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apache / hbase / 17ebf917ba354e4632b726323b2b32af3aa6c8de / . / hbase-server / src / main / java / org / apache / hadoop / hbase / regionserver / HRegionServer.java
blob: 8abede5b272a4615bbde5f32a36a7a209a37d411 [file] [log] [blame]
/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.hadoop.hbase.regionserver;
import static org.apache.hadoop.hbase.HConstants.DEFAULT_HBASE_SPLIT_COORDINATED_BY_ZK;
import static org.apache.hadoop.hbase.HConstants.DEFAULT_HBASE_SPLIT_WAL_MAX_SPLITTER;
import static org.apache.hadoop.hbase.HConstants.HBASE_SPLIT_WAL_COORDINATED_BY_ZK;
import static org.apache.hadoop.hbase.HConstants.HBASE_SPLIT_WAL_MAX_SPLITTER;
import static org.apache.hadoop.hbase.util.DNS.RS_HOSTNAME_KEY;
import java.io.IOException;
import java.lang.management.MemoryType;
import java.lang.management.MemoryUsage;
import java.lang.reflect.Constructor;
import java.net.BindException;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.time.Duration;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Objects;
import java.util.Optional;
import java.util.Set;
import java.util.SortedMap;
import java.util.Timer;
import java.util.TimerTask;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentSkipListMap;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;
import java.util.concurrent.locks.ReentrantReadWriteLock;
import java.util.stream.Collectors;
import javax.management.MalformedObjectNameException;
import javax.servlet.http.HttpServlet;
import org.apache.commons.lang3.RandomUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.commons.lang3.SystemUtils;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hbase.Abortable;
import org.apache.hadoop.hbase.CacheEvictionStats;
import org.apache.hadoop.hbase.CallQueueTooBigException;
import org.apache.hadoop.hbase.ChoreService;
import org.apache.hadoop.hbase.ClockOutOfSyncException;
import org.apache.hadoop.hbase.CoordinatedStateManager;
import org.apache.hadoop.hbase.DoNotRetryIOException;
import org.apache.hadoop.hbase.ExecutorStatusChore;
import org.apache.hadoop.hbase.HBaseConfiguration;
import org.apache.hadoop.hbase.HBaseInterfaceAudience;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.HDFSBlocksDistribution;
import org.apache.hadoop.hbase.HealthCheckChore;
import org.apache.hadoop.hbase.MetaTableAccessor;
import org.apache.hadoop.hbase.NotServingRegionException;
import org.apache.hadoop.hbase.PleaseHoldException;
import org.apache.hadoop.hbase.ScheduledChore;
import org.apache.hadoop.hbase.ServerName;
import org.apache.hadoop.hbase.Stoppable;
import org.apache.hadoop.hbase.TableDescriptors;
import org.apache.hadoop.hbase.TableName;
import org.apache.hadoop.hbase.YouAreDeadException;
import org.apache.hadoop.hbase.ZNodeClearer;
import org.apache.hadoop.hbase.client.AsyncClusterConnection;
import org.apache.hadoop.hbase.client.ClusterConnectionFactory;
import org.apache.hadoop.hbase.client.Connection;
import org.apache.hadoop.hbase.client.ConnectionFactory;
import org.apache.hadoop.hbase.client.ConnectionUtils;
import org.apache.hadoop.hbase.client.RegionInfo;
import org.apache.hadoop.hbase.client.RegionInfoBuilder;
import org.apache.hadoop.hbase.client.locking.EntityLock;
import org.apache.hadoop.hbase.client.locking.LockServiceClient;
import org.apache.hadoop.hbase.conf.ConfigurationManager;
import org.apache.hadoop.hbase.conf.ConfigurationObserver;
import org.apache.hadoop.hbase.coordination.ZkCoordinatedStateManager;
import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
import org.apache.hadoop.hbase.exceptions.RegionMovedException;
import org.apache.hadoop.hbase.exceptions.RegionOpeningException;
import org.apache.hadoop.hbase.exceptions.UnknownProtocolException;
import org.apache.hadoop.hbase.executor.ExecutorService;
import org.apache.hadoop.hbase.executor.ExecutorType;
import org.apache.hadoop.hbase.fs.HFileSystem;
import org.apache.hadoop.hbase.http.InfoServer;
import org.apache.hadoop.hbase.io.hfile.BlockCache;
import org.apache.hadoop.hbase.io.hfile.BlockCacheFactory;
import org.apache.hadoop.hbase.io.hfile.HFile;
import org.apache.hadoop.hbase.io.util.MemorySizeUtil;
import org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils;
import org.apache.hadoop.hbase.ipc.NettyRpcClientConfigHelper;
import org.apache.hadoop.hbase.ipc.RpcClient;
import org.apache.hadoop.hbase.ipc.RpcServer;
import org.apache.hadoop.hbase.ipc.RpcServerInterface;
import org.apache.hadoop.hbase.ipc.ServerNotRunningYetException;
import org.apache.hadoop.hbase.ipc.ServerRpcController;
