, hdos);
recordCount++;
break;
case OPLOG_MOD_ENTRY_WITH_KEY_1ID:
case OPLOG_MOD_ENTRY_WITH_KEY_2ID:
case OPLOG_MOD_ENTRY_WITH_KEY_3ID:
case OPLOG_MOD_ENTRY_WITH_KEY_4ID:
case OPLOG_MOD_ENTRY_WITH_KEY_5ID:
case OPLOG_MOD_ENTRY_WITH_KEY_6ID:
case OPLOG_MOD_ENTRY_WITH_KEY_7ID:
case OPLOG_MOD_ENTRY_WITH_KEY_8ID:
readModifyEntryWithKey(dis, opCode, deletedIds, recoverValues, currentRegion, keyRequiresRegionContext, version, in,
hdos);
recordCount++;
break;
case OPLOG_DISK_STORE_ID:
readDiskStoreRecord(dis, this.crf.f);
foundDiskStoreRecord = true;
recordCount++;
break;
case OPLOG_MAGIC_SEQ_ID:
readOplogMagicSeqRecord(dis, this.crf.f, OPLOG_TYPE.CRF);
break;
case OPLOG_GEMFIRE_VERSION:
readGemfireVersionRecord(dis, this.crf.f);
recordCount++;
break;
case OPLOG_RVV:
readRVVRecord(dis, this.drf.f, false, latestOplog);
recordCount++;
break;
default:
throw new DiskAccessException(LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG
.toLocalizedString(opCode), getParent());
}
readLastRecord = true;
// @todo
// if (rgn.isDestroyed()) {
// break;
// }
} // while
} finally {
if (dis != null) {
dis.close();
}
if (fis != null) {
fis.close();
}
}
if (!foundDiskStoreRecord && recordCount > 0) {
throw new DiskAccessException("The oplog file \"" + this.crf.f + "\" does not belong to the init file \""
+ getParent().getInitFile() + "\". Crf did not contain a disk store id.", getParent());
}
} catch (EOFException ex) {
// ignore since a partial record write can be caused by a crash
// if (byteCount < fileLength) {
// throw new
// DiskAccessException(LocalizedStrings.Oplog_FAILED_READING_FILE_DURING_RECOVERY_FROM_0
// .toLocalizedString(this.crf.f.getPath()), ex, getParent());
// }// else do nothing, this is expected in crash scenarios
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_READING_FILE_DURING_RECOVERY_FROM_0.toLocalizedString(this.crf.f
.getPath()), ex, getParent());
} catch (CancelException ignore) {
if (logger.isDebugEnabled()) {
logger.debug("Oplog::readOplog:Error in recovery as Cache was closed", ignore);
}
} catch (RegionDestroyedException ignore) {
if (logger.isDebugEnabled()) {
logger.debug("Oplog::readOplog:Error in recovery as Region was destroyed", ignore);
}
} catch (IllegalStateException ex) {
// @todo
// if (!rgn.isClosed()) {
throw ex;
// }
}
// Add the Oplog size to the Directory Holder which owns this oplog,
// so that available space is correctly calculated & stats updated.
long byteCount = 0;
if (!readLastRecord) {
// this means that there was a crash
// and hence we should not continue to read
// the next oplog
this.crashed = true;
if (dis != null) {
byteCount = dis.getFileLength();
}
} else {
if (dis != null) {
byteCount = dis.getCount();
}
}
return byteCount;
}
/**
* @throws DiskAccessException
* if this file does not belong to our parent
*/
private void readDiskStoreRecord(DataInput dis, File f) throws IOException {
long leastSigBits = dis.readLong();
long mostSigBits = dis.readLong();
DiskStoreID readDSID = new DiskStoreID(mostSigBits, leastSigBits);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "diskStoreId={}", readDSID);
}
readEndOfRecord(dis);
DiskStoreID dsid = getParent().getDiskStoreID();
if (!readDSID.equals(dsid)) {
throw new DiskAccessException("The oplog file \"" + f + "\" does not belong to the init file \"" + getParent().getInitFile()
+ "\".", getParent());
}
}
/*
* Reads and validates magic sequence in oplog header. For existing files this
* will not exist. This method will throw a DiskAccessException in that case
* too.
*/
private void readOplogMagicSeqRecord(DataInput dis, File f, OPLOG_TYPE type) throws IOException {
byte[] seq = new byte[OPLOG_TYPE.getLen()];
dis.readFully(seq);
for (int i = 0; i < OPLOG_TYPE.getLen(); i++) {
if (seq[i] != type.getBytes()[i]) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "oplog magic code mismatched at byte:{}, value:{}", (i + 1), seq[i]);
}
throw new DiskAccessException("Invalid oplog (" + type.name() + ") file provided: " + f, getParent());
}
}
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
StringBuffer sb = new StringBuffer();
for (int i = 0; i < OPLOG_TYPE.getLen(); i++) {
sb.append(" " + seq[i]);
}
logger.trace(LogMarker.PERSIST_RECOVERY, "oplog magic code: {}", sb);
}
readEndOfRecord(dis);
}
/**
* @throws DiskAccessException
* if this file does not belong to our parent
*/
private void readGemfireVersionRecord(DataInput dis, File f) throws IOException {
Version recoveredGFVersion = readProductVersionRecord(dis, f);
final boolean hasDataVersion;
if ((hasDataVersion = (recoveredGFVersion == Version.TOKEN))) {
// actual GFE version will be the next record in this case
byte opCode = dis.readByte();
if (opCode != OPLOG_GEMFIRE_VERSION) {
throw new DiskAccessException(
LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG.toLocalizedString(opCode), getParent());
}
recoveredGFVersion = readProductVersionRecord(dis, f);
}
if (this.gfversion == null) {
this.gfversion = recoveredGFVersion;
} else {
assert this.gfversion == recoveredGFVersion;
}
if (hasDataVersion) {
byte opCode = dis.readByte();
if (opCode != OPLOG_GEMFIRE_VERSION) {
throw new DiskAccessException(
LocalizedStrings.Oplog_UNKNOWN_OPCODE_0_FOUND_IN_DISK_OPERATION_LOG.toLocalizedString(opCode), getParent());
}
recoveredGFVersion = readProductVersionRecord(dis, f);
if (this.dataVersion == null) {
this.dataVersion = recoveredGFVersion;
} else {
assert this.dataVersion == recoveredGFVersion;
}
}
}
private Version readProductVersionRecord(DataInput dis, File f) throws IOException {
Version recoveredGFVersion;
short ver = Version.readOrdinal(dis);
try {
recoveredGFVersion = Version.fromOrdinal(ver, false);
} catch (UnsupportedVersionException e) {
throw new DiskAccessException(LocalizedStrings.Oplog_UNEXPECTED_PRODUCT_VERSION_0.toLocalizedString(ver), e, getParent());
}
logger.trace(LogMarker.PERSIST_RECOVERY, "version={}", recoveredGFVersion);
readEndOfRecord(dis);
return recoveredGFVersion;
}
private void readTotalCountRecord(DataInput dis, File f) throws IOException {
long recoveredCount = InternalDataSerializer.readUnsignedVL(dis);
this.totalCount.set(recoveredCount);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "totalCount={}", totalCount);
}
readEndOfRecord(dis);
}
private void readRVVRecord(DataInput dis, File f, boolean gcRVV, boolean latestOplog) throws IOException {
final boolean isPersistRecoveryDebugEnabled = logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY);
long numRegions = InternalDataSerializer.readUnsignedVL(dis);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readRVV entry numRegions={}", numRegions);
}
for (int region = 0; region < numRegions; region++) {
long drId = InternalDataSerializer.readUnsignedVL(dis);
// Get the drs. This may be null if this region is not currently
// recovering
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readRVV drId={} region={}", drId, drs);
}
if (gcRVV) {
// Read the GCC RV
long rvvSize = InternalDataSerializer.readUnsignedVL(dis);
for (int memberNum = 0; memberNum < rvvSize; memberNum++) {
// for each member, read the member id and version
long memberId = InternalDataSerializer.readUnsignedVL(dis);
long gcVersion = InternalDataSerializer.readUnsignedVL(dis);
// if we have a recovery store, add the recovered regions
if (drs != null) {
Object member = getParent().getDiskInitFile().getCanonicalObject((int) memberId);
drs.recordRecoveredGCVersion((VersionSource) member, gcVersion);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "adding gcRVV entry drId={}, member={}, version={}", drId, memberId, gcVersion);
}
} else {
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "skipping gcRVV entry drId={}, member={}, version={}", drId, memberId,
gcVersion);
}
}
}
} else {
boolean rvvTrusted = InternalDataSerializer.readBoolean(dis);
if (drs != null) {
if (latestOplog) {
// only set rvvtrust based on the newest oplog recovered
drs.setRVVTrusted(rvvTrusted);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "marking RVV trusted drId={},tvvTrusted={}", drId, rvvTrusted);
}
}
}
// Read a regular RVV
long rvvSize = InternalDataSerializer.readUnsignedVL(dis);
for (int memberNum = 0; memberNum < rvvSize; memberNum++) {
// for each member, read the member id and version
long memberId = InternalDataSerializer.readUnsignedVL(dis);
RegionVersionHolder versionHolder = new RegionVersionHolder(dis);
if (drs != null) {
Object member = getParent().getDiskInitFile().getCanonicalObject((int) memberId);
drs.recordRecoveredVersonHolder((VersionSource) member, versionHolder, latestOplog);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"adding RVV entry drId={},member={},versionHolder={},latestOplog={},oplogId={}", drId, memberId, versionHolder,
latestOplog, getOplogId());
}
} else {
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "skipping RVV entry drId={}, member={}, versionHolder={}", drId, memberId,
versionHolder);
}
}
}
}
}
readEndOfRecord(dis);
}
/**
* Recovers one oplog
*
* @param latestOplog
* - true if this oplog is the latest oplog in the disk store.
*/
long recoverCrf(OplogEntryIdSet deletedIds, boolean recoverValues, boolean recoverValuesSync, boolean alreadyRecoveredOnce,
Set<Oplog> oplogsNeedingValueRecovery, boolean latestOplog) {
// crf might not exist; but drf always will
this.diskFile = new File(this.drf.f.getParentFile(), oplogSet.getPrefix() + getParent().getName() + "_" + this.oplogId);
File crfFile = this.crf.f;
if (crfFile == null) {
this.haveRecoveredCrf = true;
return 0L;
}
lockCompactor();
this.kvMap = new OplogEntryIdMap();
this.skippedKeyBytes = new OplogEntryIdMap();
try {
if (this.haveRecoveredCrf && isDeleted())
return 0; // do this check while holding lock
if (!this.haveRecoveredCrf) {
this.haveRecoveredCrf = true;
}
long byteCount;
// if we have a KRF then read it and delay reading the CRF.
// Unless we are in synchronous recovery mode
if (!readKrf(deletedIds, recoverValues, recoverValuesSync, oplogsNeedingValueRecovery, latestOplog)) {
logger.info(LocalizedMessage.create(LocalizedStrings.DiskRegion_RECOVERING_OPLOG_0_1_2, new Object[] { toString(),
crfFile.getAbsolutePath(), getParent().getName() }));
byteCount = readCrf(deletedIds, recoverValues, latestOplog);
} else {
byteCount = this.crf.f.length();
}
if (!isPhase2()) {
if (getParent().isOfflineCompacting()) {
getParent().incLiveEntryCount(getRecoveryMap().size());
}
getParent().incDeadRecordCount(getRecordsSkipped());
}
if (getParent().isOfflineCompacting()) {
offlineCompact(deletedIds, latestOplog);
}
if (!alreadyRecoveredOnce) {
setRecoveredCrfSize(byteCount);
this.dirHolder.incrementTotalOplogSize(byteCount);
}
if (getParent().isOfflineCompacting()) {
if (isOplogEmpty()) {
this.deleted.set(false);
destroy();
}
}
return byteCount;
} finally {
this.kvMap = null;
this.skippedKeyBytes = null;
unlockCompactor();
}
}
private boolean offlineCompactPhase2 = false;
private boolean isPhase1() {
return !this.offlineCompactPhase2;
}
private boolean isPhase2() {
return this.offlineCompactPhase2;
}
private void offlineCompact(OplogEntryIdSet deletedIds, boolean latestOplog) {
// If we only do this if "(getRecordsSkipped() > 0)" then it will only
// compact
// an oplog that has some garbage in it.
// Instead if we do every oplog in case they set maxOplogSize
// then all oplogs will be converted to obey maxOplogSize.
// 45777: for normal offline compaction, we only do it when
// getRecordsSkipped() > 0
// but for upgrade disk store, we have to do it for pure creates oplog
if (getRecordsSkipped() > 0 || getHasDeletes() || getParent().isUpgradeVersionOnly()) {
this.offlineCompactPhase2 = true;
if (getOplogSet().getChild() == null) {
getOplogSet().initChild();
}
readCrf(deletedIds, true, latestOplog);
this.deleted.set(false);
destroyCrfOnly();
} else {
// For every live entry in this oplog add it to the deleted set
// so that we will skip it when we recovery the next oplogs.
for (OplogEntryIdMap.Iterator it = getRecoveryMap().iterator(); it.hasNext();) {
it.advance();
deletedIds.add(it.key());
}
close();
}
}
/**
* TODO soplog - This method is public just to test soplog recovery
*/
public DiskEntry.RecoveredEntry createRecoveredEntry(byte[] valueBytes, int valueLength, byte userBits, long oplogId,
long offsetInOplog, long oplogKeyId, boolean recoverValue, Version version, ByteArrayDataInput in) {
DiskEntry.RecoveredEntry re = null;
if (recoverValue || EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
Object value;
if (EntryBits.isLocalInvalid(userBits)) {
value = Token.LOCAL_INVALID;
valueLength = 0;
} else if (EntryBits.isInvalid(userBits)) {
value = Token.INVALID;
valueLength = 0;
} else if (EntryBits.isSerialized(userBits)) {
value = DiskEntry.Helper.readSerializedValue(valueBytes, version, in, false);
} else if (EntryBits.isTombstone(userBits)) {
value = Token.TOMBSTONE;
} else {
value = valueBytes;
}
re = new DiskEntry.RecoveredEntry(oplogKeyId, oplogId, offsetInOplog, userBits, valueLength, value);
} else {
re = new DiskEntry.RecoveredEntry(oplogKeyId, oplogId, offsetInOplog, userBits, valueLength);
}
return re;
}
private void readEndOfRecord(DataInput di) throws IOException {
int b = di.readByte();
if (b != END_OF_RECORD_ID) {
if (b == 0) {
logger.warn(LocalizedMessage.create(LocalizedStrings.Oplog_PARTIAL_RECORD));
// this is expected if this is the last record and we died while writing
// it.
throw new EOFException("found partial last record");
} else {
// Our implementation currently relies on all unwritten bytes having
// a value of 0. So throw this exception if we find one we didn't
// expect.
throw new IllegalStateException("expected end of record (byte==" + END_OF_RECORD_ID + ") or zero but found " + b);
}
}
}
private static void forceSkipBytes(CountingDataInputStream dis, int len) throws IOException {
int skipped = dis.skipBytes(len);
while (skipped < len) {
dis.readByte();
skipped++;
}
}
private int recordsSkippedDuringRecovery = 0;
private void incSkipped() {
this.recordsSkippedDuringRecovery++;
}
int getRecordsSkipped() {
return this.recordsSkippedDuringRecovery;
}
private VersionTag readVersionsFromOplog(DataInput dis) throws IOException {
if (Version.GFE_70.compareTo(currentRecoveredGFVersion()) <= 0) {
// this version format is for gemfire 7.0
// if we have different version format in 7.1, it will be handled in
// "else if"
int entryVersion = (int) InternalDataSerializer.readSignedVL(dis);
long regionVersion = InternalDataSerializer.readUnsignedVL(dis);
int memberId = (int) InternalDataSerializer.readUnsignedVL(dis);
Object member = getParent().getDiskInitFile().getCanonicalObject(memberId);
long timestamp = InternalDataSerializer.readUnsignedVL(dis);
int dsId = (int) InternalDataSerializer.readSignedVL(dis);
VersionTag vt = VersionTag.create((VersionSource) member);
vt.setEntryVersion(entryVersion);
vt.setRegionVersion(regionVersion);
vt.setMemberID((VersionSource) member);
vt.setVersionTimeStamp(timestamp);
vt.setDistributedSystemId(dsId);
return vt;
} else {
// pre-7.0
return null;
}
}
private synchronized VersionTag createDummyTag(DiskRecoveryStore drs) {
DiskStoreID member = getParent().getDiskStoreID();
int memberid = getParent().getDiskInitFile().getOrCreateCanonicalId(member);
long regionVersion = drs.getVersionForMember(member);
VersionTag vt = VersionTag.create(member);
vt.setEntryVersion(1);
vt.setRegionVersion(regionVersion + 1);
vt.setMemberID(member);
vt.setVersionTimeStamp(getParent().getCache().cacheTimeMillis());
vt.setDistributedSystemId(-1);
return vt;
}
/**
* Reads an oplog entry of type Create
*
* @param dis
* DataInputStream from which the oplog is being read
* @param opcode
* byte whether the id is short/int/long
* @param recoverValue
* @throws IOException
*/
private void readNewEntry(CountingDataInputStream dis, byte opcode, OplogEntryIdSet deletedIds, boolean recoverValue,
final LocalRegion currentRegion, boolean keyRequiresRegionContext, Version version, ByteArrayDataInput in,
HeapDataOutputStream hdos) throws IOException {
final boolean isPersistRecoveryDebugEnabled = logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY);
long oplogOffset = -1;
byte userBits = dis.readByte();
byte[] objValue = null;
int valueLength = 0;
long oplogKeyId = incRecoverNewEntryId();
long drId = DiskInitFile.readDiskRegionID(dis);
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
// read versions
VersionTag tag = null;
boolean isDummy = false;
if (EntryBits.isWithVersions(userBits)) {
tag = readVersionsFromOplog(dis);
isDummy = false;
} else if (getParent().isUpgradeVersionOnly() && drs != null) {
tag = this.createDummyTag(drs);
userBits = EntryBits.setWithVersions(userBits, true);
isDummy = true;
}
if (drs != null && !drs.getDiskRegionView().getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
// 50044 Remove version tag from entry if we don't want versioning for
// this region
tag = null;
userBits = EntryBits.setWithVersions(userBits, false);
}
OkToSkipResult skipResult = okToSkipModifyRecord(deletedIds, drId, drs, oplogKeyId, true, tag);
if (skipResult.skip()) {
if (!isPhase2()) {
this.stats.incRecoveryRecordsSkipped();
incSkipped();
}
} else if (recoverValue && drs.lruLimitExceeded() && !getParent().isOfflineCompacting()) {
this.stats.incRecoveredValuesSkippedDueToLRU();
recoverValue = false;
}
CompactionRecord p2cr = null;
long crOffset;
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
if (EntryBits.isInvalid(userBits)) {
objValue = DiskEntry.INVALID_BYTES;
} else if (EntryBits.isTombstone(userBits)) {
objValue = DiskEntry.TOMBSTONE_BYTES;
} else {
objValue = DiskEntry.LOCAL_INVALID_BYTES;
}
crOffset = dis.getCount();
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
} else {
int len = dis.readInt();
oplogOffset = dis.getCount();
crOffset = oplogOffset;
valueLength = len;
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
if (recoverValue && !skipResult.skip()) {
byte[] valueBytes = new byte[len];
dis.readFully(valueBytes);
objValue = valueBytes;
validateValue(valueBytes, userBits, version, in);
} else {
forceSkipBytes(dis, len);
}
}
{
int len = dis.readInt();
incTotalCount();
if (skipResult.skip()) {
if (skipResult.skipKey()) {
forceSkipBytes(dis, len);
} else {
byte[] keyBytes = new byte[len];
dis.readFully(keyBytes);
skippedKeyBytes.put(oplogKeyId, keyBytes);
}
readEndOfRecord(dis);
if (drs != null && tag != null) {
// Update the RVV with the new entry
// This must be done after reading the end of record to make sure
// we don't have a corrupt record. See bug #45538
drs.recordRecoveredVersionTag(tag);
}
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readNewEntry SKIPPING oplogKeyId=<{}> drId={} userBits={} keyLen={} valueLen={} tag={}", oplogKeyId, drId, userBits,
len, valueLength, tag);
}
} else {
byte[] keyBytes = null;
if (isPhase2()) {
forceSkipBytes(dis, len);
} else {
keyBytes = new byte[len];
dis.readFully(keyBytes);
}
readEndOfRecord(dis);
if (drs != null && tag != null) {
// Update the RVV with the new entry
// This must be done after reading the end of record to make sure
// we don't have a corrupt record. See bug #45538
drs.recordRecoveredVersionTag(tag);
}
if (getParent().isOfflineCompacting()) {
if (isPhase1()) {
CompactionRecord cr = new CompactionRecord(keyBytes, crOffset);
getRecoveryMap().put(oplogKeyId, cr);
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
} else { // phase2
Assert.assertTrue(p2cr != null, "First pass did not find create a compaction record");
getOplogSet().getChild().copyForwardForOfflineCompact(oplogKeyId, p2cr.getKeyBytes(), objValue, userBits, drId, tag);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readNewEntry copyForward oplogKeyId=<{}>", oplogKeyId);
}
// add it to the deletedIds set so we will ignore it in earlier
// oplogs
deletedIds.add(oplogKeyId);
}
} else {
Object key = deserializeKey(keyBytes, version, in);
if (keyRequiresRegionContext) {
((KeyWithRegionContext) key).setRegionContext(currentRegion);
}
{
Object oldValue = getRecoveryMap().put(oplogKeyId, key);
if (oldValue != null) {
throw new AssertionError(LocalizedStrings.Oplog_DUPLICATE_CREATE.toLocalizedString(oplogKeyId));
}
}
DiskEntry de = drs.getDiskEntry(key);
if (de == null) {
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readNewEntry oplogKeyId=<{}> drId={} key={} userBits={} oplogOffset={} valueLen={} tag={}", oplogKeyId, drId, key,
userBits, oplogOffset, valueLength, tag);
}
DiskEntry.RecoveredEntry re = createRecoveredEntry(objValue, valueLength, userBits, getOplogId(), oplogOffset,
oplogKeyId, recoverValue, version, in);
if (tag != null) {
re.setVersionTag(tag);
}
initRecoveredEntry(drs.getDiskRegionView(), drs.initializeRecoveredEntry(key, re));
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
} else {
DiskId curdid = de.getDiskId();
assert curdid.getOplogId() != getOplogId();
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"ignore readNewEntry because getOplogId()={} != curdid.getOplogId()={} for drId={} key={}", getOplogId(), curdid
.getOplogId(), drId, key);
}
}
}
}
}
}
/**
* Reads an oplog entry of type Modify
*
* @param dis
* DataInputStream from which the oplog is being read
* @param opcode
* byte whether the id is short/int/long
* @param recoverValue
* @param currentRegion
* @param keyRequiresRegionContext
* @throws IOException
*/
private void readModifyEntry(CountingDataInputStream dis, byte opcode, OplogEntryIdSet deletedIds, boolean recoverValue,
LocalRegion currentRegion, boolean keyRequiresRegionContext, Version version, ByteArrayDataInput in, HeapDataOutputStream hdos)
throws IOException {
final boolean isPersistRecoveryDebugEnabled = logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY);
long oplogOffset = -1;
byte userBits = dis.readByte();
int idByteCount = (opcode - OPLOG_MOD_ENTRY_1ID) + 1;
// long debugRecoverModEntryId = this.recoverModEntryId;
long oplogKeyId = getModEntryId(dis, idByteCount);
// long debugOplogKeyId = dis.readLong();
// //assert oplogKeyId == debugOplogKeyId
// // : "expected=" + debugOplogKeyId + " actual=" + oplogKeyId
// assert debugRecoverModEntryId == debugOplogKeyId
// : "expected=" + debugOplogKeyId + " actual=" + debugRecoverModEntryId
// + " idByteCount=" + idByteCount
// + " delta=" + this.lastDelta;
long drId = DiskInitFile.readDiskRegionID(dis);
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
// read versions
VersionTag tag = null;
if (EntryBits.isWithVersions(userBits)) {
tag = readVersionsFromOplog(dis);
} else if (getParent().isUpgradeVersionOnly() && drs != null) {
tag = this.createDummyTag(drs);
userBits = EntryBits.setWithVersions(userBits, true);
}
if (drs != null && !drs.getDiskRegionView().getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
// 50044 Remove version tag from entry if we don't want versioning for
// this region
tag = null;
userBits = EntryBits.setWithVersions(userBits, false);
}
OkToSkipResult skipResult = okToSkipModifyRecord(deletedIds, drId, drs, oplogKeyId, false, tag);
if (skipResult.skip()) {
if (!isPhase2()) {
incSkipped();
this.stats.incRecoveryRecordsSkipped();
}
} else if (recoverValue && drs.lruLimitExceeded() && !getParent().isOfflineCompacting()) {
this.stats.incRecoveredValuesSkippedDueToLRU();
recoverValue = false;
}
byte[] objValue = null;
int valueLength = 0;
CompactionRecord p2cr = null;
long crOffset;
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
if (EntryBits.isInvalid(userBits)) {
objValue = DiskEntry.INVALID_BYTES;
} else if (EntryBits.isTombstone(userBits)) {
objValue = DiskEntry.TOMBSTONE_BYTES;
} else {
objValue = DiskEntry.LOCAL_INVALID_BYTES;
}
crOffset = dis.getCount();
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
} else {
int len = dis.readInt();
oplogOffset = dis.getCount();
crOffset = oplogOffset;
valueLength = len;
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
if (!skipResult.skip() && recoverValue) {
byte[] valueBytes = new byte[len];
dis.readFully(valueBytes);
objValue = valueBytes;
validateValue(valueBytes, userBits, version, in);
} else {
forceSkipBytes(dis, len);
}
}
readEndOfRecord(dis);
if (drs != null && tag != null) {
// Update the RVV with the new entry
// This must be done after reading the end of record to make sure
// we don't have a corrupt record. See bug #45538
drs.recordRecoveredVersionTag(tag);
}
incTotalCount();
if (!skipResult.skip()) {
Object key = getRecoveryMap().get(oplogKeyId);
// if the key is not in the recover map, it's possible it
// was previously skipped. Check the skipped bytes map for the key.
if (key == null) {
byte[] keyBytes = (byte[]) skippedKeyBytes.get(oplogKeyId);
if (keyBytes != null) {
key = deserializeKey(keyBytes, version, in);
if (keyRequiresRegionContext) {
((KeyWithRegionContext) key).setRegionContext(currentRegion);
}
}
}
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readModifyEntry oplogKeyId=<{}> drId={} key=<{}> userBits={} oplogOffset={} tag={} valueLen={}", oplogKeyId, drId, key,
userBits, oplogOffset, tag, valueLength);
}
// Will no longer be null since 1st modify record in any oplog
// will now be a MOD_ENTRY_WITH_KEY record.
assert key != null;
if (getParent().isOfflineCompacting()) {
if (isPhase1()) {
CompactionRecord cr = (CompactionRecord) key;
incSkipped(); // we are going to compact the previous record away
cr.update(crOffset);
} else { // phase2
Assert.assertTrue(p2cr != null, "First pass did not find create a compaction record");
getOplogSet().getChild().copyForwardForOfflineCompact(oplogKeyId, p2cr.getKeyBytes(), objValue, userBits, drId, tag);
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readModifyEntry copyForward oplogKeyId=<{}>", oplogKeyId);
}
// add it to the deletedIds set so we will ignore it in earlier oplogs
deletedIds.add(oplogKeyId);
}
} else {
// Check the actual region to see if it has this key from
// a previous recovered oplog.
DiskEntry de = drs.getDiskEntry(key);
// This may actually be create, if the previous create or modify
// of this entry was cleared through the RVV clear.
if (de == null) {
DiskRegionView drv = drs.getDiskRegionView();
// and create an entry
DiskEntry.RecoveredEntry re = createRecoveredEntry(objValue, valueLength, userBits, getOplogId(), oplogOffset,
oplogKeyId, recoverValue, version, in);
if (tag != null) {
re.setVersionTag(tag);
}
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readModEntryWK init oplogKeyId=<{}> drId={} key=<{}> oplogOffset={} userBits={} valueLen={} tag={}", oplogKeyId,
drId, key, oplogOffset, userBits, valueLength, tag);
}
initRecoveredEntry(drv, drs.initializeRecoveredEntry(key, re));
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
} else {
DiskEntry.RecoveredEntry re = createRecoveredEntry(objValue, valueLength, userBits, getOplogId(), oplogOffset,
oplogKeyId, recoverValue, version, in);
if (tag != null) {
re.setVersionTag(tag);
}
de = drs.updateRecoveredEntry(key, re);
updateRecoveredEntry(drs.getDiskRegionView(), de, re);
this.stats.incRecoveredEntryUpdates();
}
}
} else {
if (isPersistRecoveryDebugEnabled) {
logger.trace(LogMarker.PERSIST_RECOVERY, "skipping readModifyEntry oplogKeyId=<{}> drId={}", oplogKeyId, drId);
}
}
}
private void readVersionTagOnlyEntry(CountingDataInputStream dis, byte opcode) throws IOException {
long oplogOffset = -1;
long drId = DiskInitFile.readDiskRegionID(dis);
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
// read versions
VersionTag tag = readVersionsFromOplog(dis);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readVersionTagOnlyEntry drId={} tag={}", drId, tag);
}
readEndOfRecord(dis);
// Update the RVV with the new entry
if (drs != null) {
drs.recordRecoveredVersionTag(tag);
}
}
private void validateValue(byte[] valueBytes, byte userBits, Version version, ByteArrayDataInput in) {
if (getParent().isValidating()) {
if (EntryBits.isSerialized(userBits)) {
// make sure values are deserializable
if (!PdxWriterImpl.isPdx(valueBytes)) { // fix bug 43011
try {
DiskEntry.Helper.readSerializedValue(valueBytes, version, in, true);
} catch (SerializationException ex) {
if (logger.isDebugEnabled()) {
logger.debug("Could not deserialize recovered value: {}" + ex.getCause(), ex);
}
}
}
}
}
}
/**
* Reads an oplog entry of type ModifyWithKey
*
* @param dis
* DataInputStream from which the oplog is being read
* @param opcode
* byte whether the id is short/int/long
* @param deletedIds
* @param recoverValue
* @throws IOException
*/
private void readModifyEntryWithKey(CountingDataInputStream dis, byte opcode, OplogEntryIdSet deletedIds, boolean recoverValue,
final LocalRegion currentRegion, final boolean keyRequiresRegionContext, Version version, ByteArrayDataInput in,
HeapDataOutputStream hdos) throws IOException {
long oplogOffset = -1;
byte userBits = dis.readByte();
int idByteCount = (opcode - OPLOG_MOD_ENTRY_WITH_KEY_1ID) + 1;
// long debugRecoverModEntryId = this.recoverModEntryId;
long oplogKeyId = getModEntryId(dis, idByteCount);
// long debugOplogKeyId = dis.readLong();
// //assert oplogKeyId == debugOplogKeyId
// // : "expected=" + debugOplogKeyId + " actual=" + oplogKeyId
// assert debugRecoverModEntryId == debugOplogKeyId
// : "expected=" + debugOplogKeyId + " actual=" + debugRecoverModEntryId
// + " idByteCount=" + idByteCount
// + " delta=" + this.lastDelta;
long drId = DiskInitFile.readDiskRegionID(dis);
DiskRecoveryStore drs = getOplogSet().getCurrentlyRecovering(drId);
// read version
VersionTag tag = null;
if (EntryBits.isWithVersions(userBits)) {
tag = readVersionsFromOplog(dis);
} else if (getParent().isUpgradeVersionOnly() && drs != null) {
tag = this.createDummyTag(drs);
userBits = EntryBits.setWithVersions(userBits, true);
}
if (drs != null && !drs.getDiskRegionView().getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
// 50044 Remove version tag from entry if we don't want versioning for
// this region
tag = null;
userBits = EntryBits.setWithVersions(userBits, false);
}
OkToSkipResult skipResult = okToSkipModifyRecord(deletedIds, drId, drs, oplogKeyId, true, tag);
if (skipResult.skip()) {
if (!isPhase2()) {
incSkipped();
this.stats.incRecoveryRecordsSkipped();
}
} else if (recoverValue && drs.lruLimitExceeded() && !getParent().isOfflineCompacting()) {
this.stats.incRecoveredValuesSkippedDueToLRU();
recoverValue = false;
}
byte[] objValue = null;
int valueLength = 0;
CompactionRecord p2cr = null;
long crOffset;
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
if (EntryBits.isInvalid(userBits)) {
objValue = DiskEntry.INVALID_BYTES;
} else if (EntryBits.isTombstone(userBits)) {
objValue = DiskEntry.TOMBSTONE_BYTES;
} else {
objValue = DiskEntry.LOCAL_INVALID_BYTES;
}
crOffset = dis.getCount();
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
} else {
int len = dis.readInt();
oplogOffset = dis.getCount();
crOffset = oplogOffset;
valueLength = len;
if (!skipResult.skip()) {
if (isPhase2()) {
p2cr = (CompactionRecord) getRecoveryMap().get(oplogKeyId);
if (p2cr != null && p2cr.getOffset() != crOffset) {
skipResult = OkToSkipResult.SKIP_RECORD;
}
}
}
if (!skipResult.skip() && recoverValue) {
byte[] valueBytes = new byte[len];
dis.readFully(valueBytes);
objValue = valueBytes;
validateValue(valueBytes, userBits, version, in);
} else {
forceSkipBytes(dis, len);
}
}
int keyLen = dis.readInt();
incTotalCount();
if (skipResult.skip()) {
if (skipResult.skipKey()) {
forceSkipBytes(dis, keyLen);
} else {
byte[] keyBytes = new byte[keyLen];
dis.readFully(keyBytes);
skippedKeyBytes.put(oplogKeyId, keyBytes);
}
readEndOfRecord(dis);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "skipping readModEntryWK init oplogKeyId=<{}> drId={}", oplogKeyId, drId);
}
} else {
// read the key
byte[] keyBytes = null;
if (isPhase2()) {
forceSkipBytes(dis, keyLen);
} else {
keyBytes = new byte[keyLen];
dis.readFully(keyBytes);
}
readEndOfRecord(dis);
if (drs != null && tag != null) {
// Update the RVV with the new entry
// This must be done after reading the end of record to make sure
// we don't have a corrupt record. See bug #45538
drs.recordRecoveredVersionTag(tag);
}
assert oplogKeyId >= 0;
if (getParent().isOfflineCompacting()) {
if (isPhase1()) {
CompactionRecord cr = new CompactionRecord(keyBytes, crOffset);
getRecoveryMap().put(oplogKeyId, cr);
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
} else { // phase2
Assert.assertTrue(p2cr != null, "First pass did not find create a compaction record");
getOplogSet().getChild().copyForwardForOfflineCompact(oplogKeyId, p2cr.getKeyBytes(), objValue, userBits, drId, tag);
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readModifyEntryWithKey copyForward oplogKeyId=<{}>", oplogKeyId);
}
// add it to the deletedIds set so we will ignore it in earlier oplogs
deletedIds.add(oplogKeyId);
}
} else {
Object key = deserializeKey(keyBytes, version, in);
if (keyRequiresRegionContext) {
((KeyWithRegionContext) key).setRegionContext(currentRegion);
}
Object oldValue = getRecoveryMap().put(oplogKeyId, key);
if (oldValue != null) {
throw new AssertionError(LocalizedStrings.Oplog_DUPLICATE_CREATE.toLocalizedString(oplogKeyId));
}
// Check the actual region to see if it has this key from
// a previous recovered oplog.
DiskEntry de = drs.getDiskEntry(key);
if (de == null) {
DiskRegionView drv = drs.getDiskRegionView();
// and create an entry
DiskEntry.RecoveredEntry re = createRecoveredEntry(objValue, valueLength, userBits, getOplogId(), oplogOffset,
oplogKeyId, recoverValue, version, in);
if (tag != null) {
re.setVersionTag(tag);
}
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"readModEntryWK init oplogKeyId=<{}> drId={} key={} oplogOffset={} userBits={} valueLen={} tag={}", oplogKeyId, drId,
key, oplogOffset, userBits, valueLength, tag);
}
initRecoveredEntry(drv, drs.initializeRecoveredEntry(key, re));
drs.getDiskRegionView().incRecoveredEntryCount();
this.stats.incRecoveredEntryCreates();
} else {
DiskId curdid = de.getDiskId();
assert curdid.getOplogId() != getOplogId() : "Mutiple ModEntryWK in the same oplog for getOplogId()=" + getOplogId()
+ " , curdid.getOplogId()=" + curdid.getOplogId() + " , for drId=" + drId + " , key=" + key;
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"ignore readModEntryWK because getOplogId()={} != curdid.getOplogId()={} for drId={} key={}", getOplogId(), curdid
.getOplogId(), drId, key);
}
// de = drs.updateRecoveredEntry(key, re);
// updateRecoveredEntry(drv, de, re);
// this.stats.incRecoveredEntryUpdates();
}
}
}
}
/**
* Reads an oplog entry of type Delete
*
* @param dis
* DataInputStream from which the oplog is being read
* @param opcode
* byte whether the id is short/int/long
* @param parent
* instance of disk region
* @throws IOException
*/
private void readDelEntry(CountingDataInputStream dis, byte opcode, OplogEntryIdSet deletedIds, DiskStoreImpl parent)
throws IOException
{
int idByteCount = (opcode - OPLOG_DEL_ENTRY_1ID) + 1;
// long debugRecoverDelEntryId = this.recoverDelEntryId;
long oplogKeyId = getDelEntryId(dis, idByteCount);
// long debugOplogKeyId = dis.readLong();
readEndOfRecord(dis);
// assert debugRecoverDelEntryId == debugOplogKeyId
// : "expected=" + debugOplogKeyId + " actual=" + debugRecoverDelEntryId
// + " idByteCount=" + idByteCount
// + " delta=" + this.lastDelta;
deletedIds.add(oplogKeyId);
setHasDeletes(true);
this.stats.incRecoveredEntryDestroys();
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "readDelEntry oplogKeyId=<{}>", oplogKeyId);
}
}
/**
* Keeps track of the drId of Regions that have records in this oplog that
* have not yet been recovered. If this count is > 0 then this oplog can not
* be compacted.
*/
private final AtomicInteger unrecoveredRegionCount = new AtomicInteger();
private void addUnrecoveredRegion(long drId) {
DiskRegionInfo dri = getOrCreateDRI(drId);
if (dri.testAndSetUnrecovered()) {
this.unrecoveredRegionCount.incrementAndGet();
}
}
/**
* For each dri that this oplog has that is currently unrecoverable check to
* see if a DiskRegion that is recoverable now exists.
*/
void checkForRecoverableRegion(DiskRegionView dr) {
if (this.unrecoveredRegionCount.get() > 0) {
DiskRegionInfo dri = getDRI(dr);
if (dri != null) {
if (dri.testAndSetRecovered(dr)) {
this.unrecoveredRegionCount.decrementAndGet();
}
}
}
}
void updateDiskRegion(DiskRegionView dr) {
DiskRegionInfo dri = getDRI(dr);
if (dri != null) {
dri.setDiskRegion(dr);
}
}
/**
* Returns true if it is ok the skip the current modify record which had the
* given oplogEntryId. It is ok to skip if any of the following are true: 1.
* deletedIds contains the id 2. the last modification of the entry was done
* by a record read from an oplog other than this oplog
*
* @param tag
*/
private OkToSkipResult okToSkipModifyRecord(OplogEntryIdSet deletedIds, long drId, DiskRecoveryStore drs, long oplogEntryId,
boolean checkRecoveryMap, VersionTag tag) {
if (deletedIds.contains(oplogEntryId)) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "okToSkip because oplogEntryId={} was deleted for drId={}", oplogEntryId, drId);
}
return OkToSkipResult.SKIP_RECORD;
}
// if (dr == null || !dr.isReadyForRecovery()) {
// // Region has not yet been created (it is not in the diskStore drMap).
// // or it is not ready for recovery (i.e. it is a ProxyBucketRegion).
// if (getParent().getDiskInitFile().regionExists(drId)
// || (dr != null && !dr.isReadyForRecovery())) {
// // Prevent compactor from removing this oplog.
// // It needs to be in this state until all the regions stored it in
// // are recovered.
// addUnrecoveredRegion(drId);
// } else {
// // someone must have deleted the region from the initFile (with our
// public tool?)
// // so skip this record and don't count it as live so that the compactor
// can gc it.
// }
// return true;
// } else
if (drs == null) { // we are not currently recovering this region
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "okToSkip because drs is null for drId={}", drId);
}
// Now when the diskStore is created we recover all the regions
// immediately.
// After that they can close and reopen a region but the close code calls
// addUnrecoveredRegion. So I think at this point we don't need to do
// anything.
// // Prevent compactor from removing this oplog.
// // It needs to be in this state until all the regions stored it in
// // are recovered.
// addUnrecoveredRegion(drId);
return OkToSkipResult.SKIP_RECORD;
}
if (!checkRecoveryMap) {
Object key = getRecoveryMap().get(oplogEntryId);
if (key != null) {
DiskEntry de = drs.getDiskEntry(key);
if (de != null) {
DiskId curdid = de.getDiskId();
if (curdid != null) {
if (curdid.getOplogId() != getOplogId()) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY,
"okToSkip because getOplogId()={} != curdid.getOplogId()={} for drId={} key={}", getOplogId(), curdid
.getOplogId(), drId, key);
}
return OkToSkipResult.SKIP_RECORD;
}
}
}
}
}
return okToSkipRegion(drs.getDiskRegionView(), oplogEntryId, tag);
}
/**
* Returns true if the drId region has been destroyed or if oplogKeyId
* preceeds the last clear done on the drId region
*
* @param tag
*/
private OkToSkipResult okToSkipRegion(DiskRegionView drv, long oplogKeyId, VersionTag tag) {
long lastClearKeyId = drv.getClearOplogEntryId();
if (lastClearKeyId != DiskStoreImpl.INVALID_ID) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "lastClearKeyId={} oplogKeyId={}", lastClearKeyId, oplogKeyId);
}
if (lastClearKeyId >= 0) {
if (oplogKeyId <= lastClearKeyId) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "okToSkip because oplogKeyId={} <= lastClearKeyId={} for drId={}", oplogKeyId,
lastClearKeyId, drv.getId());
}
// @todo add some wraparound logic
return OkToSkipResult.SKIP_RECORD;
}
} else {
// lastClearKeyId is < 0 which means it wrapped around
// treat it like an unsigned value (-1 == MAX_UNSIGNED)
if (oplogKeyId > 0 || oplogKeyId <= lastClearKeyId) {
// If oplogKeyId > 0 then it happened before the clear
// (assume clear happened after we wrapped around to negative).
// If oplogKeyId < 0 then it happened before the clear
// if it is < lastClearKeyId
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "okToSkip because oplogKeyId={} <= lastClearKeyId={} for drId={}", oplogKeyId,
lastClearKeyId, drv.getId());
}
return OkToSkipResult.SKIP_RECORD;
}
}
}
RegionVersionVector clearRVV = drv.getClearRVV();
if (clearRVV != null) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "clearRVV={} tag={}", clearRVV, tag);
}
if (clearRVV.contains(tag.getMemberID(), tag.getRegionVersion())) {
if (logger.isTraceEnabled(LogMarker.PERSIST_RECOVERY)) {
logger.trace(LogMarker.PERSIST_RECOVERY, "okToSkip because tag={} <= clearRVV={} for drId={}", tag, clearRVV, drv.getId());
}
// For an RVV clear, we can only skip the value during recovery
// because later modifies may use the oplog key id.
return OkToSkipResult.SKIP_VALUE;
}
}
return OkToSkipResult.DONT_SKIP;
}
private long getModEntryId(CountingDataInputStream dis, int idByteCount) throws IOException {
return calcModEntryId(getEntryIdDelta(dis, idByteCount));
}
private long getDelEntryId(CountingDataInputStream dis, int idByteCount) throws IOException {
return calcDelEntryId(getEntryIdDelta(dis, idByteCount));
}
private/* HACK DEBUG */static long getEntryIdDelta(CountingDataInputStream dis, int idByteCount) throws IOException {
assert idByteCount >= 1 && idByteCount <= 8 : idByteCount;
long delta;
byte firstByte = dis.readByte();
// if (firstByte < 0) {
// delta = 0xFFFFFFFFFFFFFF00L | firstByte;
// } else {
// delta = firstByte;
// }
delta = firstByte;
idByteCount--;
while (idByteCount > 0) {
delta <<= 8;
delta |= (0x00FF & dis.readByte());
idByteCount--;
}
// this.lastDelta = delta; // HACK DEBUG
return delta;
}
// private long lastDelta; // HACK DEBUG
/**
* Call this when the cache is closed or region is destroyed. Deletes the lock
* files.