import org.apache.hadoop.hbase.log.HBaseMarkers;
import org.apache.hadoop.hbase.master.HMaster;
import org.apache.hadoop.hbase.master.LoadBalancer;
import org.apache.hadoop.hbase.master.MasterRpcServicesVersionWrapper;
import org.apache.hadoop.hbase.master.RegionState;
import org.apache.hadoop.hbase.master.balancer.BaseLoadBalancer;
import org.apache.hadoop.hbase.mob.MobFileCache;
import org.apache.hadoop.hbase.namequeues.NamedQueueRecorder;
import org.apache.hadoop.hbase.namequeues.SlowLogTableOpsChore;
import org.apache.hadoop.hbase.procedure.RegionServerProcedureManagerHost;
import org.apache.hadoop.hbase.procedure2.RSProcedureCallable;
import org.apache.hadoop.hbase.quotas.FileSystemUtilizationChore;
import org.apache.hadoop.hbase.quotas.QuotaUtil;
import org.apache.hadoop.hbase.quotas.RegionServerRpcQuotaManager;
import org.apache.hadoop.hbase.quotas.RegionServerSpaceQuotaManager;
import org.apache.hadoop.hbase.quotas.RegionSize;
import org.apache.hadoop.hbase.quotas.RegionSizeStore;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionConfiguration;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionLifeCycleTracker;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionProgress;
import org.apache.hadoop.hbase.regionserver.compactions.CompactionRequester;
import org.apache.hadoop.hbase.regionserver.handler.CloseMetaHandler;
import org.apache.hadoop.hbase.regionserver.handler.CloseRegionHandler;
import org.apache.hadoop.hbase.regionserver.handler.RSProcedureHandler;
import org.apache.hadoop.hbase.regionserver.handler.RegionReplicaFlushHandler;
import org.apache.hadoop.hbase.regionserver.throttle.FlushThroughputControllerFactory;
import org.apache.hadoop.hbase.regionserver.throttle.ThroughputController;
import org.apache.hadoop.hbase.replication.regionserver.ReplicationLoad;
import org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceInterface;
import org.apache.hadoop.hbase.replication.regionserver.ReplicationStatus;
import org.apache.hadoop.hbase.security.SecurityConstants;
import org.apache.hadoop.hbase.security.Superusers;
import org.apache.hadoop.hbase.security.User;
import org.apache.hadoop.hbase.security.UserProvider;
import org.apache.hadoop.hbase.security.access.AccessChecker;
import org.apache.hadoop.hbase.security.access.ZKPermissionWatcher;
import org.apache.hadoop.hbase.trace.SpanReceiverHost;
import org.apache.hadoop.hbase.trace.TraceUtil;
import org.apache.hadoop.hbase.util.Addressing;
import org.apache.hadoop.hbase.util.Bytes;
import org.apache.hadoop.hbase.util.CommonFSUtils;
import org.apache.hadoop.hbase.util.CompressionTest;
import org.apache.hadoop.hbase.util.EnvironmentEdgeManager;
import org.apache.hadoop.hbase.util.FSTableDescriptors;
import org.apache.hadoop.hbase.util.FSUtils;
import org.apache.hadoop.hbase.util.FutureUtils;
import org.apache.hadoop.hbase.util.JvmPauseMonitor;
import org.apache.hadoop.hbase.util.NettyEventLoopGroupConfig;
import org.apache.hadoop.hbase.util.Pair;
import org.apache.hadoop.hbase.util.RetryCounter;
import org.apache.hadoop.hbase.util.RetryCounterFactory;
import org.apache.hadoop.hbase.util.ServerRegionReplicaUtil;
import org.apache.hadoop.hbase.util.Sleeper;
import org.apache.hadoop.hbase.util.Threads;
import org.apache.hadoop.hbase.util.VersionInfo;
import org.apache.hadoop.hbase.wal.AbstractFSWALProvider;
import org.apache.hadoop.hbase.wal.NettyAsyncFSWALConfigHelper;
import org.apache.hadoop.hbase.wal.WAL;
import org.apache.hadoop.hbase.wal.WALFactory;
import org.apache.hadoop.hbase.wal.WALProvider;
import org.apache.hadoop.hbase.zookeeper.ClusterStatusTracker;
import org.apache.hadoop.hbase.zookeeper.MasterAddressTracker;
import org.apache.hadoop.hbase.zookeeper.MetaTableLocator;
import org.apache.hadoop.hbase.zookeeper.ZKClusterId;
import org.apache.hadoop.hbase.zookeeper.ZKNodeTracker;
import org.apache.hadoop.hbase.zookeeper.ZKUtil;
import org.apache.hadoop.hbase.zookeeper.ZKWatcher;
import org.apache.hadoop.hbase.zookeeper.ZNodePaths;
import org.apache.hadoop.ipc.RemoteException;
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.yetus.audience.InterfaceAudience;
import org.apache.zookeeper.KeeperException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import sun.misc.Signal;
import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting;
import org.apache.hbase.thirdparty.com.google.common.base.Preconditions;
import org.apache.hbase.thirdparty.com.google.common.base.Throwables;
import org.apache.hbase.thirdparty.com.google.common.cache.Cache;