*/
public void close() {
if (this.closed) {
return;
}
if (logger.isDebugEnabled()) {
logger.debug("Oplog::close: Store name ={} Oplog ID = {}", parent.getName(), oplogId);
}
basicClose(false);
}
/**
* Close the files of a oplog but don't set any state. Used by unit tests
*/
public void testClose() {
try {
this.crf.channel.close();
} catch (IOException ignore) {
}
try {
this.crf.raf.close();
} catch (IOException ignore) {
}
this.crf.RAFClosed = true;
try {
this.drf.channel.close();
} catch (IOException ignore) {
}
try {
this.drf.raf.close();
} catch (IOException ignore) {
}
this.drf.RAFClosed = true;
}
private void basicClose(boolean forceDelete) {
flushAll();
synchronized (this.lock/* crf */) {
unpreblow(this.crf, getMaxCrfSize());
if (!this.crf.RAFClosed) {
try {
this.crf.channel.close();
} catch (IOException ignore) {
}
try {
this.crf.raf.close();
} catch (IOException ignore) {
}
this.crf.RAFClosed = true;
this.stats.decOpenOplogs();
}
this.closed = true;
}
synchronized (this.lock/* drf */) {
unpreblow(this.drf, getMaxDrfSize());
if (!this.drf.RAFClosed) {
try {
this.drf.channel.close();
} catch (IOException ignore) {
}
try {
this.drf.raf.close();
} catch (IOException ignore) {
}
this.drf.RAFClosed = true;
}
}
if (forceDelete) {
this.deleteFiles(false);
}
}
/**
* Used by tests to confirm that an oplog was compacted
*/
boolean testConfirmCompacted() {
return this.closed && this.deleted.get() && getOplogSize() == 0;
}
// @todo add state to determine when both crf and drf and been deleted.
/**
* Note that this can return true even when we still need to keep the oplog
* around because its drf is still needed.
*/
boolean isDeleted() {
return this.deleted.get();
}
/**
* Destroys this oplog. First it will call close which will cleanly close all
* Async threads and then the oplog file will be deleted. The deletion of lock
* files will be taken care of by the close.
*
*/
public void destroy() {
lockCompactor();
try {
if (!this.closed) {
this.basicClose(true /* force delete */);
} else {
// do the following even if we were already closed
deleteFiles(false);
}
} finally {
unlockCompactor();
}
}
/*
* In offline compaction, after compacted each oplog, only the crf will be
* deleted. Oplog with drf only will be housekepted later.
*/
public void destroyCrfOnly() {
lockCompactor();
try {
if (!this.closed) {
this.basicClose(true /* force delete */);
} else {
// do the following even if we were already closed
deleteFiles(true);
}
} finally {
unlockCompactor();
}
}
/**
* A check to confirm that the oplog has been closed because of the cache
* being closed
*
*/
private void checkClosed() {
getParent().getCancelCriterion().checkCancelInProgress(null);
if (!this.closed) {
return;
}
throw new OplogCancelledException("This Oplog has been closed.");
}
/**
* Return the number of bytes needed to encode the given long. Value returned
* will be >= 1 and <= 8.
*/
static int bytesNeeded(long v) {
if (v < 0) {
v = ~v;
}
return ((64 - Long.numberOfLeadingZeros(v)) / 8) + 1;
}
/**
* Return absolute value of v.
*/
static long abs(long v) {
if (v < 0) {
return -v;
} else {
return v;
}
}
private long calcDelta(long opLogKeyID, byte opCode) {
long delta;
if (opCode == OPLOG_DEL_ENTRY_1ID) {
delta = opLogKeyID - this.writeDelEntryId;
this.writeDelEntryId = opLogKeyID;
} else {
delta = opLogKeyID - this.writeModEntryId;
this.writeModEntryId = opLogKeyID;
}
return delta;
}
/**
* This function records all the data for the current op into this.opState.
*
* @param opCode
* The int value identifying whether it is create/modify or delete
* operation
* @param entry
* The DiskEntry object being operated upon
* @param value
* The byte array representing the value
* @param userBits
* @throws IOException
*/
private void initOpState(byte opCode, DiskRegionView dr, DiskEntry entry, ValueWrapper value, byte userBits,
boolean notToUseUserBits) throws IOException {
this.opState.initialize(opCode, dr, entry, value, userBits, notToUseUserBits);
}
private void clearOpState() {
this.opState.clear();
}
/**
* Returns the number of bytes it will take to serialize this.opState.
*/
private int getOpStateSize() {
return this.opState.getSize();
}
private int getOpStateValueOffset() {
return this.opState.getValueOffset();
}
private byte calcUserBits(ValueWrapper vw) {
return vw.getUserBits();
}
/**
* Returns true if the given entry has not yet been written to this oplog.
*/
private boolean modNeedsKey(DiskEntry entry) {
DiskId did = entry.getDiskId();
synchronized (did) {
if (did.getOplogId() != getOplogId()) {
// the last record for it was written in a different oplog
// so we need the key.
return true;
} else {
return false;
}
}
}
/**
* Asif: Modified the code so as to reuse the already created ByteBuffer
* during transition. Creates a key/value pair from a region entry on disk.
* Updates all of the necessary {@linkplain DiskStoreStats statistics} and
* invokes basicCreate
*
* @param entry
* The DiskEntry object for this key/value pair.
* @param value
* byte array representing the value
* @throws DiskAccessException
* @throws IllegalStateException
*
*/
public final void create(LocalRegion region, DiskEntry entry, ValueWrapper value, boolean async) {
if (this != getOplogSet().getChild()) {
getOplogSet().getChild().create(region, entry, value, async);
} else {
DiskId did = entry.getDiskId();
boolean exceptionOccured = false;
byte prevUsrBit = did.getUserBits();
int len = did.getValueLength();
try {
// It is ok to do this outside of "lock" because
// create records do not need to change.
byte userBits = calcUserBits(value);
// save versions for creates and updates even if value is bytearrary in
// 7.0
if (entry.getVersionStamp() != null) {
if (entry.getVersionStamp().getMemberID() == null) {
throw new AssertionError("Version stamp should have a member at this point for entry " + entry);
}
// pdx and tx will not use version
userBits = EntryBits.setWithVersions(userBits, true);
}
basicCreate(region.getDiskRegion(), entry, value, userBits, async);
} catch (IOException ex) {
exceptionOccured = true;
region.getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()),
ex, region.getFullPath());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
exceptionOccured = true;
region.getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, region.getFullPath());
} finally {
if (exceptionOccured) {
did.setValueLength(len);
did.setUserBits(prevUsrBit);
}
}
}
}
/**
* Return true if no records have been written to the oplog yet.
*/
private boolean isFirstRecord() {
return this.firstRecord;
}
/**
* Asif: A helper function which identifies whether to create the entry in the
* current oplog or to make the switch to the next oplog. This function
* enables us to reuse the byte buffer which got created for an oplog which no
* longer permits us to use itself
*
* @param entry
* DiskEntry object representing the current Entry
* @throws IOException
* @throws InterruptedException
*/
private void basicCreate(DiskRegion dr, DiskEntry entry, ValueWrapper value, byte userBits, boolean async) throws IOException,
InterruptedException {
DiskId id = entry.getDiskId();
boolean useNextOplog = false;
long startPosForSynchOp = -1;
if (DiskStoreImpl.KRF_DEBUG) {
// wait for cache close to create krf
System.out.println("basicCreate KRF_DEBUG");
Thread.sleep(1000);
}
synchronized (this.lock) { // TODO soplog perf analysis shows this as a
// contention point
// synchronized (this.crf) {
initOpState(OPLOG_NEW_ENTRY_0ID, dr, entry, value, userBits, false);
// Asif : Check if the current data in ByteBuffer will cause a
// potential increase in the size greater than the max allowed
long temp = (getOpStateSize() + this.crf.currSize);
if (!this.wroteNewEntryBase) {
temp += OPLOG_NEW_ENTRY_BASE_REC_SIZE;
}
if (this != getOplogSet().getChild()) {
useNextOplog = true;
} else if (temp > getMaxCrfSize() && !isFirstRecord()) {
switchOpLog(dr, getOpStateSize(), entry);
useNextOplog = true;
} else {
if (this.lockedForKRFcreate) {
CacheClosedException cce = new CacheClosedException("The disk store is closed.");
dr.getCancelCriterion().checkCancelInProgress(cce);
throw cce;
}
this.firstRecord = false;
writeNewEntryBaseRecord(async);
// Now we can finally call newOplogEntryId.
// We need to make sure the create records
// are written in the same order as they are created.
// This allows us to not encode the oplogEntryId explicitly in the
// record
long createOplogEntryId = getOplogSet().newOplogEntryId();
long old_kid = id.getKeyId();
id.setKeyId(createOplogEntryId);
// startPosForSynchOp = this.crf.currSize;
// Asif: Allow it to be added to the OpLOg so increase the
// size of currenstartPosForSynchOpt oplog
int dataLength = getOpStateSize();
// Asif: It is necessary that we set the
// Oplog ID here without releasing the lock on object as we are
// writing to the file after releasing the lock. This can cause
// a situation where the
// switching thread has added Oplog for compaction while the previous
// thread has still not started writing. Thus compactor can
// miss an entry as the oplog Id was not set till then.
// This is because a compactor thread will iterate over the entries &
// use only those which have OplogID equal to that of Oplog being
// compacted without taking any lock. A lock is taken only if the
// entry is a potential candidate.
// Further the compactor may delete the file as a compactor thread does
// not require to take any shared/exclusive lock at DiskStoreImpl
// or Oplog level.
// It is also assumed that compactor thread will take a lock on both
// entry as well as DiskID while compacting. In case of synch
// mode we can
// safely set OplogID without taking lock on DiskId. But
// for asynch mode
// we have to take additional precaution as the asynch
// writer of previous
// oplog can interfere with the current oplog.
id.setOplogId(getOplogId());
// do the io while holding lock so that switch can set doneAppending
// Write the data to the opLog for the synch mode
startPosForSynchOp = writeOpLogBytes(this.crf, async, true);
// if (this.crf.currSize != startPosForSynchOp) {
// assert false;
// }
this.crf.currSize = temp;
if (EntryBits.isNeedsValue(userBits)) {
id.setValueLength(value.getLength());
} else {
id.setValueLength(0);
}
id.setUserBits(userBits);
if (logger.isTraceEnabled()) {
logger.trace("Oplog::basicCreate:Release dByteBuffer with data for Disk ID = {}", id);
}
// Asif: As such for any put or get operation , a synch is taken
// on the Entry object in the DiskEntry's Helper functions.
// Compactor thread will also take a lock on entry object. Therefore
// we do not require a lock on DiskID, as concurrent access for
// value will not occur.
startPosForSynchOp += getOpStateValueOffset();
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
VersionTag tag = null;
if (entry.getVersionStamp() != null) {
tag = entry.getVersionStamp().asVersionTag();
}
logger.trace(LogMarker.PERSIST_WRITES,
"basicCreate: id=<{}> key=<{}> valueOffset={} userBits={} valueLen={} valueBytes={} drId={} versionTag={} oplog#{}",
abs(id.getKeyId()), entry.getKey(), startPosForSynchOp, userBits, (value != null ? value.getLength() : 0),
value.getBytesAsString(), dr.getId(), tag, getOplogId());
}
id.setOffsetInOplog(startPosForSynchOp);
addLive(dr, entry);
// Size of the current oplog being increased
// due to 'create' operation. Set the change in stats.
this.dirHolder.incrementTotalOplogSize(dataLength);
incTotalCount();
// Update the region version vector for the disk store.
// This needs to be done under lock so that we don't switch oplogs
// unit the version vector accurately represents what is in this oplog
RegionVersionVector rvv = dr.getRegionVersionVector();
if (rvv != null && entry.getVersionStamp() != null) {
rvv.recordVersion(entry.getVersionStamp().getMemberID(), entry.getVersionStamp().getRegionVersion());
}
EntryLogger.logPersistPut(dr.getName(), entry.getKey(), dr.getDiskStoreID());
}
clearOpState();
// }
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(this != getOplogSet().getChild());
getOplogSet().getChild().basicCreate(dr, entry, value, userBits, async);
} else {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSettingOplogOffSet(startPosForSynchOp);
}
}
}
private static byte[] TOMBSTONE_BYTES;
static {
try {
TOMBSTONE_BYTES = BlobHelper.serializeToBlob(Token.TOMBSTONE);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
/**
* This oplog will be forced to switch to a new oplog
*
*
* public void forceRolling() { if (getOplogSet().getChild() == this) {
* synchronized (this.lock) { if (getOplogSet().getChild() == this) {
* switchOpLog(0, null); } } if (!this.sync) {
* this.writer.activateThreadToTerminate(); } } }
*/
/**
* This oplog will be forced to switch to a new oplog
*/
void forceRolling(DiskRegion dr) {
if (getOplogSet().getChild() == this) {
synchronized (this.lock) {
if (getOplogSet().getChild() == this) {
switchOpLog(dr, 0, null);
}
}
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
}
}
/**
* Return true if it is possible that compaction of this oplog will be done.
*/
private boolean isCompactionPossible() {
return getOplogSet().isCompactionPossible();
}
/**
* Asif: This function is used to switch from one op Log to another , when the
* size of the current oplog has reached the maximum permissible. It is always
* called from synch block with lock object being the OpLog File object We
* will reuse the ByteBuffer Pool. We should add the current Oplog for
* compaction first & then try to get next directory holder as in case there
* is only a single directory with space being full, compaction has to happen
* before it can be given a new directory. If the operation causing the
* switching is on an Entry which already is referencing the oplog to be
* compacted, then the compactor thread will skip compaction that entry & the
* switching thread will roll the entry explicitly.
*
* @param lengthOfOperationCausingSwitch
* length of the operation causing the switch
* @param entryCausingSwitch
* DiskEntry object operation on which caused the switching of Oplog.
* This can be null if the switching has been invoked by the
* forceRolling which does not need an operation on entry to cause
* the switch
*/
private void switchOpLog(DiskRegionView dr, int lengthOfOperationCausingSwitch, DiskEntry entryCausingSwitch) {
String drName;
if (dr != null) {
drName = dr.getName();
} else {
drName = getParent().getName();
}
flushAll(); // needed in case of async
lengthOfOperationCausingSwitch += 20; // for worstcase overhead of writing
// first record
// if length of operation is greater than max Dir Size than an exception is
// thrown
if (logger.isDebugEnabled()) {
logger.debug("Oplog::switchOpLog: Entry causing Oplog switch has diskID={}",
(entryCausingSwitch != null ? entryCausingSwitch.getDiskId() : "Entry is null"));
}
if (lengthOfOperationCausingSwitch > getParent().getMaxDirSize()) {
throw new DiskAccessException(
LocalizedStrings.Oplog_OPERATION_SIZE_CANNOT_EXCEED_THE_MAXIMUM_DIRECTORY_SIZE_SWITCHING_PROBLEM_FOR_ENTRY_HAVING_DISKID_0
.toLocalizedString((entryCausingSwitch != null ? entryCausingSwitch.getDiskId().toString() : "\"null Entry\"")),
drName);
}
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().beforeSwitchingOplog();
}
if (logger.isDebugEnabled()) {
logger.debug("Oplog::switchOpLog: About to add the Oplog = {} for compaction. Entry causing the switch is having DiskID = {}",
this.oplogId, (entryCausingSwitch != null ? entryCausingSwitch.getDiskId() : "null Entry"));
}
if (needsCompaction()) {
addToBeCompacted();
} else {
getOplogSet().addInactive(this);
}
try {
DirectoryHolder nextDirHolder = getOplogSet().getNextDir(lengthOfOperationCausingSwitch, true);
Oplog newOplog = new Oplog(this.oplogId + 1, nextDirHolder, this);
newOplog.firstRecord = true;
getOplogSet().setChild(newOplog);
finishedAppending();
// Defer the unpreblow and close of the RAF. We saw pauses in testing from
// unpreblow of the drf, maybe because it is freeing pages that were
// preallocated. Close can pause if another thread is calling force on the
// file channel - see 50254. These operations should be safe to defer,
// a concurrent read will synchronize on the oplog and use or reopen the
// RAF
// as needed.
getParent().executeDelayedExpensiveWrite(new Runnable() {
public void run() {
// need to truncate crf and drf if their actual size is less than
// their pregrow size
unpreblow(Oplog.this.crf, getMaxCrfSize());
unpreblow(Oplog.this.drf, getMaxDrfSize());
// Close the crf using closeRAF. We will reopen the crf if we
// need it to fault in or to read values during compaction.
closeRAF();
// I think at this point the drf no longer needs to be open
synchronized (Oplog.this.lock/* drf */) {
if (!Oplog.this.drf.RAFClosed) {
try {
Oplog.this.drf.channel.close();
} catch (IOException ignore) {
}
try {
Oplog.this.drf.raf.close();
} catch (IOException ignore) {
}
Oplog.this.drf.RAFClosed = true;
}
}
}
});
// offline compaction will not execute create Krf in the task, becasue
// this.totalLiveCount.get() == 0
if (getParent().isOfflineCompacting()) {
krfClose();
} else {
createKrfAsync();
}
} catch (DiskAccessException dae) {
// Asif: Remove the Oplog which was added in the DiskStoreImpl
// for compaction as compaction cannot be done.
// However, it is also possible that compactor
// may have done the compaction of the Oplog but the switching thread
// encountered timeout exception.
// So the code below may or may not actually
// ensure that the Oplog has been compacted or not.
getOplogSet().removeOplog(this.oplogId);
throw dae;
}
}
/**
* Schedule a task to create a krf asynchronously
*
*/
protected void createKrfAsync() {
getParent().executeDiskStoreTask(new Runnable() {
public void run() {
createKrf(false);
}
});
}
/**
* Used when creating a KRF to keep track of what DiskRegionView a DiskEntry
* belongs to.
*/
private static class KRFEntry {
private final DiskEntry de;
private final DiskRegionView drv;
/**
* Fix for 42733 - a stable snapshot of the offset so we can sort It doesn't
* matter that this is stale, we'll filter out these entries later.
*/
private final long offsetInOplog;
private VersionHolder versionTag;
public KRFEntry(DiskRegionView drv, DiskEntry de, VersionHolder tag) {
this.de = de;
this.drv = drv;
DiskId diskId = de.getDiskId();
this.offsetInOplog = diskId != null ? diskId.getOffsetInOplog() : 0;
this.versionTag = tag;
}
public DiskEntry getDiskEntry() {
return this.de;
}
public DiskRegionView getDiskRegionView() {
return this.drv;
}
public long getOffsetInOplogForSorting() {
return offsetInOplog;
}
}
private void writeOneKeyEntryForKRF(KRFEntry ke) throws IOException {
DiskEntry de = ke.getDiskEntry();
long diskRegionId = ke.getDiskRegionView().getId();
long oplogKeyId;
byte userBits;
long valueOffset;
int valueLength;
Object deKey;
VersionHolder tag = ke.versionTag;
synchronized (de) {
DiskId di = de.getDiskId();
if (di == null) {
return;
}
if (de.isRemovedFromDisk()) {
// the entry was concurrently removed
return;
}
synchronized (di) {
// Make sure each one is still in this oplog.
if (di.getOplogId() != getOplogId()) {
return;
}
userBits = di.getUserBits();
oplogKeyId = Math.abs(di.getKeyId());
valueOffset = di.getOffsetInOplog();
valueLength = di.getValueLength();
deKey = de.getKey();
if (valueOffset < 0) {
assert (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits));
}
}
if (tag == null) {
if (EntryBits.isWithVersions(userBits) && de.getVersionStamp() != null) {
tag = de.getVersionStamp().asVersionTag();
} else if (de.getVersionStamp() != null) {
throw new AssertionError("No version bits on entry we're writing to the krf " + de);
}
}
}
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
logger.trace(LogMarker.PERSIST_WRITES,
"krf oplogId={} key={} oplogKeyId={} de={} vo={} vl={} diskRegionId={} version tag={}", oplogId, deKey, oplogKeyId,
System.identityHashCode(de), valueOffset, valueLength, diskRegionId, tag);
}
byte[] keyBytes = EntryEventImpl.serialize(deKey);
// skip the invalid entries, theire valueOffset is -1
writeOneKeyEntryForKRF(keyBytes, userBits, valueLength, diskRegionId, oplogKeyId, valueOffset, tag);
}
private void writeOneKeyEntryForKRF(byte[] keyBytes, byte userBits, int valueLength, long diskRegionId, long oplogKeyId,
long valueOffset, VersionHolder tag) throws IOException {
if (getParent().isValidating()) {
return;
}
if (!getParent().isOfflineCompacting()) {
assert (this.krf.dos != null);
} else {
if (this.krf.dos == null) {
// krf already exist, thus not re-opened for write
return;
}
}
DataSerializer.writeByteArray(keyBytes, this.krf.dos);
this.krf.dos.writeByte(EntryBits.getPersistentBits(userBits));
InternalDataSerializer.writeArrayLength(valueLength, this.krf.dos);
DiskInitFile.writeDiskRegionID(this.krf.dos, diskRegionId);
if (EntryBits.isWithVersions(userBits) && tag != null) {
serializeVersionTag(tag, this.krf.dos);
}
InternalDataSerializer.writeVLOld(oplogKeyId, this.krf.dos);
// skip the invalid entries, theire valueOffset is -1
if (!EntryBits.isAnyInvalid(userBits) && !EntryBits.isTombstone(userBits)) {
InternalDataSerializer.writeVLOld((valueOffset - this.krf.lastOffset), this.krf.dos);
// save the lastOffset in krf object
this.krf.lastOffset = valueOffset;
}
this.krf.keyNum++;
}
private final AtomicBoolean krfCreated = new AtomicBoolean();
public void krfFileCreate() throws IOException {
// this method is only used by offline compaction. validating will not
// create krf
assert (getParent().isValidating() == false);
this.krf.f = new File(this.diskFile.getPath() + KRF_FILE_EXT);
if (this.krf.f.exists()) {
throw new IllegalStateException("krf file " + this.krf.f + " already exists.");
}
this.krf.fos = new FileOutputStream(this.krf.f);
this.krf.bos = new BufferedOutputStream(this.krf.fos, 32768);
this.krf.dos = new DataOutputStream(this.krf.bos);
// write oplog magic seq
this.krf.dos.writeByte(OPLOG_MAGIC_SEQ_ID);
this.krf.dos.write(Oplog.OPLOG_TYPE.KRF.getBytes(), 0, Oplog.OPLOG_TYPE.getLen());
this.krf.dos.writeByte(END_OF_RECORD_ID);
// write the disk store id to the krf
this.krf.dos.writeByte(OPLOG_DISK_STORE_ID);
this.krf.dos.writeLong(getParent().getDiskStoreID().getLeastSignificantBits());
this.krf.dos.writeLong(getParent().getDiskStoreID().getMostSignificantBits());
this.krf.dos.writeByte(END_OF_RECORD_ID);
// write product versions
assert this.gfversion != null;
// write both gemfire and data versions if the two are different else write
// only gemfire version; a token distinguishes the two cases while reading
// like in writeGemFireVersionRecord
Version dataVersion = getDataVersionIfOld();
if (dataVersion == null) {
dataVersion = Version.CURRENT;
}
if (this.gfversion == dataVersion) {
this.gfversion.writeOrdinal(this.krf.dos, false);
} else {
Version.TOKEN.writeOrdinal(this.krf.dos, false);
this.krf.dos.writeByte(END_OF_RECORD_ID);
this.krf.dos.writeByte(OPLOG_GEMFIRE_VERSION);
this.gfversion.writeOrdinal(this.krf.dos, false);
this.krf.dos.writeByte(END_OF_RECORD_ID);
this.krf.dos.writeByte(OPLOG_GEMFIRE_VERSION);
dataVersion.writeOrdinal(this.krf.dos, false);
}
this.krf.dos.writeByte(END_OF_RECORD_ID);
// Write the total entry count to the krf so that when we recover,
// our compaction statistics will be accurate
InternalDataSerializer.writeUnsignedVL(this.totalCount.get(), this.krf.dos);
this.krf.dos.writeByte(END_OF_RECORD_ID);
// Write the RVV to the krf.
Map<Long, AbstractDiskRegion> drMap = getParent().getAllDiskRegions();
byte[] rvvBytes = serializeRVVs(drMap, false);
this.krf.dos.write(rvvBytes);
this.krf.dos.writeByte(END_OF_RECORD_ID);
}
// if IOException happened during krf creation, close and delete it
private void closeAndDeleteKrf() {
try {
if (this.krf.dos != null) {
this.krf.dos.close();
this.krf.dos = null;
}
} catch (IOException ignore) {
}
try {
if (this.krf.bos != null) {
this.krf.bos.close();
this.krf.bos = null;
}
} catch (IOException ignore) {
}
try {
if (this.krf.fos != null) {
this.krf.fos.close();
this.krf.fos = null;
}
} catch (IOException ignore) {
}
if (this.krf.f.exists()) {
this.krf.f.delete();
}
}
public void krfClose() {
boolean allClosed = false;
try {
if (this.krf.fos != null) {
DataSerializer.writeByteArray(null, this.krf.dos);
} else {
return;
}
this.krf.dos.flush();
this.krf.fos.getChannel().force(true);
this.krf.dos.close();
this.krf.dos = null;
this.krf.bos.close();
this.krf.bos = null;
this.krf.fos.close();
this.krf.fos = null;
if (this.krf.keyNum == 0) {
// this is an empty krf file
this.krf.f.delete();
assert this.krf.f.exists() == false;
} else {
// Mark that this krf is complete.
getParent().getDiskInitFile().krfCreate(this.oplogId);
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_CREATE_0_1_2, new Object[] { toString(), "krf",
getParent().getName() }));
}
allClosed = true;
} catch (IOException e) {
// TODO Auto-generated catch block
if (getParent().getDiskAccessException() == null) {
throw new DiskAccessException("Fail to close krf file " + this.krf.f, e, getParent());
} else {
logger.info("Fail to close krf file " + this.krf.f+", but a DiskAccessException happened ealier", getParent().getDiskAccessException());
}
} finally {
if (!allClosed) {
// IOException happened during close, delete this krf
closeAndDeleteKrf();
}
}
}
/**
* Create the KRF file for this oplog. It is ok for this method to be async.
* finishKRF will be called and it must block until KRF generation is
* complete.
*
* @param cancel
* if true then prevent the krf from being created if possible
*/
void createKrf(boolean cancel) {
if (cancel) {
this.krfCreated.compareAndSet(false, true);
return;
}
if (!couldHaveKrf()) {
return;
}
// Make sure regions can not become unrecovered while creating the KRF.
getParent().acquireCompactorReadLock();
try {
if (!getParent().allowKrfCreation()) {
return;
}
lockCompactor();
try {
synchronized (this.lock) {
// 42733: after set it to true, we will not reset it, since this oplog
// will be
// inactive forever
this.lockedForKRFcreate = true;
}
synchronized (this.krfCreated) {
if (this.krfCreated.get()) {
return;
}
this.krfCreated.set(true);
if (this.unrecoveredRegionCount.get() > 0) {
// if we have unrecovered regions then we can't create
// a KRF because we don't have the list of live entries.
return;
}
int tlc = (int) this.totalLiveCount.get();
if (tlc <= 0) {
// no need to create a KRF since this oplog will be deleted.
// TODO should we create an empty KRF anyway?
return;
}
Collection<DiskRegionInfo> regions = this.regionMap.values();
List<KRFEntry> sortedLiveEntries = getSortedLiveEntries(regions);
if (sortedLiveEntries == null) {
// no need to create a krf if there are no live entries.
return;
}
boolean krfCreateSuccess = false;
try {
krfFileCreate();
// sortedLiveEntries are now sorted
// so we can start writing them to disk.
for (KRFEntry ke : sortedLiveEntries) {
writeOneKeyEntryForKRF(ke);
}
krfClose();
krfCreateSuccess = true;
for (DiskRegionInfo dri : regions) {
dri.afterKrfCreated();
}
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterKrfCreated();
}
} catch (FileNotFoundException ex) {
// TODO handle exception; we couldn't open the krf file
throw new IllegalStateException("could not create krf " + this.krf.f, ex);
} catch (IOException ex) {
// TODO handle io exceptions; we failed to write to the file
throw new IllegalStateException("failed writing krf " + this.krf.f, ex);
} finally {
// if IOException happened in writeOneKeyEntryForKRF(), delete krf
// here
if (!krfCreateSuccess) {
closeAndDeleteKrf();
}
}
}
} finally {
unlockCompactor();
}
} finally {
getParent().releaseCompactorReadLock();
}
}
private File getKrfFile() {
return new File(this.diskFile.getPath() + KRF_FILE_EXT);
}
public List<KRFEntry> getSortedLiveEntries(Collection<DiskRegionInfo> targetRegions) {
int tlc = (int) this.totalLiveCount.get();
if (tlc <= 0) {
// no need to create a KRF since this oplog will be deleted.
// TODO should we create an empty KRF anyway?
return null;
}
KRFEntry[] sortedLiveEntries = new KRFEntry[tlc];
int idx = 0;
for (DiskRegionInfo dri : targetRegions) {
if (dri.getDiskRegion() != null) {
idx = dri.addLiveEntriesToList(sortedLiveEntries, idx);
}
}
// idx is now the length of sortedLiveEntries
Arrays.sort(sortedLiveEntries, 0, idx, new Comparator<KRFEntry>() {
public int compare(KRFEntry o1, KRFEntry o2) {
long val1 = o1.getOffsetInOplogForSorting();
long val2 = o2.getOffsetInOplogForSorting();
return Long.signum(val1 - val2);
}
});
return Arrays.asList(sortedLiveEntries).subList(0, idx);
}
/**
* Asif:This function retrieves the value for an entry being compacted subject
* to entry referencing the oplog being compacted. Attempt is made to retrieve
* the value from in memory , if available, else from asynch buffers ( if
* asynch mode is enabled), else from the Oplog being compacted. It is invoked
* from switchOplog as well as OplogCompactor's compact function.
*
* @param entry
* DiskEntry being compacted referencing the Oplog being compacted
* @param wrapper
* Object of type BytesAndBitsForCompactor. The data if found is set
* in the wrapper Object. The wrapper Object also contains the user
* bit associated with the entry
* @return boolean false indicating that entry need not be compacted. If true
* it means that wrapper has been appropriately filled with data
*/
private boolean getBytesAndBitsForCompaction(DiskRegionView dr, DiskEntry entry, BytesAndBitsForCompactor wrapper) {
// caller is synced on did
DiskId did = entry.getDiskId();
byte userBits = 0;
long oplogOffset = did.getOffsetInOplog();
SimpleMemoryAllocatorImpl.skipRefCountTracking();
// TODO OFFHEAP: no need to retain. We just use it while we have the RegionEntry synced.
@Retained @Released Object value = entry._getValueRetain(dr, true);
SimpleMemoryAllocatorImpl.unskipRefCountTracking();
// TODO:KIRK:OK Object value = entry.getValueWithContext(dr);
boolean foundData = false;
if (value == null) {
// Asif: If the mode is synch it is guaranteed to be present in the disk
foundData = basicGetForCompactor(dr, oplogOffset, false, did.getValueLength(), did.getUserBits(), wrapper);
// after we have done the get do one more check to see if the
// disk id of interest is still stored in the current oplog.
// Do this to fix bug 40648
// Since we now call this with the diskId synced I think
// it is impossible for this oplogId to change.
if (did.getOplogId() != getOplogId()) {
// if it is not then no need to compact it
return false;
} else {
// if the disk id indicates its most recent value is in oplogInFocus
// then we should have found data
assert foundData : "compactor get failed on oplog#" + getOplogId();
}
userBits = wrapper.getBits();
if (EntryBits.isAnyInvalid(userBits)) {
if (EntryBits.isInvalid(userBits)) {
wrapper.setData(DiskEntry.INVALID_BYTES, userBits, DiskEntry.INVALID_BYTES.length, false/*
* Can
* not
* be
* reused
*/);
} else {
wrapper.setData(DiskEntry.LOCAL_INVALID_BYTES, userBits, DiskEntry.LOCAL_INVALID_BYTES.length, false/*
* Can
* not
* be
* reused
*/);
}
} else if (EntryBits.isTombstone(userBits)) {
wrapper.setData(DiskEntry.TOMBSTONE_BYTES, userBits, DiskEntry.TOMBSTONE_BYTES.length, false/*
* Can
* not
* be
* reused
*/);
}
if (EntryBits.isWithVersions(did.getUserBits())) {
userBits = EntryBits.setWithVersions(userBits, true);
}
} else {
foundData = true;
userBits = 0;
if (EntryBits.isRecoveredFromDisk(did.getUserBits())) {
userBits = EntryBits.setRecoveredFromDisk(userBits, true);
}
if (EntryBits.isWithVersions(did.getUserBits())) {
userBits = EntryBits.setWithVersions(userBits, true);
}
// no need to preserve pendingAsync bit since we will clear it anyway
// since we
// (the compactor) are writing the value out to disk.
if (value == Token.INVALID) {
userBits = EntryBits.setInvalid(userBits, true);
wrapper.setData(DiskEntry.INVALID_BYTES, userBits, DiskEntry.INVALID_BYTES.length, false /*
* Cannot
* be
* reused
*/);
} else if (value == Token.LOCAL_INVALID) {
userBits = EntryBits.setLocalInvalid(userBits, true);
wrapper.setData(DiskEntry.LOCAL_INVALID_BYTES, userBits, DiskEntry.LOCAL_INVALID_BYTES.length, false /*
* Cannot
* be
* reused
*/);
} else if (value == Token.TOMBSTONE) {
userBits = EntryBits.setTombstone(userBits, true);
wrapper.setData(DiskEntry.TOMBSTONE_BYTES, userBits, DiskEntry.TOMBSTONE_BYTES.length, false /*
* Cannot
* be
* reused
*/);
} else if (value instanceof CachedDeserializable) {
CachedDeserializable proxy = (CachedDeserializable) value;
if (proxy instanceof StoredObject) {
@Released StoredObject ohproxy = (StoredObject) proxy;
try {
ohproxy.fillSerializedValue(wrapper, userBits);
} finally {
OffHeapHelper.releaseWithNoTracking(ohproxy);
}
} else {
userBits = EntryBits.setSerialized(userBits, true);
proxy.fillSerializedValue(wrapper, userBits);
}
} else if (value instanceof byte[]) {
byte[] valueBytes = (byte[]) value;
// Asif: If the value is already a byte array then the user bit
// is 0, which is the default value of the userBits variable,
// indicating that it is non serialized data. Thus it is
// to be used as it is & not to be deserialized to
// convert into Object
wrapper.setData(valueBytes, userBits, valueBytes.length, false /*
* the
* wrapper
* is not
* reusable
*/);
} else if (Token.isRemoved(value) && value != Token.TOMBSTONE) {
// TODO - RVV - We need to handle tombstones differently here!
if (entry.getDiskId().isPendingAsync()) {
entry.getDiskId().setPendingAsync(false);
try {
getOplogSet().getChild().basicRemove(dr, entry, false, false);
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()), ex, dr.getName());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
getParent().getCache().getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, dr.getName());
}
} else {
rmLive(dr, entry);
}
foundData = false;
} else {
userBits = EntryBits.setSerialized(userBits, true);
EntryEventImpl.fillSerializedValue(wrapper, value, userBits);
}
}
if (foundData) {
// since the compactor is writing it out clear the async flag
entry.getDiskId().setPendingAsync(false);
}
return foundData;
}
/**
* Modifies a key/value pair from a region entry on disk. Updates all of the
* necessary {@linkplain DiskStoreStats statistics} and invokes basicModify
*
* @param entry
* DiskEntry object representing the current Entry
*
* @param value
* byte array representing the value
* @throws DiskAccessException
* @throws IllegalStateException
*/
/*
* Asif: Modified the code so as to reuse the already created ByteBuffer
* during transition. Minimizing the synchronization allowing multiple put
* operations for different entries to proceed concurrently for asynch mode
*/
public final void modify(LocalRegion region, DiskEntry entry, ValueWrapper value, boolean async) {
if (getOplogSet().getChild() != this) {
getOplogSet().getChild().modify(region, entry, value, async);
} else {
DiskId did = entry.getDiskId();
boolean exceptionOccured = false;
byte prevUsrBit = did.getUserBits();
int len = did.getValueLength();
try {
byte userBits = calcUserBits(value);
// save versions for creates and updates even if value is bytearrary in
// 7.0
if (entry.getVersionStamp() != null) {
if (entry.getVersionStamp().getMemberID() == null) {
throw new AssertionError("Version stamp should have a member at this point for entry " + entry);
}
// pdx and tx will not use version
userBits = EntryBits.setWithVersions(userBits, true);
}
basicModify(region.getDiskRegion(), entry, value, userBits, async, false);
} catch (IOException ex) {
exceptionOccured = true;
region.getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()),
ex, region.getFullPath());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
exceptionOccured = true;
region.getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, region.getFullPath());
} finally {
if (exceptionOccured) {
did.setValueLength(len);
did.setUserBits(prevUsrBit);
}
}
}
}
public void offlineModify(DiskRegionView drv, DiskEntry entry, byte[] value,
boolean isSerializedObject) {
try {
ValueWrapper vw = new DiskEntry.Helper.ByteArrayValueWrapper(isSerializedObject, value);
byte userBits = calcUserBits(vw);
// save versions for creates and updates even if value is bytearrary in 7.0
VersionStamp vs = entry.getVersionStamp();
if (vs != null) {
if (vs.getMemberID() == null) {
throw new AssertionError("Version stamp should have a member at this point for entry " + entry);
}
// Since we are modifying this entry's value while offline make sure its version stamp
// has this disk store as its member id and bump the version
vs.setMemberID(getParent().getDiskStoreID());
VersionTag vt = vs.asVersionTag();
vt.setRegionVersion(drv.getRegionVersionVector().getNextVersion());
vt.setEntryVersion(vt.getEntryVersion()+1);
vt.setVersionTimeStamp(System.currentTimeMillis());
vs.setVersions(vt);
userBits = EntryBits.setWithVersions(userBits, true);
}
basicModify(drv, entry, vw, userBits, false, false);
} catch (IOException ex) {
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()), ex, drv.getName());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, drv.getName());
}
}
public final void saveConflictVersionTag(LocalRegion region, VersionTag tag, boolean async) {
if (getOplogSet().getChild() != this) {
getOplogSet().getChild().saveConflictVersionTag(region, tag, async);
} else {
try {
basicSaveConflictVersionTag(region.getDiskRegion(), tag, async);
} catch (IOException ex) {
region.getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_CONFLICT_VERSION_TAG_0.toLocalizedString(this.diskFile
.getPath()), ex, region.getFullPath());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
region.getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_CONFLICT_VERSION_TAG_0.toLocalizedString(this.diskFile
.getPath()), ie, region.getFullPath());
}
}
}
private final void copyForwardForOfflineCompact(long oplogKeyId, byte[] keyBytes, byte[] valueBytes, byte userBits, long drId,
VersionTag tag) {
try {
basicCopyForwardForOfflineCompact(oplogKeyId, keyBytes, valueBytes, userBits, drId, tag);
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()), ex,
getParent());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
getParent().getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, getParent());
}
}
private final void copyForwardModifyForCompact(DiskRegionView dr, DiskEntry entry, BytesAndBitsForCompactor wrapper) {
if (getOplogSet().getChild() != this) {
getOplogSet().getChild().copyForwardModifyForCompact(dr, entry, wrapper);
} else {
DiskId did = entry.getDiskId();
boolean exceptionOccured = false;
int len = did.getValueLength();
try {
// TODO: compaction needs to get version?
byte userBits = wrapper.getBits();
ValueWrapper vw;
if (wrapper.getDataChunk() != null) {
vw = new DiskEntry.Helper.ChunkValueWrapper(wrapper.getDataChunk());
} else {
vw = new DiskEntry.Helper.CompactorValueWrapper(wrapper.getBytes(), wrapper.getValidLength());
}
// Compactor always says to do an async basicModify so that its writes
// will be grouped. This is not a true async write; just a grouped one.
basicModify(dr, entry, vw, userBits, true, true);
} catch (IOException ex) {
exceptionOccured = true;
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()),
ex, getParent());
} catch (InterruptedException ie) {
exceptionOccured = true;
Thread.currentThread().interrupt();
getParent().getCancelCriterion().checkCancelInProgress(ie);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, getParent());
} finally {
if (wrapper.getDataChunk() != null) {
wrapper.setChunkData(null, (byte) 0);
}
if (exceptionOccured) {
did.setValueLength(len);
}
}
}
}
/**
* Asif: A helper function which identifies whether to modify the entry in the
* current oplog or to make the switch to the next oplog. This function
* enables us to reuse the byte buffer which got created for an oplog which no
* longer permits us to use itself. It will also take acre of compaction if
* required
*
* @param entry
* DiskEntry object representing the current Entry
* @throws IOException
* @throws InterruptedException
*/
private void basicModify(DiskRegionView dr, DiskEntry entry, ValueWrapper value, byte userBits, boolean async,
boolean calledByCompactor) throws IOException, InterruptedException {
DiskId id = entry.getDiskId();
boolean useNextOplog = false;
long startPosForSynchOp = -1L;
int adjustment = 0;
Oplog emptyOplog = null;
if (DiskStoreImpl.KRF_DEBUG) {
// wait for cache close to create krf
System.out.println("basicModify KRF_DEBUG");
Thread.sleep(1000);
}
synchronized (this.lock) {
// synchronized (this.crf) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else {
initOpState(OPLOG_MOD_ENTRY_1ID, dr, entry, value, userBits, false);
adjustment = getOpStateSize();
assert adjustment > 0;
long temp = (this.crf.currSize + adjustment);
if (temp > getMaxCrfSize() && !isFirstRecord()) {
switchOpLog(dr, adjustment, entry);
// we can't reuse it since it contains variable length data
useNextOplog = true;
} else {
if (this.lockedForKRFcreate) {
CacheClosedException cce = new CacheClosedException("The disk store is closed.");
dr.getCancelCriterion().checkCancelInProgress(cce);
throw cce;
}
this.firstRecord = false;
long oldOplogId;
// do the io while holding lock so that switch can set doneAppending
// Write the data to the opLog for the synch mode
startPosForSynchOp = writeOpLogBytes(this.crf, async, true);
this.crf.currSize = temp;
startPosForSynchOp += getOpStateValueOffset();
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
VersionTag tag = null;
if (entry.getVersionStamp() != null) {
tag = entry.getVersionStamp().asVersionTag();
}
logger.trace(LogMarker.PERSIST_WRITES,
"basicModify: id=<{}> key=<{}> valueOffset={} userBits={} valueLen={} valueBytes=<{}> drId={} versionStamp={} oplog#{}",
abs(id.getKeyId()), entry.getKey(), startPosForSynchOp, userBits, value.getLength(), value.getBytesAsString(),
dr.getId(), tag, getOplogId());
}
if (EntryBits.isNeedsValue(userBits)) {
id.setValueLength(value.getLength());
} else {
id.setValueLength(0);
}
id.setUserBits(userBits);
if (logger.isTraceEnabled()) {
logger.trace("Oplog::basicModify:Released ByteBuffer with data for Disk ID = {}", id);
}
synchronized (id) {
// Need to do this while synced on id
// now that we compact forward to most recent oplog.
// @todo darrel: The sync logic in the disk code is so complex
// a really doubt is is correct.
// I think we need to do a fresh rewrite of it.
oldOplogId = id.setOplogId(getOplogId());
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits)) {
id.setOffsetInOplog(-1);
} else {
id.setOffsetInOplog(startPosForSynchOp);
}
}
// Set the oplog size change for stats
this.dirHolder.incrementTotalOplogSize(adjustment);
this.incTotalCount();
EntryLogger.logPersistPut(dr.getName(), entry.getKey(), dr.getDiskStoreID());
if (oldOplogId != getOplogId()) {
Oplog oldOplog = getOplogSet().getChild(oldOplogId);
if (oldOplog != null) {
oldOplog.rmLive(dr, entry);
emptyOplog = oldOplog;
}
addLive(dr, entry);
// Note if this mod was done to oldOplog then this entry is already
// in
// the linked list. All we needed to do in this case is call
// incTotalCount
} else {
getOrCreateDRI(dr).update(entry);
}
// Update the region version vector for the disk store.
// This needs to be done under lock so that we don't switch oplogs
// unit the version vector accurately represents what is in this oplog
RegionVersionVector rvv = dr.getRegionVersionVector();
if (rvv != null && entry.getVersionStamp() != null) {
rvv.recordVersion(entry.getVersionStamp().getMemberID(), entry.getVersionStamp().getRegionVersion());
}
}
clearOpState();
}
// }
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(getOplogSet().getChild() != this);
getOplogSet().getChild().basicModify(dr, entry, value, userBits, async, calledByCompactor);
} else {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSettingOplogOffSet(startPosForSynchOp);
}
if (emptyOplog != null && (!emptyOplog.isCompacting() || emptyOplog.calledByCompactorThread())) {
if (calledByCompactor && emptyOplog.hasNoLiveValues()) {
// Since compactor will only append to crf no need to flush drf.
// Before we have the compactor delete an oplog it has emptied out
// we want to have it flush anything it has written to the current
// oplog.
// Note that since sync writes may be done to the same oplog we are
// doing
// async writes to any sync writes will cause a flush to be done
// immediately.
flushAll(true);
}
emptyOplog.handleNoLiveValues();
}
}
}
private void basicSaveConflictVersionTag(DiskRegionView dr, VersionTag tag, boolean async) throws IOException,
InterruptedException {
boolean useNextOplog = false;
int adjustment = 0;
synchronized (this.lock) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else {
this.opState.initialize(OPLOG_CONFLICT_VERSION, dr.getId(), tag);
adjustment = getOpStateSize();
assert adjustment > 0;
long temp = (this.crf.currSize + adjustment);
if (temp > getMaxCrfSize() && !isFirstRecord()) {
switchOpLog(dr, adjustment, null);
// we can't reuse it since it contains variable length data
useNextOplog = true;
} else {
if (this.lockedForKRFcreate) {
CacheClosedException cce = new CacheClosedException("The disk store is closed.");
dr.getCancelCriterion().checkCancelInProgress(cce);
throw cce;
}
this.firstRecord = false;
writeOpLogBytes(this.crf, async, true);
this.crf.currSize = temp;
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
logger.trace(LogMarker.PERSIST_WRITES, "basicSaveConflictVersionTag: drId={} versionStamp={} oplog#", dr.getId(), tag,
getOplogId());
}
this.dirHolder.incrementTotalOplogSize(adjustment);
// Update the region version vector for the disk store.