import org.apache.hbase.thirdparty.com.google.common.cache.CacheBuilder;
import org.apache.hbase.thirdparty.com.google.common.collect.Maps;
import org.apache.hbase.thirdparty.com.google.protobuf.BlockingRpcChannel;
import org.apache.hbase.thirdparty.com.google.protobuf.Descriptors.MethodDescriptor;
import org.apache.hbase.thirdparty.com.google.protobuf.Descriptors.ServiceDescriptor;
import org.apache.hbase.thirdparty.com.google.protobuf.Message;
import org.apache.hbase.thirdparty.com.google.protobuf.RpcController;
import org.apache.hbase.thirdparty.com.google.protobuf.Service;
import org.apache.hbase.thirdparty.com.google.protobuf.ServiceException;
import org.apache.hbase.thirdparty.com.google.protobuf.TextFormat;
import org.apache.hbase.thirdparty.com.google.protobuf.UnsafeByteOperations;
import org.apache.hadoop.hbase.shaded.protobuf.ProtobufUtil;
import org.apache.hadoop.hbase.shaded.protobuf.RequestConverter;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceCall;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClientProtos.CoprocessorServiceResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.RegionLoad;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.RegionStoreSequenceIds;
import org.apache.hadoop.hbase.shaded.protobuf.generated.ClusterStatusProtos.UserLoad;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.Coprocessor;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.Coprocessor.Builder;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.NameStringPair;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionServerInfo;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier;
import org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.RegionSpecifier.RegionSpecifierType;
import org.apache.hadoop.hbase.shaded.protobuf.generated.LockServiceProtos.LockService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.GetLastFlushedSequenceIdRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.GetLastFlushedSequenceIdResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerReportRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStartupResponse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionServerStatusService;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionSpaceUse;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionSpaceUseReportRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.RegionStateTransition.TransitionCode;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportProcedureDoneRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRSFatalErrorRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionRequest;
import org.apache.hadoop.hbase.shaded.protobuf.generated.RegionServerStatusProtos.ReportRegionStateTransitionResponse;
/**
* HRegionServer makes a set of HRegions available to clients. It checks in with
* the HMaster. There are many HRegionServers in a single HBase deployment.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.TOOLS)
@SuppressWarnings({ "deprecation"})
public class HRegionServer extends Thread implements
RegionServerServices, LastSequenceId, ConfigurationObserver {
private static final Logger LOG = LoggerFactory.getLogger(HRegionServer.class);
/**
* For testing only! Set to true to skip notifying region assignment to master .
*/
@VisibleForTesting
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="MS_SHOULD_BE_FINAL")
public static boolean TEST_SKIP_REPORTING_TRANSITION = false;
/**
* A map from RegionName to current action in progress. Boolean value indicates:
* true - if open region action in progress
* false - if close region action in progress
*/
private final ConcurrentMap<byte[], Boolean> regionsInTransitionInRS =
new ConcurrentSkipListMap<>(Bytes.BYTES_COMPARATOR);
/**
* Used to cache the open/close region procedures which already submitted.
* See {@link #submitRegionProcedure(long)}.
*/
private final ConcurrentMap<Long, Long> submittedRegionProcedures = new ConcurrentHashMap<>();
/**
* Used to cache the open/close region procedures which already executed.
* See {@link #submitRegionProcedure(long)}.
*/
private final Cache<Long, Long> executedRegionProcedures =
CacheBuilder.newBuilder().expireAfterAccess(600, TimeUnit.SECONDS).build();
/**
* Used to cache the moved-out regions
*/
private final Cache<String, MovedRegionInfo> movedRegionInfoCache =
CacheBuilder.newBuilder().expireAfterWrite(movedRegionCacheExpiredTime(),
TimeUnit.MILLISECONDS).build();
private MemStoreFlusher cacheFlusher;
private HeapMemoryManager hMemManager;
/**
* The asynchronous cluster connection to be shared by services.