// This needs to be done under lock so that we don't switch oplogs
// unit the version vector accurately represents what is in this oplog
RegionVersionVector rvv = dr.getRegionVersionVector();
if (rvv != null && dr.getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
rvv.recordVersion(tag.getMemberID(), tag.getRegionVersion());
}
}
clearOpState();
}
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(getOplogSet().getChild() != this);
getOplogSet().getChild().basicSaveConflictVersionTag(dr, tag, async);
}
}
private void basicCopyForwardForOfflineCompact(long oplogKeyId, byte[] keyBytes, byte[] valueBytes, byte userBits, long drId,
VersionTag tag) throws IOException, InterruptedException {
boolean useNextOplog = false;
long startPosForSynchOp = -1L;
int adjustment = 0;
synchronized (this.lock) {
// synchronized (this.crf) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else {
this.opState.initialize(oplogKeyId, keyBytes, valueBytes, userBits, drId, tag, false);
adjustment = getOpStateSize();
assert adjustment > 0;
long temp = (this.crf.currSize + adjustment);
if (temp > getMaxCrfSize() && !isFirstRecord()) {
switchOpLog(null, adjustment, null);
// we can't reuse it since it contains variable length data
useNextOplog = true;
} else {
this.firstRecord = false;
// do the io while holding lock so that switch can set doneAppending
// Write the data to the opLog async since we are offline compacting
startPosForSynchOp = writeOpLogBytes(this.crf, true, true);
this.crf.currSize = temp;
startPosForSynchOp += getOpStateValueOffset();
getOplogSet().getChild().writeOneKeyEntryForKRF(keyBytes, userBits, valueBytes.length, drId, oplogKeyId,
startPosForSynchOp, tag);
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
logger.trace(LogMarker.PERSIST_WRITES,
"basicCopyForwardForOfflineCompact: id=<{}> keyBytes=<{}> valueOffset={} userBits={} valueLen={} valueBytes=<{}> drId={} oplog#{}",
oplogKeyId, baToString(keyBytes), startPosForSynchOp, userBits, valueBytes.length, baToString(valueBytes),
getOplogId());
}
this.dirHolder.incrementTotalOplogSize(adjustment);
this.incTotalCount();
}
clearOpState();
}
// }
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(getOplogSet().getChild() != this);
getOplogSet().getChild().basicCopyForwardForOfflineCompact(oplogKeyId, keyBytes, valueBytes, userBits, drId, tag);
}
}
private boolean isCompacting() {
return this.compacting;
}
private void addLive(DiskRegionView dr, DiskEntry de) {
getOrCreateDRI(dr).addLive(de);
incLiveCount();
}
private void rmLive(DiskRegionView dr, DiskEntry de) {
DiskRegionInfo dri = getOrCreateDRI(dr);
synchronized (dri) {
dri.rmLive(de, this);
}
}
private DiskRegionInfo getDRI(long drId) {
return this.regionMap.get(drId);
}
private DiskRegionInfo getDRI(DiskRegionView dr) {
return getDRI(dr.getId());
}
private DiskRegionInfo getOrCreateDRI(DiskRegionView dr) {
DiskRegionInfo dri = getDRI(dr);
if (dri == null) {
dri = (isCompactionPossible() || couldHaveKrf()) ? new DiskRegionInfoWithList(dr, couldHaveKrf(), this.krfCreated.get())
: new DiskRegionInfoNoList(dr);
DiskRegionInfo oldDri = this.regionMap.putIfAbsent(dr.getId(), dri);
if (oldDri != null) {
dri = oldDri;
}
}
return dri;
}
public boolean needsKrf() {
return couldHaveKrf() && !krfCreated.get();
}
/**
* @return true if this Oplog could end up having a KRF file.
*/
private boolean couldHaveKrf() {
return getOplogSet().couldHaveKrf();
}
private DiskRegionInfo getOrCreateDRI(long drId) {
DiskRegionInfo dri = getDRI(drId);
if (dri == null) {
dri = (isCompactionPossible() || couldHaveKrf()) ? new DiskRegionInfoWithList(null, couldHaveKrf(), this.krfCreated.get())
: new DiskRegionInfoNoList(null);
DiskRegionInfo oldDri = this.regionMap.putIfAbsent(drId, dri);
if (oldDri != null) {
dri = oldDri;
}
}
return dri;
}
/**
* Removes the key/value pair with the given id on disk.
*
* @param entry
* DiskEntry object on which remove operation is called
*/
public final void remove(LocalRegion region, DiskEntry entry, boolean async, boolean isClear) {
DiskRegion dr = region.getDiskRegion();
if (getOplogSet().getChild() != this) {
getOplogSet().getChild().remove(region, entry, async, isClear);
} else {
DiskId did = entry.getDiskId();
boolean exceptionOccured = false;
byte prevUsrBit = did.getUserBits();
int len = did.getValueLength();
try {
basicRemove(dr, entry, async, isClear);
} catch (IOException ex) {
exceptionOccured = true;
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()),
ex, dr.getName());
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
region.getCancelCriterion().checkCancelInProgress(ie);
exceptionOccured = true;
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0_DUE_TO_FAILURE_IN_ACQUIRING_READ_LOCK_FOR_ASYNCH_WRITING
.toLocalizedString(this.diskFile.getPath()), ie, dr.getName());
} finally {
if (exceptionOccured) {
did.setValueLength(len);
did.setUserBits(prevUsrBit);
}
}
}
}
/**
* Write the GC RVV for a single region to disk
*/
public final void writeGCRVV(DiskRegion dr) {
boolean useNextOplog = false;
synchronized (this.lock) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else {
try {
writeRVVRecord(this.drf, Collections.<Long, AbstractDiskRegion> singletonMap(dr.getId(), dr), true);
} catch (IOException ex) {
dr.getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_RECORDING_RVV_BECAUSE_OF_0.toLocalizedString(this.diskFile
.getPath()), ex, dr.getName());
}
}
}
if (useNextOplog) {
getOplogSet().getChild().writeGCRVV(dr);
} else {
DiskStoreObserver.endWriteGCRVV(dr);
}
}
/**
* There're 3 cases to use writeRVV: 1) endGII:
* DiskRegion.writeRVV(region=null, true), Oplog.writeRVV(true,null) 2)
* beginGII: DiskRegion.writeRVV(region=this, false),
* Oplog.writeRVV(false,sourceRVV!=null) 3) clear:
* DiskRegion.writeRVV(region=this, null),
* Oplog.writeRVV(null,sourceRVV!=null)
*/
public void writeRVV(DiskRegion dr, RegionVersionVector sourceRVV, Boolean isRVVTrusted) {
boolean useNextOplog = false;
synchronized (this.lock) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else {
try {
// We'll update the RVV of the disk region while holding the lock on
// the oplog,
// to make sure we don't switch oplogs while we're in the middle of
// this.
if (sourceRVV != null) {
dr.getRegionVersionVector().recordVersions(sourceRVV);
} else {
// it's original EndGII, not to write duplicate rvv if its trusted
if (dr.getRVVTrusted()) {
return;
}
}
if (isRVVTrusted != null) {
// isRVVTrusted == null means "as is"
dr.setRVVTrusted(isRVVTrusted);
}
writeRVVRecord(this.crf, Collections.<Long, AbstractDiskRegion> singletonMap(dr.getId(), dr), false);
} catch (IOException ex) {
dr.getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_RECORDING_RVV_BECAUSE_OF_0.toLocalizedString(this.diskFile
.getPath()), ex, dr.getName());
}
}
}
if (useNextOplog) {
getOplogSet().getChild().writeRVV(dr, sourceRVV, isRVVTrusted);
}
}
private long getMaxCrfSize() {
return this.maxCrfSize;
}
private long getMaxDrfSize() {
return this.maxDrfSize;
}
private void setMaxCrfDrfSize() {
int crfPct = Integer.getInteger("gemfire.CRF_MAX_PERCENTAGE", 90);
if (crfPct > 100 || crfPct < 0) {
crfPct = 90;
}
this.maxCrfSize = (long) (this.maxOplogSize * (crfPct / 100.0));
this.maxDrfSize = this.maxOplogSize - this.maxCrfSize;
}
/**
*
* Asif: A helper function which identifies whether to record a removal of
* entry in the current oplog or to make the switch to the next oplog. This
* function enables us to reuse the byte buffer which got created for an oplog
* which no longer permits us to use itself. It will also take acre of
* compaction if required
*
* @param entry
* DiskEntry object representing the current Entry
* @throws IOException
* @throws InterruptedException
*/
private void basicRemove(DiskRegionView dr, DiskEntry entry, boolean async, boolean isClear) throws IOException,
InterruptedException {
DiskId id = entry.getDiskId();
boolean useNextOplog = false;
long startPosForSynchOp = -1;
Oplog emptyOplog = null;
if (DiskStoreImpl.KRF_DEBUG) {
// wait for cache close to create krf
System.out.println("basicRemove KRF_DEBUG");
Thread.sleep(1000);
}
synchronized (this.lock) {
if (getOplogSet().getChild() != this) {
useNextOplog = true;
} else if ((this.drf.currSize + MAX_DELETE_ENTRY_RECORD_BYTES) > getMaxDrfSize() && !isFirstRecord()) {
switchOpLog(dr, MAX_DELETE_ENTRY_RECORD_BYTES, entry);
useNextOplog = true;
} else {
if (this.lockedForKRFcreate) {
CacheClosedException cce = new CacheClosedException("The disk store is closed.");
dr.getCancelCriterion().checkCancelInProgress(cce);
throw cce;
}
long oldOplogId = id.setOplogId(getOplogId());
if (!isClear) {
this.firstRecord = false;
// Ok now we can go ahead and find out its actual size
// This is the only place to set notToUseUserBits=true
initOpState(OPLOG_DEL_ENTRY_1ID, dr, entry, null, (byte) 0, true);
int adjustment = getOpStateSize();
this.drf.currSize += adjustment;
// do the io while holding lock so that switch can set doneAppending
if (logger.isTraceEnabled()) {
logger.trace(
"Oplog::basicRemove: Recording the Deletion of entry in the Oplog with id = {} The Oplog Disk ID for the entry being deleted = {} Mode is Synch",
getOplogId(), id);
}
// Write the data to the opLog for the synch mode
// @todo if we don't sync write destroys what will happen if
// we do 1. create k1 2. destroy k1 3. create k1?
// It would be possible for the crf to be flushed but not the drf.
// Then during recovery we will find identical keys with different
// entryIds.
// I think we can safely have drf writes be async as long as we flush
// the drf
// before we flush the crf.
// However we can't have removes by async if we are doing a sync write
// because we might be killed right after we do this write.
startPosForSynchOp = writeOpLogBytes(this.drf, async, true);
setHasDeletes(true);
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
logger.debug("basicRemove: id=<{}> key=<{}> drId={} oplog#{}", abs(id.getKeyId()), entry.getKey(), dr.getId(),
getOplogId());
}
// new RuntimeException("STACK"));
if (logger.isTraceEnabled()) {
logger.trace("Oplog::basicRemove:Released ByteBuffer for Disk ID = {}", id);
}
this.dirHolder.incrementTotalOplogSize(adjustment);
}
// Set the oplog size change for stats
id.setOffsetInOplog(-1);
EntryLogger.logPersistDestroy(dr.getName(), entry.getKey(), dr.getDiskStoreID());
{
Oplog rmOplog = null;
if (oldOplogId == getOplogId()) {
rmOplog = this;
} else {
rmOplog = getOplogSet().getChild(oldOplogId);
}
if (rmOplog != null) {
rmOplog.rmLive(dr, entry);
emptyOplog = rmOplog;
}
}
clearOpState();
}
}
if (useNextOplog) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSwitchingOplog();
}
Assert.assertTrue(getOplogSet().getChild() != this);
getOplogSet().getChild().basicRemove(dr, entry, async, isClear);
} else {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
CacheObserverHolder.getInstance().afterSettingOplogOffSet(startPosForSynchOp);
}
if (emptyOplog != null && (!emptyOplog.isCompacting() || emptyOplog.calledByCompactorThread())) {
emptyOplog.handleNoLiveValues();
}
}
}
// /**
// * This is only used for an assertion check.
// */
// private long lastWritePos = -1;
/**
* test hook
*/
public final ByteBuffer getWriteBuf() {
return this.crf.writeBuf;
}
private final void flushNoSync(OplogFile olf) throws IOException {
flushAllNoSync(false); // @todo
// flush(olf, false);
}
@Override
public void flush() throws IOException {
flushAllNoSync(false);
}
@Override
public void flush(ByteBuffer b1, ByteBuffer b2) throws IOException {
if (b1 == this.drf.writeBuf) {
flush(this.drf, b1, b2);
flush(this.crf, false);
} else {
flush(this.drf, false);
flush(this.crf, b1, b2);
}
}
private final void flushAndSync(OplogFile olf) throws IOException {
flushAll(false); // @todo
// flush(olf, true);
}
private final void flush(OplogFile olf, boolean doSync) throws IOException {
try {
synchronized (this.lock/* olf */) {
if (olf.RAFClosed) {
return;
}
ByteBuffer bb = olf.writeBuf;
if (bb != null && bb.position() != 0) {
bb.flip();
int flushed = 0;
do {
flushed += olf.channel.write(bb);
} while (bb.hasRemaining());
// update bytesFlushed after entire writeBuffer is flushed to fix bug
// 41201
olf.bytesFlushed += flushed;
bb.clear();
}
}
if (doSync) {
if (SYNC_WRITES) {
// Synch Meta Data as well as content
olf.channel.force(true);
}
}
} catch (ClosedChannelException ignore) {
// It is possible for a channel to be closed when our code does not
// explicitly call channel.close (when we will set RAFclosed).
// This can happen when a thread is doing an io op and is interrupted.
// That thread will see ClosedByInterruptException but it will also
// close the channel and then we will see ClosedChannelException.
}
}
private final void flush(OplogFile olf, ByteBuffer b1, ByteBuffer b2) throws IOException {
try {
synchronized (this.lock/* olf */) {
if (olf.RAFClosed) {
return;
}
this.bbArray[0] = b1;
this.bbArray[1] = b2;
b1.flip();
long flushed = olf.channel.write(this.bbArray);
this.bbArray[0] = null;
this.bbArray[1] = null;
// update bytesFlushed after entire writeBuffer is flushed to fix bug 41201
olf.bytesFlushed += flushed;
b1.clear();
}
} catch (ClosedChannelException ignore) {
// It is possible for a channel to be closed when our code does not
// explicitly call channel.close (when we will set RAFclosed).
// This can happen when a thread is doing an io op and is interrupted.
// That thread will see ClosedByInterruptException but it will also
// close the channel and then we will see ClosedChannelException.
}
}
public final void flushAll() {
flushAll(false);
}
public final void flushAllNoSync(boolean skipDrf) {
flushAll(skipDrf, false);
}
public final void flushAll(boolean skipDrf) {
flushAll(skipDrf, true/* doSync */);
}
public final void flushAll(boolean skipDrf, boolean doSync) {
try {
// if (!skipDrf) {
// @todo if skipDrf then only need to do drf if crf has flushable data
flush(this.drf, doSync);
// }
flush(this.crf, doSync);
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_WRITING_KEY_TO_0.toLocalizedString(this.diskFile.getPath()), ex,
getParent());
}
}
/**
* Asif: Since the ByteBuffer being writen to can have additional bytes which
* are used for extending the size of the file, it is necessary that the
* ByteBuffer provided should have limit which is set to the position till
* which it contains the actual bytes. If the mode is synched write then only
* we will write up to the capacity & opLogSpace variable have any meaning.
* For asynch mode it will be zero. Also this method must be synchronized on
* the file , whether we use synch or asynch write because the fault in
* operations can clash with the asynch writing. Write the specified bytes to
* the oplog. Note that since extending a file is expensive this code will
* possibly write OPLOG_EXTEND_SIZE zero bytes to reduce the number of times
* the file is extended.
*
*
* @param olf
* the file to write the bytes to
* @return The long offset at which the data present in the ByteBuffer gets
* written to
*/
private long writeOpLogBytes(OplogFile olf, boolean async, boolean doFlushIfSync) throws IOException {
long startPos = -1L;
synchronized (this.lock/* olf */) {
Assert.assertTrue(!this.doneAppending);
if (this.closed) {
Assert.assertTrue(false, "The Oplog " + this.oplogId + " for store " + getParent().getName()
+ " has been closed for synch mode while writing is going on. This should not happen");
}
// Asif : It is assumed that the file pointer is already at the
// appropriate position in the file so as to allow writing at the end.
// Any fault in operations will set the pointer back to the write
// location.
// Also it is only in case of synch writing, we are writing more
// than what is actually needed, we will have to reset the pointer.
// Also need to add in offset in writeBuf in case we are not flushing
// writeBuf
startPos = olf.channel.position() + olf.writeBuf.position();
// Assert.assertTrue(startPos > lastWritePos,
// "startPos=" + startPos +
// " was not > lastWritePos=" + lastWritePos);
long bytesWritten = this.opState.write(olf);
if (!async && doFlushIfSync) {
flushAndSync(olf);
}
getStats().incWrittenBytes(bytesWritten, async);
// // Moved the set of lastWritePos to after write
// // so if write throws an exception it will not be updated.
// // This fixes bug 40449.
// this.lastWritePos = startPos;
}
return startPos;
}
boolean isRAFOpen() {
return !this.crf.RAFClosed; // volatile read
}
private boolean okToReopen;
boolean closeRAF() {
if (this.beingRead)
return false;
synchronized (this.lock/* crf */) {
if (this.beingRead)
return false;
if (!this.doneAppending)
return false;
if (this.crf.RAFClosed) {
return false;
} else {
try {
this.crf.raf.close();
} catch (IOException ignore) {
}
this.crf.RAFClosed = true;
this.okToReopen = true;
this.stats.decOpenOplogs();
return true;
}
}
}
private volatile boolean beingRead;
/**
* If crfRAF has been closed then attempt to reopen the oplog for this read.
* Verify that this only happens when test methods are invoked.
*
* @return true if oplog file is open and can be read from; false if not
*/
private boolean reopenFileIfClosed() throws IOException {
synchronized (this.lock/* crf */) {
boolean result = !this.crf.RAFClosed;
if (!result && this.okToReopen) {
result = true;
this.crf.raf = new UninterruptibleRandomAccessFile(this.crf.f, "r");
this.stats.incOpenOplogs();
this.crf.RAFClosed = false;
this.okToReopen = false;
}
return result;
}
}
private BytesAndBits attemptGet(DiskRegionView dr, long offsetInOplog, boolean bitOnly, int valueLength, byte userBits)
throws IOException {
boolean didReopen = false;
boolean accessedInactive = false;
try {
synchronized (this.lock/* crf */) {
// if (this.closed || this.deleted.get()) {
// throw new DiskAccessException("attempting get on "
// + (this.deleted.get() ? "destroyed" : "closed")
// + " oplog #" + getOplogId(), this.owner);
// }
this.beingRead = true;
final long readPosition = offsetInOplog;
if (/*
* !getParent().isSync() since compactor groups writes &&
*/(readPosition + valueLength) > this.crf.bytesFlushed && !this.closed) {
flushAllNoSync(true); // fix for bug 41205
}
try {
UninterruptibleRandomAccessFile myRAF = null;
if (this.crf.RAFClosed) {
myRAF = new UninterruptibleRandomAccessFile(this.crf.f, "r");
this.stats.incOpenOplogs();
if (this.okToReopen) {
this.crf.RAFClosed = false;
this.okToReopen = false;
this.crf.raf = myRAF;
didReopen = true;
}
} else {
myRAF = this.crf.raf;
accessedInactive = true;
}
BytesAndBits bb = null;
try {
final long writePosition = (this.doneAppending) ? this.crf.bytesFlushed : myRAF.getFilePointer();
if ((readPosition + valueLength) > writePosition) {
throw new DiskAccessException(
LocalizedStrings.Oplog_TRIED_TO_SEEK_TO_0_BUT_THE_FILE_LENGTH_IS_1_OPLOG_FILE_OBJECT_USED_FOR_READING_2
.toLocalizedString(new Object[] { readPosition + valueLength, writePosition, this.crf.raf }), dr.getName());
} else if (readPosition < 0) {
throw new DiskAccessException(LocalizedStrings.Oplog_CANNOT_FIND_RECORD_0_WHEN_READING_FROM_1
.toLocalizedString(new Object[] { offsetInOplog, this.diskFile.getPath() }), dr.getName());
}
try {
myRAF.seek(readPosition);
this.stats.incOplogSeeks();
byte[] valueBytes = new byte[valueLength];
myRAF.readFully(valueBytes);
this.stats.incOplogReads();
bb = new BytesAndBits(valueBytes, userBits);
// also set the product version for an older product
final Version version = getProductVersionIfOld();
if (version != null) {
bb.setVersion(version);
}
} finally {
// if this oplog is no longer being appended to then don't waste
// disk io
if (!this.doneAppending) {
// by seeking back to writePosition
myRAF.seek(writePosition);
this.stats.incOplogSeeks();
}
}
return bb;
} finally {
if (myRAF != this.crf.raf) {
try {
myRAF.close();
} catch (IOException ignore) {
}
}
}
} finally {
this.beingRead = false;
// if (this.closed || this.deleted.get()) {
// throw new DiskAccessException("attempting get on "
// + (this.deleted.get() ? "destroyed" : "closed")
// + " oplog #" + getOplogId(), this.owner);
// }
}
} // sync
} finally {
if (accessedInactive) {
getOplogSet().inactiveAccessed(this);
} else if (didReopen) {
getOplogSet().inactiveReopened(this);
}
}
}
/**
* Asif: Extracts the Value byte array & UserBit from the OpLog
*
* @param offsetInOplog
* The starting position from which to read the data in the opLog
* @param bitOnly
* boolean indicating whether the value needs to be extracted along
* with the UserBit or not.
* @param valueLength
* The length of the byte array which represents the value
* @param userBits
* The userBits of the value.
* @return BytesAndBits object which wraps the extracted value & user bit
*/
private BytesAndBits basicGet(DiskRegionView dr, long offsetInOplog, boolean bitOnly, int valueLength, byte userBits) {
BytesAndBits bb = null;
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits) || bitOnly || valueLength == 0) {
if (EntryBits.isInvalid(userBits)) {
bb = new BytesAndBits(DiskEntry.INVALID_BYTES, userBits);
} else if (EntryBits.isTombstone(userBits)) {
bb = new BytesAndBits(DiskEntry.TOMBSTONE_BYTES, userBits);
} else {
bb = new BytesAndBits(DiskEntry.LOCAL_INVALID_BYTES, userBits);
}
} else {
if (offsetInOplog == -1)
return null;
try {
for (;;) {
dr.getCancelCriterion().checkCancelInProgress(null);
boolean interrupted = Thread.interrupted();
try {
bb = attemptGet(dr, offsetInOplog, bitOnly, valueLength, userBits);
break;
} catch (InterruptedIOException e) { // bug 39756
// ignore, we'll clear and retry.
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
} // for
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(
LocalizedStrings.Oplog_FAILED_READING_FROM_0_OPLOGID_1_OFFSET_BEING_READ_2_CURRENT_OPLOG_SIZE_3_ACTUAL_FILE_SIZE_4_IS_ASYNCH_MODE_5_IS_ASYNCH_WRITER_ALIVE_6
.toLocalizedString(new Object[] { this.diskFile.getPath(), Long.valueOf(this.oplogId), Long.valueOf(offsetInOplog),
Long.valueOf(this.crf.currSize), Long.valueOf(this.crf.bytesFlushed), Boolean.valueOf(!dr.isSync()),
Boolean.valueOf(false) }), ex, dr.getName());
} catch (IllegalStateException ex) {
checkClosed();
throw ex;
}
}
return bb;
}
/**
* Asif: Extracts the Value byte array & UserBit from the OpLog and inserts it
* in the wrapper Object of type BytesAndBitsForCompactor which is passed
*
* @param offsetInOplog
* The starting position from which to read the data in the opLog
* @param bitOnly
* boolean indicating whether the value needs to be extracted along
* with the UserBit or not.
* @param valueLength
* The length of the byte array which represents the value
* @param userBits
* The userBits of the value.
* @param wrapper
* Object of type BytesAndBitsForCompactor. The data is set in the
* wrapper Object. The wrapper Object also contains the user bit
* associated with the entry
* @return true if data is found false if not
*/
private boolean basicGetForCompactor(DiskRegionView dr, long offsetInOplog, boolean bitOnly, int valueLength, byte userBits,
BytesAndBitsForCompactor wrapper) {
if (EntryBits.isAnyInvalid(userBits) || EntryBits.isTombstone(userBits) || bitOnly || valueLength == 0) {
if (EntryBits.isInvalid(userBits)) {
wrapper.setData(DiskEntry.INVALID_BYTES, userBits, DiskEntry.INVALID_BYTES.length, false /*
* Cannot
* be
* reused
*/);
} else if (EntryBits.isTombstone(userBits)) {
wrapper.setData(DiskEntry.TOMBSTONE_BYTES, userBits, DiskEntry.TOMBSTONE_BYTES.length, false /*
* Cannot
* be
* reused
*/);
} else {
wrapper.setData(DiskEntry.LOCAL_INVALID_BYTES, userBits, DiskEntry.LOCAL_INVALID_BYTES.length, false /*
* Cannot
* be
* reused
*/);
}
} else {
try {
synchronized (this.lock/* crf */) {
final long readPosition = offsetInOplog;
if (/*
* !getParent().isSync() since compactor groups writes &&
*/(readPosition + valueLength) > this.crf.bytesFlushed && !this.closed) {
flushAllNoSync(true); // fix for bug 41205
}
if (!reopenFileIfClosed()) {
return false; // fix for bug 40648
}
final long writePosition = (this.doneAppending) ? this.crf.bytesFlushed : this.crf.raf.getFilePointer();
if ((readPosition + valueLength) > writePosition) {
throw new DiskAccessException(
LocalizedStrings.Oplog_TRIED_TO_SEEK_TO_0_BUT_THE_FILE_LENGTH_IS_1_OPLOG_FILE_OBJECT_USED_FOR_READING_2
.toLocalizedString(new Object[] { readPosition + valueLength, writePosition, this.crf.raf }), dr.getName());
} else if (readPosition < 0) {
throw new DiskAccessException(LocalizedStrings.Oplog_CANNOT_FIND_RECORD_0_WHEN_READING_FROM_1
.toLocalizedString(new Object[] { Long.valueOf(offsetInOplog), this.diskFile.getPath() }), dr.getName());
}
// if (this.closed || this.deleted.get()) {
// throw new DiskAccessException("attempting get on "
// + (this.deleted.get() ? "destroyed" : "closed")
// + " oplog #" + getOplogId(), this.owner);
// }
try {
this.crf.raf.seek(readPosition);
this.stats.incOplogSeeks();
byte[] valueBytes = null;
if (wrapper.getBytes().length < valueLength) {
valueBytes = new byte[valueLength];
this.crf.raf.readFully(valueBytes);
} else {
valueBytes = wrapper.getBytes();
this.crf.raf.readFully(valueBytes, 0, valueLength);
}
this.stats.incOplogReads();
wrapper.setData(valueBytes, userBits, valueLength, true);
} finally {
// if this oplog is no longer being appended to then don't waste
// disk io
if (!this.doneAppending) {
this.crf.raf.seek(writePosition);
this.stats.incOplogSeeks();
}
// if (this.closed || this.deleted.get()) {
// throw new DiskAccessException("attempting get on "
// + (this.deleted.get() ? "destroyed" : "closed")
// + " oplog #" + getOplogId(), this.owner);
// }
}
}
} catch (IOException ex) {
getParent().getCancelCriterion().checkCancelInProgress(ex);
throw new DiskAccessException(LocalizedStrings.Oplog_FAILED_READING_FROM_0_OPLOG_DETAILS_1_2_3_4_5_6
.toLocalizedString(new Object[] { this.diskFile.getPath(), Long.valueOf(this.oplogId), Long.valueOf(offsetInOplog),
Long.valueOf(this.crf.currSize), Long.valueOf(this.crf.bytesFlushed), Boolean.valueOf(/*
* !
* dr
* .
* isSync
* (
* )
* @
* todo
*/false),
Boolean.valueOf(false) }), ex, dr.getName());
} catch (IllegalStateException ex) {
checkClosed();
throw ex;
}
}
return true;
}
private final AtomicBoolean deleted = new AtomicBoolean();
/**
* deletes the oplog's file(s)
*/
void deleteFiles(boolean crfOnly) {
// try doing the removeOplog unconditionally since I'm see an infinite loop
// in destroyOldestReadyToCompact
boolean needsDestroy = this.deleted.compareAndSet(false, true);
if (needsDestroy) {
// I don't under stand why the compactor would have anything to do with
// an oplog file that we are removing from disk.
// So I'm commenting out the following if
// if (!isCompactionPossible()) {
// moved this from close to fix bug 40574
// If we get to the point that it is ok to close the file
// then we no longer need the parent to be able to find this
// oplog using its id so we can unregister it now.
// If compaction is possible then we need to leave this
// oplog registered with the parent and allow the compactor to unregister
// it.
// }
deleteCRF();
if (!crfOnly || !getHasDeletes()) {
setHasDeletes(false);
deleteDRF();
// no need to call removeDrf since parent removeOplog did it
// getParent().removeDrf(this);
// getParent().oplogSetRemove(this);
}
// Fix for bug 42495 - Don't remove the oplog from this list
// of oplogs until it has been removed from the init file. This guarantees
// that if the oplog is in the init file, the backup code can find it and
// try to back it up.
boolean addToDrfOnly = crfOnly && getHasDeletes();
getOplogSet().removeOplog(getOplogId(), true, addToDrfOnly ? this : null);
} else if (!crfOnly && getHasDeletes()) {
setHasDeletes(false);
deleteDRF();
getOplogSet().removeDrf(this);
// getParent().oplogSetRemove(this);
}
}
public void deleteCRF() {
oplogSet.crfDelete(this.oplogId);
DiskStoreBackup inProgressBackup = getParent().getInProgressBackup();
if (inProgressBackup == null || !inProgressBackup.deferCrfDelete(this)) {
deleteCRFFileOnly();
}
}
public void deleteCRFFileOnly() {
deleteFile(this.crf);
// replace .crf at the end with .krf
if (this.crf.f != null) {
final File krf = new File(this.crf.f.getAbsolutePath().replaceFirst("\\" + CRF_FILE_EXT + "$", KRF_FILE_EXT));
if (!krf.exists()) {
return;
}
getParent().executeDelayedExpensiveWrite(new Runnable() {
public void run() {
if (!krf.delete()) {
if (krf.exists()) {
logger.warn(LocalizedMessage.create(LocalizedStrings.Oplog_DELETE_FAIL_0_1_2, new Object[] { Oplog.this.toString(),
"krf", getParent().getName() }));
}
} else {
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_DELETE_0_1_2, new Object[] { Oplog.this.toString(), "krf",
getParent().getName() }));
}
}
});
}
}
public void deleteDRF() {
getOplogSet().drfDelete(this.oplogId);
DiskStoreBackup inProgressBackup = getParent().getInProgressBackup();
if (inProgressBackup == null || !inProgressBackup.deferDrfDelete(this)) {
deleteDRFFileOnly();
}
}
public void deleteDRFFileOnly() {
deleteFile(this.drf);
}
public void copyTo(File targetDir) throws IOException {
if (this.crf.f != null) { // fixes bug 43951
FileUtil.copy(this.crf.f, targetDir);
}
FileUtil.copy(this.drf.f, targetDir);
// this krf existence check fixes 45089
if (getParent().getDiskInitFile().hasKrf(this.oplogId)) {
FileUtil.copy(this.getKrfFile(), targetDir);
}
}
/**
* Returns "crf" or "drf".
*/
private static String getFileType(OplogFile olf) {
String name = olf.f.getName();
int index = name.lastIndexOf('.');
return name.substring(index + 1);
}
private void deleteFile(final OplogFile olf) {
synchronized (this.lock) {
if (olf.currSize != 0) {
this.dirHolder.decrementTotalOplogSize(olf.currSize);
olf.currSize = 0;
}
if (olf.f == null)
return;
if (!olf.f.exists())
return;
assert olf.RAFClosed == true;
if (!olf.RAFClosed || olf.raf != null) {
try {
olf.raf.close();
olf.RAFClosed = true;
} catch (IOException ignore) {
}
}
// Delete the file asynchronously. Based on perf testing, deletes
// can block at the filesystem level. See #50254
// It's safe to do this asynchronously, because we have already
// marked this file as deleted in the init file.
// Note - could we run out of disk space because the compaction thread is
// doing this and creating files? For a real fix, you probably need a
// bounded
// queue
getParent().executeDelayedExpensiveWrite(new Runnable() {
public void run() {
if (!olf.f.delete() && olf.f.exists()) {
logger.warn(LocalizedMessage.create(LocalizedStrings.Oplog_DELETE_FAIL_0_1_2, new Object[] { Oplog.this.toString(),
getFileType(olf), getParent().getName() }));
} else {
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_DELETE_0_1_2, new Object[] { Oplog.this.toString(),
getFileType(olf), getParent().getName() }));
}
}
});
}
}
/**
* Helper function for the test
*
* @return FileChannel object representing the Oplog
*/
UninterruptibleFileChannel getFileChannel()
{
return this.crf.channel;
}
DirectoryHolder getDirectoryHolder() {
return this.dirHolder;
}
/**
* The current size of Oplog. It may be less than the actual Oplog file size (
* in case of asynch writing as it also takes into account data present in
* asynch buffers which will get flushed in course of time o
*
* @return long value indicating the current size of the oplog.
*/
long getOplogSize() {
return this.crf.currSize + this.drf.currSize;
}
boolean isOplogEmpty() {
return this.crf.currSize <= (OPLOG_DISK_STORE_REC_SIZE + OPLOG_MAGIC_SEQ_REC_SIZE)
&& this.drf.currSize <= (OPLOG_DISK_STORE_REC_SIZE + OPLOG_MAGIC_SEQ_REC_SIZE);
}
void incLiveCount() {
this.totalLiveCount.incrementAndGet();
}
private void decLiveCount() {
this.totalLiveCount.decrementAndGet();
}
/**
* Return true if a record (crf or drf) has been added to this oplog
*/
boolean hasBeenUsed() {
return this.hasDeletes.get() || this.totalCount.get() > 0;
}
void incTotalCount() {
if (!isPhase2()) {
this.totalCount.incrementAndGet();
}
}
private void finishedAppending() {
synchronized (this.lock/* crf */) {
this.doneAppending = true;
}
handleNoLiveValues();
// I'm deadcoding the following because it is not safe unless we change to
// always recover values. If we don't recover values then
// an oplog we recovered from may still need to fault values in from memory.
// if (!getParent().isOverflowEnabled()) {
// // If !overflow then we can close the file even
// // when it has recent values because
// // we will never need to fault values in from this
// // file since they are all in memory.
// close();
// }
}
boolean needsCompaction() {
if (!isCompactionPossible())
return false;
if (this.unrecoveredRegionCount.get() > 0)
return false;
if (parent.getCompactionThreshold() == 100)
return true;
if (parent.getCompactionThreshold() == 0)
return false;
// otherwise check if we have enough garbage to collect with a compact
long rvHWMtmp = this.totalCount.get();
if (rvHWMtmp > 0) {
long tlc = this.totalLiveCount.get();
if (tlc < 0) {
tlc = 0;
}
double rv = tlc;
double rvHWM = rvHWMtmp;
if (((rv / rvHWM) * 100) <= parent.getCompactionThreshold()) {
return true;
}
} else {
return true;
}
return false;
}
public boolean hadLiveEntries() {
return this.totalCount.get() != 0;
}
public boolean hasNoLiveValues() {
return this.totalLiveCount.get() <= 0
// if we have an unrecoveredRegion then we don't know how many liveValues we
// have
&& this.unrecoveredRegionCount.get() == 0 && !getParent().isOfflineCompacting();
}
private void handleEmptyAndOldest(boolean calledByCompactor) {
if (!calledByCompactor && logger.isDebugEnabled()) {
logger.debug("Deleting oplog early because it is empty. It is for disk store {} and has oplog#{}", getParent().getName(),
oplogId);
}
destroy();
getOplogSet().destroyOldestReadyToCompact();
}
private void handleEmpty(boolean calledByCompactor) {
lockCompactor();
try {
if (!calledByCompactor) {
logger.info(LocalizedMessage.create(LocalizedStrings.Oplog_CLOSING_EMPTY_OPLOG_0_1, new Object[] { getParent().getName(),
toString() }));
}
cancelKrf();
close();
deleteFiles(getHasDeletes());
} finally {
unlockCompactor();
}
}
void cancelKrf() {
createKrf(true);
}
private final static ThreadLocal isCompactorThread = new ThreadLocal();
private boolean calledByCompactorThread() {
if (!this.compacting)
return false;
Object v = isCompactorThread.get();
return v != null && v == Boolean.TRUE;
}
private void handleNoLiveValues() {
if (!this.doneAppending)
return;
if (hasNoLiveValues()) {
if (LocalRegion.ISSUE_CALLBACKS_TO_CACHE_OBSERVER) {
if (calledByCompactorThread()) {
// after compaction, remove the oplog from the list & destroy it
CacheObserverHolder.getInstance().beforeDeletingCompactedOplog(this);
} else {
CacheObserverHolder.getInstance().beforeDeletingEmptyOplog(this);
}
}
if (isOldest()) {
if (calledByCompactorThread()) {
// do it in this compactor thread
handleEmptyAndOldest(true);
} else {
// schedule another thread to do it
getParent().executeDiskStoreTask(new Runnable() {
public void run() {
handleEmptyAndOldest(false);
}
});
}
} else {
if (calledByCompactorThread()) {
// do it in this compactor thread
handleEmpty(true);
} else {
// schedule another thread to do it
getParent().executeDiskStoreTask(new Runnable() {
public void run() {
handleEmpty(false);
}
});
}
}
} else if (needsCompaction()) {
addToBeCompacted();
}
}
private GemFireCacheImpl getGemFireCache() {
return getParent().getCache();
}
/**
* Return true if this oplog is the oldest one of those ready to compact
*/
private boolean isOldest() {
long myId = getOplogId();
return getOplogSet().isOldestExistingOplog(myId);
}
private boolean added = false;
private synchronized void addToBeCompacted() {
if (this.added)
return;
this.added = true;
getOplogSet().addToBeCompacted(this);
if (logger.isDebugEnabled()) {
logger.debug("Oplog::switchOpLog: Added the Oplog = {} for compacting.", this.oplogId);
}
}
private void initRecoveredEntry(DiskRegionView drv, DiskEntry de) {
addLive(drv, de);
}
/**
* The oplogId in re points to the oldOplogId. "this" oplog is the current
* oplog.
*/
private void updateRecoveredEntry(DiskRegionView drv, DiskEntry de, DiskEntry.RecoveredEntry re) {
if (getOplogId() != re.getOplogId()) {
Oplog oldOplog = getOplogSet().getChild(re.getOplogId());
oldOplog.rmLive(drv, de);
initRecoveredEntry(drv, de);
} else {
getDRI(drv).update(de);
}
}
public void prepareForCompact() {
this.compacting = true;
}
private final Lock compactorLock = new ReentrantLock();
private void lockCompactor() {
this.compactorLock.lock();
}
private void unlockCompactor() {
this.compactorLock.unlock();
}
/**
* Copy any live entries last stored in this oplog to the current oplog. No
* need to copy deletes in the drf. Backup only needs them until all the older
* crfs are empty.
*/
public int compact(OplogCompactor compactor) {
if (!needsCompaction()) {
return 0; // @todo check new logic that deals with not compacting oplogs
// which have unrecovered regions
}
isCompactorThread.set(Boolean.TRUE);
assert calledByCompactorThread();
getParent().acquireCompactorReadLock();
try {
if (!compactor.keepCompactorRunning()) {
return 0;
}
lockCompactor();
try {
if (hasNoLiveValues()) {
handleNoLiveValues();
return 0; // do this while holding compactorLock
}
// Asif:Start with a fresh wrapper on every compaction so that
// if previous run used some high memory byte array which was
// exceptional, it gets garbage collected.
long opStart = getStats().getStatTime();
BytesAndBitsForCompactor wrapper = new BytesAndBitsForCompactor();
DiskEntry de;
DiskEntry lastDe = null;
boolean compactFailed = /*
* getParent().getOwner().isDestroyed ||
*/!compactor.keepCompactorRunning();
int totalCount = 0;
for (DiskRegionInfo dri : this.regionMap.values()) {
final DiskRegionView dr = dri.getDiskRegion();
if (dr == null)
continue;
boolean didCompact = false;
while ((de = dri.getNextLiveEntry()) != null) {
if (/*
* getParent().getOwner().isDestroyed ||
*/!compactor.keepCompactorRunning()) {
compactFailed = true;
break;
}
if (lastDe != null) {
if (lastDe == de) {
throw new IllegalStateException("compactor would have gone into infinite loop");
}
assert lastDe != de;
}
lastDe = de;
didCompact = false;
synchronized (de) { // fix for bug 41797
DiskId did = de.getDiskId();
assert did != null;
synchronized (did) {
long oplogId = did.getOplogId();
if (oplogId != getOplogId()) {
continue;
}
boolean toCompact = getBytesAndBitsForCompaction(dr, de, wrapper);
if (toCompact) {
if (oplogId != did.getOplogId()) {
// @todo: Is this even possible? Perhaps I should just assert here
// skip this guy his oplogId changed
if (!wrapper.isReusable()) {
wrapper = new BytesAndBitsForCompactor();
} else if (wrapper.getDataChunk() != null) {
wrapper.setChunkData(null, (byte) 0);
}
continue;
}
// write it to the current oplog
getOplogSet().getChild().copyForwardModifyForCompact(dr, de, wrapper);
// the did's oplogId will now be set to the current active oplog
didCompact = true;
}
} // did
} // de
if (didCompact) {
totalCount++;
getStats().endCompactionUpdate(opStart);
opStart = getStats().getStatTime();
// Asif: Check if the value byte array happens to be any of the
// constant
// static byte arrays or references the value byte array of
// underlying RegionEntry.
// If so for preventing data corruption across regions
// ( in case of static byte arrays) & for RegionEntry,
// recreate the wrapper
if (!wrapper.isReusable()) {
wrapper = new BytesAndBitsForCompactor();
}
}
}
}
if (!compactFailed) {
// Need to still remove the oplog even if it had nothing to compact.
handleNoLiveValues();
// We can't assert hasNoLiveValues() because a race condition exists
// in which our liveEntries list is empty but the liveCount has not
// yet been decremented.
}
return totalCount;
} finally {
unlockCompactor();
}
} finally {
getParent().releaseCompactorReadLock();
assert calledByCompactorThread();
isCompactorThread.remove();
}
}
public static boolean isCRFFile(String filename) {
return filename.endsWith(Oplog.CRF_FILE_EXT);
}
public static boolean isDRFFile(String filename) {
return filename.endsWith(Oplog.DRF_FILE_EXT);
}
public static String getKRFFilenameFromCRFFilename(String crfFilename) {
return crfFilename.substring(0, crfFilename.length() - Oplog.CRF_FILE_EXT.length()) + Oplog.KRF_FILE_EXT;
}
long testGetOplogFileLength() throws IOException {
long result = 0;
if (this.crf.raf != null) {
result += this.crf.raf.length();
}
if (this.drf.raf != null) {
result += this.drf.raf.length();
}
return result;
}
/**
* This method is called by the async value recovery task to recover the
* values from the crf if the keys were recovered from the krf.
*
* @param diskRecoveryStores
*/
public void recoverValuesIfNeeded(Map<Long, DiskRecoveryStore> diskRecoveryStores) {
// Early out if we start closing the parent.
if (getParent().isClosing()) {
return;
}
List<KRFEntry> sortedLiveEntries;
HashMap<Long, DiskRegionInfo> targetRegions = new HashMap<Long, DiskRegionInfo>(this.regionMap);
synchronized (diskRecoveryStores) {
// Don't bother to include any stores that have reached the lru limit
Iterator<DiskRecoveryStore> itr = diskRecoveryStores.values().iterator();
while (itr.hasNext()) {
DiskRecoveryStore store = itr.next();
if (store.lruLimitExceeded()) {
itr.remove();
}
}
// Get the a sorted list of live entries from the target regions
targetRegions.keySet().retainAll(diskRecoveryStores.keySet());
}
sortedLiveEntries = getSortedLiveEntries(targetRegions.values());
if (sortedLiveEntries == null) {
// There are no live entries in this oplog to recover.
return;
}
final ByteArrayDataInput in = new ByteArrayDataInput();
for (KRFEntry entry : sortedLiveEntries) {
// Early out if we start closing the parent.
if (getParent().isClosing()) {
return;
}
DiskEntry diskEntry = entry.getDiskEntry();
DiskRegionView diskRegionView = entry.getDiskRegionView();
long diskRegionId = diskRegionView.getId();
// TODO DAN ok, here's what we need to do
// 1) lock and obtain the correct RegionEntry that we are recovering too.
// this will likely mean obtaining the correct DiskRecoveryStore, since
// with
// that we can find the region entry I believe.