*/
protected AsyncClusterConnection asyncClusterConnection;
/**
* Go here to get table descriptors.
*/
protected TableDescriptors tableDescriptors;
// Replication services. If no replication, this handler will be null.
private ReplicationSourceService replicationSourceHandler;
private ReplicationSinkService replicationSinkHandler;
// Compactions
public CompactSplit compactSplitThread;
/**
* Map of regions currently being served by this region server. Key is the
* encoded region name. All access should be synchronized.
*/
private final Map<String, HRegion> onlineRegions = new ConcurrentHashMap<>();
/**
* Lock for gating access to {@link #onlineRegions}.
* TODO: If this map is gated by a lock, does it need to be a ConcurrentHashMap?
*/
private final ReentrantReadWriteLock onlineRegionsLock = new ReentrantReadWriteLock();
/**
* Map of encoded region names to the DataNode locations they should be hosted on
* We store the value as InetSocketAddress since this is used only in HDFS
* API (create() that takes favored nodes as hints for placing file blocks).
* We could have used ServerName here as the value class, but we'd need to
* convert it to InetSocketAddress at some point before the HDFS API call, and
* it seems a bit weird to store ServerName since ServerName refers to RegionServers
* and here we really mean DataNode locations.
*/
private final Map<String, InetSocketAddress[]> regionFavoredNodesMap = new ConcurrentHashMap<>();
private LeaseManager leaseManager;
// Instance of the hbase executor executorService.
protected ExecutorService executorService;
private volatile boolean dataFsOk;
private HFileSystem dataFs;
private HFileSystem walFs;
// Set when a report to the master comes back with a message asking us to
// shutdown. Also set by call to stop when debugging or running unit tests
// of HRegionServer in isolation.
private volatile boolean stopped = false;
// Go down hard. Used if file system becomes unavailable and also in
// debugging and unit tests.
private AtomicBoolean abortRequested;
static final String ABORT_TIMEOUT = "hbase.regionserver.abort.timeout";
// Default abort timeout is 1200 seconds for safe
private static final long DEFAULT_ABORT_TIMEOUT = 1200000;
// Will run this task when abort timeout
static final String ABORT_TIMEOUT_TASK = "hbase.regionserver.abort.timeout.task";
// A state before we go into stopped state. At this stage we're closing user
// space regions.
private boolean stopping = false;
private volatile boolean killed = false;
private volatile boolean shutDown = false;
protected final Configuration conf;
private Path dataRootDir;
private Path walRootDir;
private final int threadWakeFrequency;
final int msgInterval;
private static final String PERIOD_COMPACTION = "hbase.regionserver.compaction.check.period";
private final int compactionCheckFrequency;
private static final String PERIOD_FLUSH = "hbase.regionserver.flush.check.period";
private final int flushCheckFrequency;
// Stub to do region server status calls against the master.
private volatile RegionServerStatusService.BlockingInterface rssStub;
private volatile LockService.BlockingInterface lockStub;
// RPC client. Used to make the stub above that does region server status checking.
private RpcClient rpcClient;
private UncaughtExceptionHandler uncaughtExceptionHandler;
// Info server. Default access so can be used by unit tests. REGIONSERVER
// is name of the webapp and the attribute name used stuffing this instance
// into web context.
protected InfoServer infoServer;
private JvmPauseMonitor pauseMonitor;
/** region server process name */
public static final String REGIONSERVER = "regionserver";
private MetricsRegionServer metricsRegionServer;
MetricsRegionServerWrapperImpl metricsRegionServerImpl;
private SpanReceiverHost spanReceiverHost;
/**
* ChoreService used to schedule tasks that we want to run periodically
*/
private ChoreService choreService;
/**
* Check for compactions requests.
*/
private ScheduledChore compactionChecker;
/**
* Check for flushes
*/
private ScheduledChore periodicFlusher;
private volatile WALFactory walFactory;
private LogRoller walRoller;
// A thread which calls reportProcedureDone
private RemoteProcedureResultReporter procedureResultReporter;
// flag set after we're done setting up server threads
final AtomicBoolean online = new AtomicBoolean(false);
// zookeeper connection and watcher
protected final ZKWatcher zooKeeper;
// master address tracker
private final MasterAddressTracker masterAddressTracker;
// Cluster Status Tracker
protected final ClusterStatusTracker clusterStatusTracker;
// Log Splitting Worker
private SplitLogWorker splitLogWorker;
// A sleeper that sleeps for msgInterval.
protected final Sleeper sleeper;
private final int shortOperationTimeout;
private final RegionServerAccounting regionServerAccounting;
private SlowLogTableOpsChore slowLogTableOpsChore = null;
// Block cache
private BlockCache blockCache;
// The cache for mob files
private MobFileCache mobFileCache;
/** The health check chore. */
private HealthCheckChore healthCheckChore;
/** The Executor status collect chore. */
private ExecutorStatusChore executorStatusChore;
/** The nonce manager chore. */
private ScheduledChore nonceManagerChore;
private Map<String, Service> coprocessorServiceHandlers = Maps.newHashMap();
/**
* The server name the Master sees us as. Its made from the hostname the
* master passes us, port, and server startcode. Gets set after registration
* against Master.