// 2) Make sure that the lru limit is not exceeded
// 3) Update the region entry with the value from disk, assuming the value
// from
// disk is still valid. That is going to be something like
synchronized (diskRecoveryStores) {
DiskRecoveryStore diskRecoveryStore = diskRecoveryStores.get(diskRegionId);
if (diskRecoveryStore == null) {
continue;
}
// Reset the disk region view because it may have changed
// due to the region being created.
diskRegionView = diskRecoveryStore.getDiskRegionView();
if (diskRegionView == null) {
continue;
}
if (diskRecoveryStore.lruLimitExceeded()) {
diskRecoveryStores.remove(diskRegionId);
continue;
}
if (diskRegionView.isEntriesMapIncompatible()) {
// Refetch the disk entry because it may have changed due to copying
// an incompatible region map
diskEntry = (DiskEntry) diskRecoveryStore.getRegionMap().getEntryInVM(diskEntry.getKey());
if (diskEntry == null) {
continue;
}
}
synchronized (diskEntry) {
// Make sure the entry hasn't been modified
if (diskEntry.getDiskId() != null && diskEntry.getDiskId().getOplogId() == oplogId) {
// dear lord, this goes through a lot of layers. Maybe we should
// skip some?
// * specifically, this could end up faulting in from a different
// oplog, causing
// us to seek.
// * Also, there may be lock ordering issues here, Really, I guess I
// want
// a flavor of faultInValue that only faults in from this oplog.
// * We could have some churn here, opening and closing this oplog
// * We also might not be buffering adjacent entries? Not sure about
// that one
// * Ideally, this would fault the thing in only if it were in this
// oplog and the lru limit wasn't hit
// and it would return a status if the lru limit was hit to make us
// remove the store.
try {
DiskEntry.Helper.recoverValue(diskEntry, getOplogId(), diskRecoveryStore, in);
} catch (RegionDestroyedException e) {
// This region has been destroyed, stop recovering from it.
diskRecoveryStores.remove(diskRegionId);
}
}
}
}
}
}
private byte[] serializeRVVs(Map<Long, AbstractDiskRegion> drMap, boolean gcRVV) throws IOException {
HeapDataOutputStream out = new HeapDataOutputStream(Version.CURRENT);
// Filter out any regions that do not have versioning enabled
drMap = new HashMap<Long, AbstractDiskRegion>(drMap);
for (Iterator<Map.Entry<Long, AbstractDiskRegion>> itr = drMap.entrySet().iterator(); itr.hasNext();) {
Map.Entry<Long, AbstractDiskRegion> regionEntry = itr.next();
AbstractDiskRegion dr = regionEntry.getValue();
if (!dr.getFlags().contains(DiskRegionFlag.IS_WITH_VERSIONING)) {
itr.remove();
}
}
// Write the size first
InternalDataSerializer.writeUnsignedVL(drMap.size(), out);
// Now write regions RVV.
for (Map.Entry<Long, AbstractDiskRegion> regionEntry : drMap.entrySet()) {
// For each region, write the RVV for the region.
Long diskRegionID = regionEntry.getKey();
AbstractDiskRegion dr = regionEntry.getValue();
RegionVersionVector rvv = dr.getRegionVersionVector();
if (logger.isTraceEnabled(LogMarker.PERSIST_WRITES)) {
logger.trace(LogMarker.PERSIST_WRITES, "serializeRVVs: isGCRVV={} drId={} rvv={} oplog#{}", gcRVV, diskRegionID, rvv
.fullToString(), getOplogId());
}
// Write the disk region id
InternalDataSerializer.writeUnsignedVL(diskRegionID, out);
if (gcRVV) {
// For the GC RVV, we will just write the GC versions
Map<VersionSource, Long> memberToVersion = rvv.getMemberToGCVersion();
InternalDataSerializer.writeUnsignedVL(memberToVersion.size(), out);
for (Entry<VersionSource, Long> memberEntry : memberToVersion.entrySet()) {
// For each member, write the canonicalized member id,
// and the version number for that member
VersionSource member = memberEntry.getKey();
Long gcVersion = memberEntry.getValue();
int id = getParent().getDiskInitFile().getOrCreateCanonicalId(member);
InternalDataSerializer.writeUnsignedVL(id, out);
InternalDataSerializer.writeUnsignedVL(gcVersion, out);
}
} else {
InternalDataSerializer.writeBoolean(dr.getRVVTrusted(), out);
// Otherwise, we will write the version and exception list for each
// member
Map<VersionSource, RegionVersionHolder> memberToVersion = rvv.getMemberToVersion();
InternalDataSerializer.writeUnsignedVL(memberToVersion.size(), out);
for (Map.Entry<VersionSource, RegionVersionHolder> memberEntry : memberToVersion.entrySet()) {
// For each member, right the canonicalized member id,
// and the version number with exceptions for that member
VersionSource member = memberEntry.getKey();
RegionVersionHolder versionHolder = memberEntry.getValue();
int id = getParent().getDiskInitFile().getOrCreateCanonicalId(member);
InternalDataSerializer.writeUnsignedVL(id, out);
synchronized (versionHolder) {
InternalDataSerializer.invokeToData(versionHolder, out);
}
}
}
}
byte[] rvvBytes = out.toByteArray();
return rvvBytes;
}
// // Comparable code //
// public int compareTo(Oplog o) {
// return getOplogId() - o.getOplogId();
// }
// public boolean equals(Object o) {
// if (o instanceof Oplog) {
// return compareTo((Oplog)o) == 0;
// } else {
// return false;
// }
// }
// public int hashCode() {
// return getOplogId();
// }
@Override
public String toString() {
return "oplog#" + getOplogId() /* + "DEBUG" + System.identityHashCode(this) */;
}
// //////// Methods used during recovery //////////////
// ////////////////////Inner Classes //////////////////////
private static class OplogFile {
public File f;
public UninterruptibleRandomAccessFile raf;
public volatile boolean RAFClosed = true;
public UninterruptibleFileChannel channel;
public ByteBuffer writeBuf;
public long currSize;
public long bytesFlushed;
public boolean unpreblown;
}
private static class KRFile {
public File f;
FileOutputStream fos;
BufferedOutputStream bos;
DataOutputStream dos;
long lastOffset = 0;
int keyNum = 0;
}
private static String baToString(byte[] ba) {
return baToString(ba, ba != null ? ba.length : 0);
}
private static String baToString(byte[] ba, int len) {
if (ba == null)
return "null";
StringBuffer sb = new StringBuffer();
for (int i = 0; i < len; i++) {
sb.append(ba[i]).append(", ");
}
return sb.toString();
}
private static String laToString(long[] la) {
if (la == null)
return "null";
StringBuffer sb = new StringBuffer();
for (int i = 0; i < la.length; i++) {
sb.append(la[i]).append(", ");
}
return sb.toString();
}
void serializeVersionTag(VersionHolder tag, DataOutput out) throws IOException {
int entryVersion = tag.getEntryVersion();
long regionVersion = tag.getRegionVersion();
VersionSource versionMember = tag.getMemberID();
long timestamp = tag.getVersionTimeStamp();
int dsId = tag.getDistributedSystemId();
serializeVersionTag(entryVersion, regionVersion, versionMember, timestamp, dsId, out);
}
byte[] serializeVersionTag(VersionTag tag) throws IOException {
int entryVersion = tag.getEntryVersion();
long regionVersion = tag.getRegionVersion();
VersionSource versionMember = tag.getMemberID();
long timestamp = tag.getVersionTimeStamp();
int dsId = tag.getDistributedSystemId();
return serializeVersionTag(entryVersion, regionVersion, versionMember, timestamp, dsId);
}
byte[] serializeVersionTag(VersionStamp stamp) throws IOException {
int entryVersion = stamp.getEntryVersion();
long regionVersion = stamp.getRegionVersion();
VersionSource versionMember = stamp.getMemberID();
long timestamp = stamp.getVersionTimeStamp();
int dsId = stamp.getDistributedSystemId();
return serializeVersionTag(entryVersion, regionVersion, versionMember, timestamp, dsId);
}
private byte[] serializeVersionTag(int entryVersion, long regionVersion, VersionSource versionMember, long timestamp, int dsId)
throws IOException {
HeapDataOutputStream out = new HeapDataOutputStream(4 + 8 + 4 + 8 + 4, Version.CURRENT);
serializeVersionTag(entryVersion, regionVersion, versionMember, timestamp, dsId, out);
byte[] versionsBytes = out.toByteArray();
return versionsBytes;
}
private void serializeVersionTag(int entryVersion, long regionVersion, VersionSource versionMember, long timestamp, int dsId,
DataOutput out) throws IOException {
int memberId = getParent().getDiskInitFile().getOrCreateCanonicalId(versionMember);
InternalDataSerializer.writeSignedVL(entryVersion, out);
InternalDataSerializer.writeUnsignedVL(regionVersion, out);
InternalDataSerializer.writeUnsignedVL(memberId, out);
InternalDataSerializer.writeUnsignedVL(timestamp, out);
InternalDataSerializer.writeSignedVL(dsId, out);
}
/**
* Holds all the state for the current operation. Since an oplog can only have
* one operation in progress at any given time we only need a single instance
* of this class per oplog.
*/
private class OpState {
private byte opCode;
private byte userBits;
private boolean notToUseUserBits; // currently only DestroyFromDisk will not
// use userBits
/**
* How many bytes it will be when serialized
*/
private int size;
private boolean needsValue;
private ValueWrapper value;
private int drIdLength; // 1..9
private final byte[] drIdBytes = new byte[DiskInitFile.DR_ID_MAX_BYTES];
private byte[] keyBytes;
private final byte[] deltaIdBytes = new byte[8];
private int deltaIdBytesLength;
private long newEntryBase;
private DiskStoreID diskStoreId;
private OPLOG_TYPE magic;
private byte[] versionsBytes;
private short gfversion;
// private int entryVersion;
// private long regionVersion;
// private int memberId; // canonicalId of memberID
public final int getSize() {
return this.size;
}
public String debugStr() {
StringBuilder sb = new StringBuilder();
sb.append(" opcode=").append(this.opCode).append(" len=").append(this.value.getLength()).append(" vb=").append(this.value.getBytesAsString());
return sb.toString();
}
private final void write(OplogFile olf, ValueWrapper vw) throws IOException {
vw.sendTo(olf.writeBuf, Oplog.this);
}
private final void write(OplogFile olf, byte[] bytes, int byteLength) throws IOException {
int offset = 0;
final int maxOffset = byteLength;
ByteBuffer bb = olf.writeBuf;
while (offset < maxOffset) {
int bytesThisTime = maxOffset - offset;
boolean needsFlush = false;
if (bytesThisTime > bb.remaining()) {
needsFlush = true;
bytesThisTime = bb.remaining();
}
bb.put(bytes, offset, bytesThisTime);
offset += bytesThisTime;
if (needsFlush) {
flushNoSync(olf);
}
}
}
private final void writeByte(OplogFile olf, byte v) throws IOException {
ByteBuffer bb = olf.writeBuf;
if (1 > bb.remaining()) {
flushNoSync(olf);
}
bb.put(v);
}
private final void writeOrdinal(OplogFile olf, short ordinal) throws IOException {
ByteBuffer bb = olf.writeBuf;
if (3 > bb.remaining()) {
flushNoSync(olf);
}
// don't compress since we setup fixed size of buffers
Version.writeOrdinal(bb, ordinal, false);
}
private final void writeInt(OplogFile olf, int v) throws IOException {
ByteBuffer bb = olf.writeBuf;
if (4 > bb.remaining()) {
flushNoSync(olf);
}
bb.putInt(v);
}
private final void writeLong(OplogFile olf, long v) throws IOException {
ByteBuffer bb = olf.writeBuf;
if (8 > bb.remaining()) {
flushNoSync(olf);
}
bb.putLong(v);
}
public void initialize(long newEntryBase) {
this.opCode = OPLOG_NEW_ENTRY_BASE_ID;
this.newEntryBase = newEntryBase;
this.size = OPLOG_NEW_ENTRY_BASE_REC_SIZE;
}
public void initialize(short gfversion) {
this.opCode = OPLOG_GEMFIRE_VERSION;
this.gfversion = gfversion;
this.size = OPLOG_GEMFIRE_VERSION_REC_SIZE;
}
public void initialize(DiskStoreID diskStoreId) {
this.opCode = OPLOG_DISK_STORE_ID;
this.diskStoreId = diskStoreId;
this.size = OPLOG_DISK_STORE_REC_SIZE;
}
public void initialize(OPLOG_TYPE magic) {
this.opCode = OPLOG_MAGIC_SEQ_ID;
this.magic = magic;
this.size = OPLOG_MAGIC_SEQ_REC_SIZE;
}
public void initialize(Map<Long, AbstractDiskRegion> drMap, boolean gcRVV) throws IOException {
this.opCode = OPLOG_RVV;
byte[] rvvBytes = serializeRVVs(drMap, gcRVV);
this.value = new DiskEntry.Helper.ByteArrayValueWrapper(true, rvvBytes);
// Size is opCode + length + end of record
this.size = 1 + rvvBytes.length + 1;
}
public void initialize(long oplogKeyId, byte[] keyBytes, byte[] valueBytes, byte userBits, long drId, VersionTag tag,
boolean notToUseUserBits) throws IOException {
this.opCode = OPLOG_MOD_ENTRY_WITH_KEY_1ID;
this.size = 1;// for the opcode
saveUserBits(notToUseUserBits, userBits);
this.keyBytes = keyBytes;
this.value = new DiskEntry.Helper.CompactorValueWrapper(valueBytes, valueBytes.length);
if (this.userBits == 1 && this.value.getLength() == 0) {
throw new IllegalStateException("userBits==1 and valueLength is 0");
}
this.needsValue = EntryBits.isNeedsValue(this.userBits);
this.size += (4 + this.keyBytes.length);
saveDrId(drId);
initVersionsBytes(tag);
if (this.needsValue) {
this.size += 4 + this.value.getLength();
}
this.deltaIdBytesLength = 0;
{
long delta = calcDelta(oplogKeyId, this.opCode);
this.deltaIdBytesLength = bytesNeeded(delta);
this.size += this.deltaIdBytesLength;
this.opCode += this.deltaIdBytesLength - 1;
for (int i = this.deltaIdBytesLength - 1; i >= 0; i--) {
this.deltaIdBytes[i] = (byte) (delta & 0xFF);
delta >>= 8;
}
}
this.size++; // for END_OF_RECORD_ID
}
private void initVersionsBytes(VersionTag tag) throws IOException {
if (EntryBits.isWithVersions(this.userBits)) {
this.versionsBytes = serializeVersionTag(tag);
this.size += this.versionsBytes.length;
}
}
private void initVersionsBytes(DiskEntry entry) throws IOException {
// persist entry version, region version and memberId
// The versions in entry are initialized to 0. So we will not persist the
// 3
// types of data if region version is 0.
// TODO: This method will be called 2 times, one for persisting into crf
// another for persisting into krf, since we did not save the byte arrary
// for the verstion tag.
VersionStamp stamp = entry.getVersionStamp();
if (EntryBits.isWithVersions(this.userBits)) {
assert (stamp != null);
this.versionsBytes = serializeVersionTag(stamp);
this.size += this.versionsBytes.length;
}
}
public void initialize(byte opCode, DiskRegionView dr, DiskEntry entry, ValueWrapper value, byte userBits,
boolean notToUseUserBits) throws IOException {
this.opCode = opCode;
this.size = 1;// for the opcode
saveUserBits(notToUseUserBits, userBits);
this.value = value;
if (this.userBits == 1 && this.value.getLength() == 0) {
throw new IllegalStateException("userBits==1 and valueLength is 0");
}
boolean needsKey = false;
if (this.opCode == OPLOG_MOD_ENTRY_1ID) {
if (modNeedsKey(entry)) {
needsKey = true;
this.opCode = OPLOG_MOD_ENTRY_WITH_KEY_1ID;
}
this.needsValue = EntryBits.isNeedsValue(this.userBits);
initVersionsBytes(entry);
} else if (this.opCode == OPLOG_NEW_ENTRY_0ID) {
needsKey = true;
this.needsValue = EntryBits.isNeedsValue(this.userBits);
initVersionsBytes(entry);
} else if (this.opCode == OPLOG_DEL_ENTRY_1ID) {
needsKey = false;
this.needsValue = false;
}
if (needsKey) {
Object key = entry.getKey();
this.keyBytes = EntryEventImpl.serialize(key);
this.size += (4 + this.keyBytes.length);
} else {
this.keyBytes = null;
}
if (this.opCode == OPLOG_DEL_ENTRY_1ID) {
this.drIdLength = 0;
} else {
long drId = dr.getId();
saveDrId(drId);
}
if (this.needsValue) {
this.size += 4 + this.value.getLength();
}
this.deltaIdBytesLength = 0;
if (this.opCode != OPLOG_NEW_ENTRY_0ID) {
// if (this.opCode == OPLOG_DEL_ENTRY_1ID) {
// this.newEntryBase =
// writeDelEntryId/*abs(entry.getDiskId().getKeyId())*/; this.size += 8;
// // HACK DEBUG
// } else {
// this.newEntryBase =
// writeModEntryId/*abs(entry.getDiskId().getKeyId())*/; this.size += 8;
// // HACK DEBUG
// }
long keyId = entry.getDiskId().getKeyId();
if (keyId == 0) {
Assert.fail("Attempting to write an entry with keyId=0 to oplog. Entry key=" + entry.getKey() + " diskId="
+ entry.getDiskId() + " region=" + dr);
}
long delta = calcDelta(abs(keyId), this.opCode);
this.deltaIdBytesLength = bytesNeeded(delta);
this.size += this.deltaIdBytesLength;
this.opCode += this.deltaIdBytesLength - 1;
for (int i = this.deltaIdBytesLength - 1; i >= 0; i--) {
this.deltaIdBytes[i] = (byte) (delta & 0xFF);
delta >>= 8;
}
}
this.size++; // for END_OF_RECORD_ID
}
private void saveUserBits(boolean notToUseUserBits, byte userBits) {
this.notToUseUserBits = notToUseUserBits;
if (notToUseUserBits) {
this.userBits = 0;
} else {
this.userBits = EntryBits.getPersistentBits(userBits);
this.size++; // for the userBits
}
}
private void saveDrId(long drId) {
// If the drId is <= 255 (max unsigned byte) then
// encode it as a single byte.
// Otherwise write a byte whose value is the number of bytes
// it will be encoded by and then follow it with that many bytes.
// Note that drId are not allowed to have a value in the range 1..8
// inclusive.
if (drId >= 0 && drId <= 255) {
this.drIdLength = 1;
this.drIdBytes[0] = (byte) drId;
} else {
byte bytesNeeded = (byte) Oplog.bytesNeeded(drId);
this.drIdLength = bytesNeeded + 1;
this.drIdBytes[0] = bytesNeeded;
for (int i = bytesNeeded; i >= 1; i--) {
this.drIdBytes[i] = (byte) (drId & 0xFF);
drId >>= 8;
}
}
this.size += this.drIdLength;
}
public void initialize(byte opCode, long drId, VersionTag tag) throws IOException {
this.opCode = opCode;
assert this.opCode == OPLOG_CONFLICT_VERSION;
this.size = 1;// for the opcode
saveDrId(drId);
this.versionsBytes = serializeVersionTag(tag);
this.size += this.versionsBytes.length;
this.size++; // for END_OF_RECORD_ID
}
/**
* Returns the offset to the first byte of the value bytes.
*/
public int getValueOffset() {
if (!this.needsValue)
return 0;
int result = this.deltaIdBytesLength
// + 8 /* HACK DEBUG */
+ this.drIdLength + 1/* opcode */
+ 4/* value length */;
if (this.notToUseUserBits == false) {
result++;
}
if (EntryBits.isWithVersions(this.userBits) && this.versionsBytes != null) {
result += this.versionsBytes.length;
}
return result;
}
public long write(OplogFile olf) throws IOException {
long bytesWritten = 0;
writeByte(olf, this.opCode);
bytesWritten++;
if (this.opCode == OPLOG_NEW_ENTRY_BASE_ID) {
writeLong(olf, this.newEntryBase);
bytesWritten += 8;
} else if (this.opCode == OPLOG_DISK_STORE_ID) {
writeLong(olf, this.diskStoreId.getLeastSignificantBits());
writeLong(olf, this.diskStoreId.getMostSignificantBits());
bytesWritten += 16;
} else if (this.opCode == OPLOG_MAGIC_SEQ_ID) {
write(olf, this.magic.getBytes(), OPLOG_TYPE.getLen());
bytesWritten += OPLOG_TYPE.getLen();
} else if (this.opCode == OPLOG_RVV) {
write(olf, this.value);
bytesWritten += this.value.getLength();
} else if (this.opCode == OPLOG_GEMFIRE_VERSION) {
writeOrdinal(olf, this.gfversion);
bytesWritten++;
} else if (this.opCode == OPLOG_CONFLICT_VERSION) {
if (this.drIdLength > 0) {
write(olf, this.drIdBytes, this.drIdLength);
bytesWritten += this.drIdLength;
}
assert this.versionsBytes.length > 0;
write(olf, this.versionsBytes, this.versionsBytes.length);
bytesWritten += this.versionsBytes.length;
} else {
if (this.notToUseUserBits == false) {
writeByte(olf, this.userBits);
bytesWritten++;
}
if (this.deltaIdBytesLength > 0) {
write(olf, this.deltaIdBytes, this.deltaIdBytesLength);
bytesWritten += this.deltaIdBytesLength;
// writeLong(olf, this.newEntryBase); bytesWritten += 8; // HACK DEBUG
}
if (this.drIdLength > 0) {
write(olf, this.drIdBytes, this.drIdLength);
bytesWritten += this.drIdLength;
}
if (EntryBits.isWithVersions(this.userBits) && this.versionsBytes != null && this.opCode != OPLOG_DEL_ENTRY_1ID) {
write(olf, this.versionsBytes, this.versionsBytes.length);
bytesWritten += this.versionsBytes.length;
}
if (this.needsValue) {
int len = this.value.getLength();
writeInt(olf, len);
bytesWritten += 4;
if (len > 0) {
write(olf, this.value);
bytesWritten += len;
}
}
if (this.keyBytes != null) {
writeInt(olf, this.keyBytes.length);
bytesWritten += 4;
if (this.keyBytes.length > 0) {
write(olf, this.keyBytes, this.keyBytes.length);
bytesWritten += this.keyBytes.length;
}
}
}
writeByte(olf, END_OF_RECORD_ID);
bytesWritten++;
return bytesWritten;
}
/**
* Free up any references to possibly large data.
*/
public void clear() {
this.value = null;
this.keyBytes = null;
this.notToUseUserBits = false;
this.versionsBytes = null;
}
}
/**
* Fake disk entry used to implement the circular linked list of entries an
* oplog has. Each Oplog will have one OplogDiskEntry whose prev and next
* fields point to the actual DiskEntrys currently stored in its crf. Items
* are added at "next" so the most recent entry written will be at next and
* the oldest item written will be at "prev".
*/
static class OplogDiskEntry implements DiskEntry, RegionEntry {
private DiskEntry next = this;
private DiskEntry prev = this;
public synchronized DiskEntry getPrev() {
return this.prev;
}
public synchronized void setPrev(DiskEntry v) {
this.prev = v;
}
public synchronized DiskEntry getNext() {
return this.next;
}
public synchronized void setNext(DiskEntry v) {
this.next = v;
}
/**
* returns the number of entries cleared
*
* @param rvv
* @param pendingKrfTags
*/
public synchronized int clear(RegionVersionVector rvv, Map<DiskEntry, VersionHolder> pendingKrfTags) {
if (rvv == null) {
if (pendingKrfTags != null) {
pendingKrfTags.clear();
}
return clear();
} else {
// Clearing the list is handled in AbstractRegionMap.clear for RVV
// based clears, because it removes each entry.
// It needs to be handled there because the entry is synched at that
// point
return 0;
}
}
/**
* Clear using an RVV. Remove live entries that are contained within the
* clear RVV.
*
* @param pendingKrfTags
*/
private int clearWithRVV(RegionVersionVector rvv, Map<DiskEntry, VersionTag> pendingKrfTags) {
// TODO this doesn't work, because we can end up removing entries from
// here before
// they are removed from the region map. Reverting this to the old, leaky,
// behavior
// until I fix the region map code.
return 0;
// int result = 0;
// DiskEntry n = getNext();
// while (n != this) {
// DiskEntry nextEntry = n.getNext();
// VersionSource member = null;
// long version = -1;
// if(pendingKrfTags != null) {
// VersionTag tag = pendingKrfTags.get(n);
// if(tag != null) {
// member = tag.getMemberID();
// version = tag.getRegionVersion();
// }
// }
// if(member == null) {
// VersionStamp stamp = n.getVersionStamp();
// member = stamp.getMemberID();
// version = stamp.getRegionVersion();
// }
//
// if(rvv.contains(member, version)) {
// result++;
// remove(n);
// if(pendingKrfTags != null) {
// pendingKrfTags.remove(n);
// }
// }
// n = nextEntry;
// }
// return result;
}
/**
* Clear without an RVV. Empties the entire list.
*/
private int clear() {
int result = 0;
// Need to iterate over the list and set each prev field to null
// so that if remove is called it will know that the DiskEntry
// has already been removed.
DiskEntry n = getNext();
setNext(this);
setPrev(this);
while (n != this) {
result++;
n.setPrev(null);
n = n.getNext();
}
return result;
}
public synchronized boolean remove(DiskEntry v) {
DiskEntry p = v.getPrev();
if (p != null) {
v.setPrev(null);
DiskEntry n = v.getNext();
v.setNext(null);
n.setPrev(p);
p.setNext(n);
return true;
} else {
return false;
}
}
public synchronized void insert(DiskEntry v) {
assert v.getPrev() == null;
// checkForDuplicate(v);
DiskEntry n = getNext();
setNext(v);
n.setPrev(v);
v.setNext(n);
v.setPrev(this);
}
public synchronized void replace(DiskEntry old, DiskEntry v) {
DiskEntry p = old.getPrev();
if (p != null) {
old.setPrev(null);
v.setPrev(p);
p.setNext(v);
}
DiskEntry n = old.getNext();
if (n != null) {
old.setNext(null);
v.setNext(n);
n.setPrev(v);
}
if (getNext() == old) {
setNext(v);
}
}
// private synchronized void checkForDuplicate(DiskEntry v) {
// DiskEntry de = getPrev();
// final long newKeyId = v.getDiskId().getKeyId();
// while (de != this) {
// if (de.getDiskId().getKeyId() == newKeyId) {
// throw new IllegalStateException(
// "DEBUG: found duplicate for oplogKeyId=" + newKeyId + " de="
// + System.identityHashCode(v) + " ode="
// + System.identityHashCode(de) + " deKey=" + v.getKey()
// + " odeKey=" + de.getKey() + " deOffset="
// + v.getDiskId().getOffsetInOplog() + " odeOffset="
// + de.getDiskId().getOffsetInOplog());
// }
// de = de.getPrev();
// }
// }
@Override
public Object getKey() {
throw new IllegalStateException();
}
@Override
public Object _getValue() {
throw new IllegalStateException();
}
@Override
public Token getValueAsToken() {
throw new IllegalStateException();
}
@Override
public void handleValueOverflow(RegionEntryContext context) {throw new IllegalStateException();}
@Override
public void afterValueOverflow(RegionEntryContext context) {throw new IllegalStateException();}
@Override
public Object prepareValueForCache(RegionEntryContext r, Object val, boolean isEntryUpdate) { throw new IllegalStateException("Should never be called"); }
@Override
public Object _getValueRetain(RegionEntryContext context, boolean decompress) {
throw new IllegalStateException();
}
@Override
public void setValueWithContext(RegionEntryContext context, Object value) {
throw new IllegalStateException();
}
public void _removePhase1() {
throw new IllegalStateException();
}
public DiskId getDiskId() {
throw new IllegalStateException();
}
public long getLastModified() {
throw new IllegalStateException();
}
public boolean isRecovered() {
throw new IllegalStateException();
}
public boolean isValueNull() {
throw new IllegalStateException();
}
public boolean isRemovedFromDisk() {
throw new IllegalStateException();
}
public int updateAsyncEntrySize(EnableLRU capacityController) {
throw new IllegalStateException();
}
/**
* Adds any live entries in this list to liveEntries and returns the index
* of the next free slot.
*
* @param liveEntries
* the array to fill with the live entries
* @param idx
* the first free slot in liveEntries
* @param drv
* the disk region these entries are on
* @param pendingKrfTags
* @return the next free slot in liveEntries
*/
public synchronized int addLiveEntriesToList(KRFEntry[] liveEntries, int idx, DiskRegionView drv,
Map<DiskEntry, VersionHolder> pendingKrfTags) {
DiskEntry de = getPrev();
while (de != this) {
VersionHolder tag = null;
if (pendingKrfTags != null) {
tag = pendingKrfTags.get(de);
}
liveEntries[idx] = new KRFEntry(drv, de, tag);
idx++;
de = de.getPrev();
}
return idx;
}
/*
* (non-Javadoc)
*
* @see com.gemstone.gemfire.internal.cache.DiskEntry#getVersionStamp()
*/
@Override
public VersionStamp getVersionStamp() {
// dummy entry as start of live list
return null;
}
@Override
public boolean hasStats() {
// TODO Auto-generated method stub
return false;
}
@Override
public long getLastAccessed() throws InternalStatisticsDisabledException {
// TODO Auto-generated method stub
return 0;
}
@Override
public long getHitCount() throws InternalStatisticsDisabledException {
// TODO Auto-generated method stub
return 0;
}
@Override
public long getMissCount() throws InternalStatisticsDisabledException {
// TODO Auto-generated method stub
return 0;
}
@Override
public void updateStatsForPut(long lastModifiedTime) {
// TODO Auto-generated method stub
}
@Override
public VersionTag generateVersionTag(VersionSource member, boolean withDelta, LocalRegion region, EntryEventImpl event) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean dispatchListenerEvents(EntryEventImpl event) throws InterruptedException {
// TODO Auto-generated method stub
return false;
}
@Override
public void setRecentlyUsed() {
// TODO Auto-generated method stub
}
@Override
public void updateStatsForGet(boolean hit, long time) {
// TODO Auto-generated method stub
}
@Override
public void txDidDestroy(long currTime) {
// TODO Auto-generated method stub
}
@Override
public void resetCounts() throws InternalStatisticsDisabledException {
// TODO Auto-generated method stub
}
@Override
public void makeTombstone(LocalRegion r, VersionTag version) throws RegionClearedException {
// TODO Auto-generated method stub
}
@Override
public void removePhase1(LocalRegion r, boolean clear) throws RegionClearedException {
// TODO Auto-generated method stub
}
@Override
public void removePhase2() {
// TODO Auto-generated method stub
}
@Override
public boolean isRemoved() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isRemovedPhase2() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isTombstone() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean fillInValue(LocalRegion r, com.gemstone.gemfire.internal.cache.InitialImageOperation.Entry entry,
ByteArrayDataInput in, DM mgr) {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isOverflowedToDisk(LocalRegion r, DiskPosition dp) {
// TODO Auto-generated method stub
return false;
}
@Override
public Object getValue(RegionEntryContext context) {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueRetain(RegionEntryContext context) {
return null;
}
@Override
public void setValue(RegionEntryContext context, Object value) throws RegionClearedException {
// TODO Auto-generated method stub
}
@Override
public void setValueWithTombstoneCheck(Object value, EntryEvent event) throws RegionClearedException {
// TODO Auto-generated method stub
}
@Override
public Object getTransformedValue() {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueInVM(RegionEntryContext context) {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueOnDisk(LocalRegion r) throws EntryNotFoundException {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueOnDiskOrBuffer(LocalRegion r) throws EntryNotFoundException {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean initialImagePut(LocalRegion region, long lastModified, Object newValue, boolean wasRecovered,
boolean acceptedVersionTag) throws RegionClearedException {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean initialImageInit(LocalRegion region, long lastModified, Object newValue, boolean create, boolean wasRecovered,
boolean acceptedVersionTag) throws RegionClearedException {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean destroy(LocalRegion region, EntryEventImpl event, boolean inTokenMode, boolean cacheWrite,
Object expectedOldValue, boolean forceDestroy, boolean removeRecoveredEntry) throws CacheWriterException,
EntryNotFoundException, TimeoutException, RegionClearedException {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean getValueWasResultOfSearch() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setValueResultOfSearch(boolean v) {
// TODO Auto-generated method stub
}
@Override
public Object getSerializedValueOnDisk(LocalRegion localRegion) {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueInVMOrDiskWithoutFaultIn(LocalRegion owner) {
// TODO Auto-generated method stub
return null;
}
@Override
public Object getValueOffHeapOrDiskWithoutFaultIn(LocalRegion owner) {
// TODO Auto-generated method stub
return null;
}
@Override
public boolean isUpdateInProgress() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setUpdateInProgress(boolean underUpdate) {
// TODO Auto-generated method stub
}
@Override
public boolean isMarkedForEviction() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setMarkedForEviction() {
// TODO Auto-generated method stub
}
@Override
public void clearMarkedForEviction() {
// TODO Auto-generated method stub
}
@Override
public boolean isInvalid() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isDestroyed() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isDestroyedOrRemoved() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isDestroyedOrRemovedButNotTombstone() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isInvalidOrRemoved() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setValueToNull() {
// TODO Auto-generated method stub
}
@Override
public void returnToPool() {
// TODO Auto-generated method stub
}
@Override
public boolean isCacheListenerInvocationInProgress() {
// TODO Auto-generated method stub
return false;
}
@Override
public void setCacheListenerInvocationInProgress(boolean isListenerInvoked) {
// TODO Auto-generated method stub
}
@Override
public void setValue(RegionEntryContext context, Object value,
EntryEventImpl event) throws RegionClearedException {
}
@Override
public boolean isInUseByTransaction() {
return false;
}
@Override
public void setInUseByTransaction(boolean v) {
}
@Override
public void incRefCount() {
}
@Override
public void decRefCount(NewLRUClockHand lruList, LocalRegion lr) {
}
@Override
public void resetRefCount(NewLRUClockHand lruList) {
}
@Override
public Object prepareValueForCache(RegionEntryContext r, Object val,
EntryEventImpl event, boolean isEntryUpdate) {
throw new IllegalStateException("Should never be called");
}
}
/**
* Used as the value in the regionMap. Tracks information about what the
* region has in this oplog.
*/
public interface DiskRegionInfo {
public DiskRegionView getDiskRegion();
public int addLiveEntriesToList(KRFEntry[] liveEntries, int idx);
public void addLive(DiskEntry de);
public void update(DiskEntry entry);
public void replaceLive(DiskEntry old, DiskEntry de);
public boolean rmLive(DiskEntry de, Oplog oplog);
public DiskEntry getNextLiveEntry();
public void setDiskRegion(DiskRegionView dr);
public long clear(RegionVersionVector rvv);
/**
* Return true if we are the first guy to set it to true
*/
public boolean testAndSetUnrecovered();
public boolean getUnrecovered();
/**
* Return true if we are the first guy to set it to false
*/
public boolean testAndSetRecovered(DiskRegionView dr);
/**
* Callback to indicate that this oplog has created a krf.
*/
public void afterKrfCreated();
}
public abstract static class AbstractDiskRegionInfo implements DiskRegionInfo {
private DiskRegionView dr;
private boolean unrecovered = false;
public AbstractDiskRegionInfo(DiskRegionView dr) {
this.dr = dr;
}
public abstract void addLive(DiskEntry de);
public abstract DiskEntry getNextLiveEntry();
public abstract long clear(RegionVersionVector rvv);
final public DiskRegionView getDiskRegion() {
return this.dr;
}
final public void setDiskRegion(DiskRegionView dr) {
this.dr = dr;
}
synchronized public boolean testAndSetUnrecovered() {
boolean result = !this.unrecovered;
if (result) {
this.unrecovered = true;
this.dr = null;
}
return result;
}
final synchronized public boolean getUnrecovered() {
return this.unrecovered;
}
final synchronized public boolean testAndSetRecovered(DiskRegionView dr) {
boolean result = this.unrecovered;
if (result) {
this.unrecovered = false;
this.dr = dr;
}
return result;
}
}
public static class DiskRegionInfoNoList extends AbstractDiskRegionInfo {
private final AtomicInteger liveCount = new AtomicInteger();
public DiskRegionInfoNoList(DiskRegionView dr) {
super(dr);
}
@Override
public void addLive(DiskEntry de) {
this.liveCount.incrementAndGet();
}
@Override
public void update(DiskEntry entry) {
// nothing to do
}
@Override
public void replaceLive(DiskEntry old, DiskEntry de) {
}
@Override
public boolean rmLive(DiskEntry de, Oplog oplog) {
return this.liveCount.decrementAndGet() >= 0;
}
@Override
public DiskEntry getNextLiveEntry() {
return null;
}
@Override
public long clear(RegionVersionVector rvv) {
return this.liveCount.getAndSet(0);
}
public int addLiveEntriesToList(KRFEntry[] liveEntries, int idx) {
// nothing needed since no linked list
return idx;
}
public void afterKrfCreated() {
// do nothing
}
}
public static class DiskRegionInfoWithList extends AbstractDiskRegionInfo {
/**
* A linked list of the live entries in this oplog. Updates to
* pendingKrfTags are protected by synchronizing on object.
*/
private final OplogDiskEntry liveEntries = new OplogDiskEntry();
/**
* A map of DiskEntry to the VersionTag that is written to disk associated
* with this tag. Only needed for async regions so that we can generate a
* krf with a version tag that matches the the tag we have written to disk
* for this oplog.
*/
private Map<DiskEntry, VersionHolder> pendingKrfTags;
public DiskRegionInfoWithList(DiskRegionView dr, boolean couldHaveKrf, boolean krfExists) {
super(dr);
// we need to keep track of the version tags for entries so that we write
// the correct entry to the krf
// both in sync and async disk write cases
if (!krfExists && couldHaveKrf) {
pendingKrfTags = new HashMap<DiskEntry, VersionHolder>(200);
} else {
pendingKrfTags = null;
}
}
@Override
public void addLive(DiskEntry de) {
synchronized (liveEntries) {
this.liveEntries.insert(de);
if (pendingKrfTags != null && de.getVersionStamp() != null) {
// Remember the version tag of the entry as it was written to the crf.
pendingKrfTags.put(de, new CompactVersionHolder(de.getVersionStamp()));
}
}
}
@Override
public void update(DiskEntry de) {
if (pendingKrfTags != null && de.getVersionStamp() != null) {
// Remember the version tag of the entry as it was written to the crf.
pendingKrfTags.put(de, new CompactVersionHolder(de.getVersionStamp()));
}
}
@Override
public void replaceLive(DiskEntry old, DiskEntry de) {
synchronized (liveEntries) {
this.liveEntries.replace(old, de);
if (pendingKrfTags != null && de.getVersionStamp() != null) {
// Remember the version tag of the entry as it was written to the crf.
pendingKrfTags.remove(old);
pendingKrfTags.put(de, new CompactVersionHolder(de.getVersionStamp()));
}
}
}
@Override
public boolean rmLive(DiskEntry de, Oplog oplog) {
synchronized (liveEntries) {
boolean removed = this.liveEntries.remove(de);
if (removed && pendingKrfTags != null) {
pendingKrfTags.remove(de);
}
if (removed) {
oplog.decLiveCount();
}
return removed;
}
}
@Override
public DiskEntry getNextLiveEntry() {
DiskEntry result = this.liveEntries.getPrev();
if (result == this.liveEntries) {
result = null;
}
return result;
}
@Override
public long clear(RegionVersionVector rvv) {
synchronized (this.liveEntries) {
return this.liveEntries.clear(rvv, this.pendingKrfTags);
}
}
/**
* Return true if we are the first guy to set it to true
*/
@Override
synchronized public boolean testAndSetUnrecovered() {
boolean result = super.testAndSetUnrecovered();
if (result) {
this.liveEntries.clear();
}
return result;
}
public int addLiveEntriesToList(KRFEntry[] liveEntries, int idx) {
synchronized (liveEntries) {
int result = this.liveEntries.addLiveEntriesToList(liveEntries, idx, getDiskRegion(), pendingKrfTags);
return result;
}
}
public void afterKrfCreated() {
synchronized (liveEntries) {
this.pendingKrfTags = null;
}
}
}
/**
* Used during offline compaction to hold information that may need to be
* copied forward.
*/
private static class CompactionRecord {
private final byte[] keyBytes;
private long offset;
public CompactionRecord(byte[] kb, long offset) {
this.keyBytes = kb;
this.offset = offset;
}
public void update(long offset) {
this.offset = offset;
}
public byte[] getKeyBytes() {
return this.keyBytes;
}
public long getOffset() {
return this.offset;
}
}
/**
* Mpa of OplogEntryIds (longs). Memory is optimized by using an int[] for ids
* in the unsigned int range.
*/
static class OplogEntryIdMap {
private final Int2ObjectOpenHashMap ints = new Int2ObjectOpenHashMap((int) DiskStoreImpl.INVALID_ID);
private final Long2ObjectOpenHashMap longs = new Long2ObjectOpenHashMap((int)DiskStoreImpl.INVALID_ID);
public Object put(long id, Object v) {
Object result;
if (id == 0) {
throw new IllegalArgumentException();
} else if (id > 0 && id <= 0x00000000FFFFFFFFL) {
result = this.ints.put((int) id, v);
} else {
result = this.longs.put(id, v);
}
return result;
}
public int size() {
return this.ints.size() + this.longs.size();
}
public Object get(long id) {
Object result;
if (id >= 0 && id <= 0x00000000FFFFFFFFL) {
result = this.ints.get((int) id);
} else {
result = this.longs.get(id);
}
return result;
}
public Iterator iterator() {
return new Iterator();
}
public class Iterator {
private boolean doingInt = true;
ObjectIterator<Int2ObjectMap.Entry <?>> intIt = ints.int2ObjectEntrySet().fastIterator();
ObjectIterator<Long2ObjectMap.Entry <?>> longIt = longs.long2ObjectEntrySet().fastIterator();
Int2ObjectMap.Entry<?> nextIntEntry;
Long2ObjectMap.Entry<?> nextLongEntry;
public boolean hasNext() {
if (this.intIt.hasNext()) {
return true;
} else {
doingInt = false;
return this.longIt.hasNext();
}
}
public void advance() {
if (doingInt) {
nextIntEntry = intIt.next();
} else {
nextLongEntry = longIt.next();
}
}
public long key() {
if (doingInt) {
return nextIntEntry.getKey();
} else {
return nextLongEntry.getKey();
}
}
public Object value() {
if (doingInt) {
return nextIntEntry.getValue();
} else {
return nextLongEntry.getValue();
}
}
}
}
void finishKrf() {
createKrf(false);
}
void prepareForClose() {
try {
finishKrf();
} catch (CancelException e) {
// workaround for 50465
if (logger.isDebugEnabled()) {
logger.debug("Got a cancel exception while creating a krf during shutown", e);
}
}
}
private Object deserializeKey(byte[] keyBytes, final Version version, final ByteArrayDataInput in) {
if (!getParent().isOffline() || !PdxWriterImpl.isPdx(keyBytes)) {
return EntryEventImpl.deserialize(keyBytes, version, in);
} else {
return new RawByteKey(keyBytes);
}
}
/**
* If this OpLog is from an older version of the product, then return that
* {@link Version} else return null.
*/
public Version getProductVersionIfOld() {
final Version version = this.gfversion;
if (version == null) {
// check for the case of diskstore upgrade from 6.6 to >= 7.0
if (getParent().isUpgradeVersionOnly()) {
// assume previous release version
return Version.GFE_66;
} else {
return null;
}
} else if (version == Version.CURRENT) {
return null;
} else {
// version changed so return that for VersionedDataStream
return version;
}
}
/**
* If this OpLog has data that was written by an older version of the product,
* then return that {@link Version} else return null.
*/
public Version getDataVersionIfOld() {
final Version version = this.dataVersion;
if (version == null) {
// check for the case of diskstore upgrade from 6.6 to >= 7.0
if (getParent().isUpgradeVersionOnly()) {
// assume previous release version
return Version.GFE_66;
} else {
return null;
}
} else if (version == Version.CURRENT) {
return null;
} else {
// version changed so return that for VersionedDataStream
return version;
}
}
/**
* Used in offline mode to prevent pdx deserialization of keys. The raw bytes
* are a serialized pdx.
*
* @author darrel
* @since 6.6
*/
private static class RawByteKey implements Sendable {
final byte[] bytes;
final int hashCode;
public RawByteKey(byte[] keyBytes) {
this.bytes = keyBytes;
this.hashCode = Arrays.hashCode(keyBytes);
}
@Override
public int hashCode() {
return this.hashCode;
}
@Override
public boolean equals(Object other) {
if (!(other instanceof RawByteKey)) {
return false;
}
return Arrays.equals(this.bytes, ((RawByteKey) other).bytes);
}
public void sendTo(DataOutput out) throws IOException {
out.write(this.bytes);
}
}
/**
* Enumeration of operation log file types.
*
* @author rholmes
*/
enum OplogFileType {
OPLOG_CRF, // Creates and updates
OPLOG_DRF, // Deletes
OPLOG_KRF // Keys
}
/**
* Enumeration of the possible results of the okToSkipModifyRecord
*
* @author dsmith
*
*/
private static enum OkToSkipResult {
SKIP_RECORD, // Skip reading the key and value
SKIP_VALUE, // skip reading just the value
DONT_SKIP; // don't skip the record
public boolean skip() {
return this != DONT_SKIP;
}
public boolean skipKey() {
return this == SKIP_RECORD;
}
}
}