*/
protected ServerName serverName;
/**
* hostname specified by hostname config
*/
protected String useThisHostnameInstead;
/**
* HBASE-18226: This config and hbase.regionserver.hostname are mutually exclusive.
* Exception will be thrown if both are used.
*/
@InterfaceAudience.LimitedPrivate(HBaseInterfaceAudience.CONFIG)
final static String RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY =
"hbase.regionserver.hostname.disable.master.reversedns";
/**
* This servers startcode.
*/
protected final long startcode;
/**
* Unique identifier for the cluster we are a part of.
*/
protected String clusterId;
// chore for refreshing store files for secondary regions
private StorefileRefresherChore storefileRefresher;
private RegionServerCoprocessorHost rsHost;
private RegionServerProcedureManagerHost rspmHost;
private RegionServerRpcQuotaManager rsQuotaManager;
private RegionServerSpaceQuotaManager rsSpaceQuotaManager;
/**
* Nonce manager. Nonces are used to make operations like increment and append idempotent
* in the case where client doesn't receive the response from a successful operation and
* retries. We track the successful ops for some time via a nonce sent by client and handle
* duplicate operations (currently, by failing them; in future we might use MVCC to return
* result). Nonces are also recovered from WAL during, recovery; however, the caveats (from
* HBASE-3787) are:
* - WAL recovery is optimized, and under high load we won't read nearly nonce-timeout worth
* of past records. If we don't read the records, we don't read and recover the nonces.
* Some WALs within nonce-timeout at recovery may not even be present due to rolling/cleanup.
* - There's no WAL recovery during normal region move, so nonces will not be transfered.
* We can have separate additional "Nonce WAL". It will just contain bunch of numbers and
* won't be flushed on main path - because WAL itself also contains nonces, if we only flush
* it before memstore flush, for a given nonce we will either see it in the WAL (if it was
* never flushed to disk, it will be part of recovery), or we'll see it as part of the nonce
* log (or both occasionally, which doesn't matter). Nonce log file can be deleted after the
* latest nonce in it expired. It can also be recovered during move.
*/
final ServerNonceManager nonceManager;
private UserProvider userProvider;
protected final RSRpcServices rpcServices;
private CoordinatedStateManager csm;
/**
* Configuration manager is used to register/deregister and notify the configuration observers
* when the regionserver is notified that there was a change in the on disk configs.
*/
protected final ConfigurationManager configurationManager;
@VisibleForTesting
CompactedHFilesDischarger compactedFileDischarger;
private volatile ThroughputController flushThroughputController;
private SecureBulkLoadManager secureBulkLoadManager;
private FileSystemUtilizationChore fsUtilizationChore;
private final NettyEventLoopGroupConfig eventLoopGroupConfig;
/**
* Provide online slow log responses from ringbuffer
*/
private NamedQueueRecorder namedQueueRecorder = null;
/**
* True if this RegionServer is coming up in a cluster where there is no Master;
* means it needs to just come up and make do without a Master to talk to: e.g. in test or
* HRegionServer is doing other than its usual duties: e.g. as an hollowed-out host whose only
* purpose is as a Replication-stream sink; see HBASE-18846 for more.
* TODO: can this replace {@link #TEST_SKIP_REPORTING_TRANSITION} ?
*/
private final boolean masterless;
private static final String MASTERLESS_CONFIG_NAME = "hbase.masterless";
/**regionserver codec list **/
private static final String REGIONSERVER_CODEC = "hbase.regionserver.codecs";
// A timer to shutdown the process if abort takes too long
private Timer abortMonitor;
/**
* Starts a HRegionServer at the default location.
* <p/>
* Don't start any services or managers in here in the Constructor.
* Defer till after we register with the Master as much as possible. See {@link #startServices}.
*/
public HRegionServer(final Configuration conf) throws IOException {
super("RegionServer"); // thread name
TraceUtil.initTracer(conf);
try {
this.startcode = System.currentTimeMillis();
this.conf = conf;
this.dataFsOk = true;
this.masterless = conf.getBoolean(MASTERLESS_CONFIG_NAME, false);
this.eventLoopGroupConfig = setupNetty(this.conf);
MemorySizeUtil.checkForClusterFreeHeapMemoryLimit(this.conf);
HFile.checkHFileVersion(this.conf);
checkCodecs(this.conf);
this.userProvider = UserProvider.instantiate(conf);
FSUtils.setupShortCircuitRead(this.conf);
// Disable usage of meta replicas in the regionserver
this.conf.setBoolean(HConstants.USE_META_REPLICAS, false);
// Config'ed params
this.threadWakeFrequency = conf.getInt(HConstants.THREAD_WAKE_FREQUENCY, 10 * 1000);
this.compactionCheckFrequency = conf.getInt(PERIOD_COMPACTION, this.threadWakeFrequency);
this.flushCheckFrequency = conf.getInt(PERIOD_FLUSH, this.threadWakeFrequency);
this.msgInterval = conf.getInt("hbase.regionserver.msginterval", 3 * 1000);
this.sleeper = new Sleeper(this.msgInterval, this);
boolean isNoncesEnabled = conf.getBoolean(HConstants.HBASE_RS_NONCES_ENABLED, true);
this.nonceManager = isNoncesEnabled ? new ServerNonceManager(this.conf) : null;
this.shortOperationTimeout = conf.getInt(HConstants.HBASE_RPC_SHORTOPERATION_TIMEOUT_KEY,
HConstants.DEFAULT_HBASE_RPC_SHORTOPERATION_TIMEOUT);
this.abortRequested = new AtomicBoolean(false);
this.stopped = false;
initNamedQueueRecorder(conf);
rpcServices = createRpcServices();
useThisHostnameInstead = getUseThisHostnameInstead(conf);
String hostName =
StringUtils.isBlank(useThisHostnameInstead) ? this.rpcServices.isa.getHostName()
: this.useThisHostnameInstead;
serverName = ServerName.valueOf(hostName, this.rpcServices.isa.getPort(), this.startcode);
// login the zookeeper client principal (if using security)
ZKUtil.loginClient(this.conf, HConstants.ZK_CLIENT_KEYTAB_FILE,
HConstants.ZK_CLIENT_KERBEROS_PRINCIPAL, hostName);
// login the server principal (if using secure Hadoop)
login(userProvider, hostName);
// init superusers and add the server principal (if using security)
// or process owner as default super user.
Superusers.initialize(conf);
regionServerAccounting = new RegionServerAccounting(conf);
boolean isMasterNotCarryTable =
this instanceof HMaster && !LoadBalancer.isTablesOnMaster(conf);
// no need to instantiate block cache and mob file cache when master not carry table
if (!isMasterNotCarryTable) {
blockCache = BlockCacheFactory.createBlockCache(conf);
mobFileCache = new MobFileCache(conf);
}
uncaughtExceptionHandler =
(t, e) -> abort("Uncaught exception in executorService thread " + t.getName(), e);
initializeFileSystem();
spanReceiverHost = SpanReceiverHost.getInstance(getConfiguration());
this.configurationManager = new ConfigurationManager();
setupWindows(getConfiguration(), getConfigurationManager());
// Some unit tests don't need a cluster, so no zookeeper at all
// Open connection to zookeeper and set primary watcher
zooKeeper = new ZKWatcher(conf, getProcessName() + ":" + rpcServices.isa.getPort(), this,
canCreateBaseZNode());
// If no master in cluster, skip trying to track one or look for a cluster status.
if (!this.masterless) {
if (conf.getBoolean(HBASE_SPLIT_WAL_COORDINATED_BY_ZK,
DEFAULT_HBASE_SPLIT_COORDINATED_BY_ZK)) {
this.csm = new ZkCoordinatedStateManager(this);
}
masterAddressTracker = new MasterAddressTracker(getZooKeeper(), this);
masterAddressTracker.start();
clusterStatusTracker = new ClusterStatusTracker(zooKeeper, this);
clusterStatusTracker.start();
} else {
masterAddressTracker = null;
clusterStatusTracker = null;
}
this.rpcServices.start(zooKeeper);
// This violates 'no starting stuff in Constructor' but Master depends on the below chore
// and executor being created and takes a different startup route. Lots of overlap between HRS
// and M (An M IS A HRS now). Need to refactor so less duplication between M and its super
// Master expects Constructor to put up web servers. Ugh.
// class HRS. TODO.
this.choreService = new ChoreService(getName(), true);
this.executorService = new ExecutorService(getName());
putUpWebUI();
} catch (Throwable t) {
// Make sure we log the exception. HRegionServer is often started via reflection and the
// cause of failed startup is lost.
LOG.error("Failed construction RegionServer", t);
throw t;
}
}
private void initNamedQueueRecorder(Configuration conf) {
if (!(this instanceof HMaster)) {
final boolean isOnlineLogProviderEnabled = conf.getBoolean(
HConstants.SLOW_LOG_BUFFER_ENABLED_KEY,
HConstants.DEFAULT_ONLINE_LOG_PROVIDER_ENABLED);
if (isOnlineLogProviderEnabled) {
this.namedQueueRecorder = NamedQueueRecorder.getInstance(this.conf);
}
} else {
final boolean isBalancerDecisionRecording = conf
.getBoolean(BaseLoadBalancer.BALANCER_DECISION_BUFFER_ENABLED,
BaseLoadBalancer.DEFAULT_BALANCER_DECISION_BUFFER_ENABLED);
if (isBalancerDecisionRecording) {
this.namedQueueRecorder = NamedQueueRecorder.getInstance(this.conf);
}
}
}
// HMaster should override this method to load the specific config for master
protected String getUseThisHostnameInstead(Configuration conf) throws IOException {
String hostname = conf.get(RS_HOSTNAME_KEY);
if (conf.getBoolean(RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY, false)) {
if (!StringUtils.isBlank(hostname)) {
String msg = RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY + " and " + RS_HOSTNAME_KEY +
" are mutually exclusive. Do not set " + RS_HOSTNAME_DISABLE_MASTER_REVERSEDNS_KEY +
" to true while " + RS_HOSTNAME_KEY + " is used";
throw new IOException(msg);
} else {
return rpcServices.isa.getHostName();
}
} else {
return hostname;
}
}
/**
* If running on Windows, do windows-specific setup.
*/
private static void setupWindows(final Configuration conf, ConfigurationManager cm) {
if (!SystemUtils.IS_OS_WINDOWS) {
Signal.handle(new Signal("HUP"), signal -> {
conf.reloadConfiguration();
cm.notifyAllObservers(conf);
});
}
}
private static NettyEventLoopGroupConfig setupNetty(Configuration conf) {
// Initialize netty event loop group at start as we may use it for rpc server, rpc client & WAL.
NettyEventLoopGroupConfig nelgc =
new NettyEventLoopGroupConfig(conf, "RS-EventLoopGroup");
NettyRpcClientConfigHelper.setEventLoopConfig(conf, nelgc.group(), nelgc.clientChannelClass());
NettyAsyncFSWALConfigHelper.setEventLoopConfig(conf, nelgc.group(), nelgc.clientChannelClass());
return nelgc;
}
private void initializeFileSystem() throws IOException {
// Get fs instance used by this RS. Do we use checksum verification in the hbase? If hbase
// checksum verification enabled, then automatically switch off hdfs checksum verification.
boolean useHBaseChecksum = conf.getBoolean(HConstants.HBASE_CHECKSUM_VERIFICATION, true);
CommonFSUtils.setFsDefault(this.conf, CommonFSUtils.getWALRootDir(this.conf));
this.walFs = new HFileSystem(this.conf, useHBaseChecksum);
this.walRootDir = CommonFSUtils.getWALRootDir(this.conf);
// Set 'fs.defaultFS' to match the filesystem on hbase.rootdir else
// underlying hadoop hdfs accessors will be going against wrong filesystem
// (unless all is set to defaults).
CommonFSUtils.setFsDefault(this.conf, CommonFSUtils.getRootDir(this.conf));
this.dataFs = new HFileSystem(this.conf, useHBaseChecksum);
this.dataRootDir = CommonFSUtils.getRootDir(this.conf);
this.tableDescriptors = new FSTableDescriptors(this.dataFs, this.dataRootDir,
!canUpdateTableDescriptor(), cacheTableDescriptor());
}
protected void login(UserProvider user, String host) throws IOException {
user.login(SecurityConstants.REGIONSERVER_KRB_KEYTAB_FILE,
SecurityConstants.REGIONSERVER_KRB_PRINCIPAL, host);
}
/**
* Wait for an active Master.
* See override in Master superclass for how it is used.
*/
protected void waitForMasterActive() {}
protected String getProcessName() {
return REGIONSERVER;
}
protected boolean canCreateBaseZNode() {
return this.masterless;
}
protected boolean canUpdateTableDescriptor() {
return false;
}
protected boolean cacheTableDescriptor() {
return false;
}
protected RSRpcServices createRpcServices() throws IOException {
return new RSRpcServices(this);
}
protected void configureInfoServer() {
infoServer.addUnprivilegedServlet("rs-status", "/rs-status", RSStatusServlet.class);
infoServer.setAttribute(REGIONSERVER, this);
}
protected Class<? extends HttpServlet> getDumpServlet() {
return RSDumpServlet.class;
}
@Override
public boolean registerService(Service instance) {
// No stacking of instances is allowed for a single executorService name
ServiceDescriptor serviceDesc = instance.getDescriptorForType();
String serviceName = CoprocessorRpcUtils.getServiceName(serviceDesc);
if (coprocessorServiceHandlers.containsKey(serviceName)) {
LOG.error("Coprocessor executorService " + serviceName +
" already registered, rejecting request from " + instance);
return false;
}
coprocessorServiceHandlers.put(serviceName, instance);
if (LOG.isDebugEnabled()) {
LOG.debug(
"Registered regionserver coprocessor executorService: executorService=" + serviceName);
}
return true;
}
private Configuration cleanupConfiguration() {
Configuration conf = this.conf;
// We use ZKConnectionRegistry for all the internal communication, primarily for these reasons:
// - Decouples RS and master life cycles. RegionServers can continue be up independent of
// masters' availability.
// - Configuration management for region servers (cluster internal) is much simpler when adding
// new masters or removing existing masters, since only clients' config needs to be updated.
// - We need to retain ZKConnectionRegistry for replication use anyway, so we just extend it for
// other internal connections too.
conf.set(HConstants.CLIENT_CONNECTION_REGISTRY_IMPL_CONF_KEY,
HConstants.ZK_CONNECTION_REGISTRY_CLASS);
if (conf.get(HConstants.CLIENT_ZOOKEEPER_QUORUM) != null) {
// Use server ZK cluster for server-issued connections, so we clone
// the conf and unset the client ZK related properties
conf = new Configuration(this.conf);
conf.unset(HConstants.CLIENT_ZOOKEEPER_QUORUM);
}
return conf;
}
/**
* Run test on configured codecs to make sure supporting libs are in place.
*/
private static void checkCodecs(final Configuration c) throws IOException {
// check to see if the codec list is available:
String [] codecs = c.getStrings(REGIONSERVER_CODEC, (String[])null);
if (codecs == null) return;
for (String codec : codecs) {
if (!CompressionTest.testCompression(codec)) {
throw new IOException("Compression codec " + codec +
" not supported, aborting RS construction");
}
}
}
public String getClusterId() {
return this.clusterId;
}
/**
* Setup our cluster connection if not already initialized.
*/
protected final synchronized void setupClusterConnection() throws IOException {
if (asyncClusterConnection == null) {
Configuration conf = cleanupConfiguration();
InetSocketAddress localAddress = new InetSocketAddress(this.rpcServices.isa.getAddress(), 0);
User user = userProvider.getCurrent();
asyncClusterConnection =
ClusterConnectionFactory.createAsyncClusterConnection(conf, localAddress, user);
}
}
/**
* All initialization needed before we go register with Master.<br>
* Do bare minimum. Do bulk of initializations AFTER we've connected to the Master.<br>
* In here we just put up the RpcServer, setup Connection, and ZooKeeper.
*/
private void preRegistrationInitialization() {
try {
initializeZooKeeper();
setupClusterConnection();
// Setup RPC client for master communication
this.rpcClient = asyncClusterConnection.getRpcClient();
} catch (Throwable t) {
// Call stop if error or process will stick around for ever since server
// puts up non-daemon threads.
this.rpcServices.stop();
abort("Initialization of RS failed. Hence aborting RS.", t);
}
}
/**
* Bring up connection to zk ensemble and then wait until a master for this cluster and then after
* that, wait until cluster 'up' flag has been set. This is the order in which master does things.
* <p>
* Finally open long-living server short-circuit connection.
*/
@edu.umd.cs.findbugs.annotations.SuppressWarnings(value="RV_RETURN_VALUE_IGNORED_BAD_PRACTICE",
justification="cluster Id znode read would give us correct response")
private void initializeZooKeeper() throws IOException, InterruptedException {
// Nothing to do in here if no Master in the mix.
if (this.masterless) {
return;
}
// Create the master address tracker, register with zk, and start it. Then
// block until a master is available. No point in starting up if no master
// running.
blockAndCheckIfStopped(this.masterAddressTracker);
// Wait on cluster being up. Master will set this flag up in zookeeper
// when ready.
blockAndCheckIfStopped(this.clusterStatusTracker);
// If we are HMaster then the cluster id should have already been set.
if (clusterId == null) {
// Retrieve clusterId
// Since cluster status is now up
// ID should have already been set by HMaster
try {
clusterId = ZKClusterId.readClusterIdZNode(this.zooKeeper);
if (clusterId == null) {
this.abort("Cluster ID has not been set");
}
LOG.info("ClusterId : " + clusterId);
} catch (KeeperException e) {
this.abort("Failed to retrieve Cluster ID", e);
}
}
waitForMasterActive();
if (isStopped() || isAborted()) {
return; // No need for further initialization
}
// watch for snapshots and other procedures
try {
rspmHost = new RegionServerProcedureManagerHost();
rspmHost.loadProcedures(conf);
rspmHost.initialize(this);
} catch (KeeperException e) {
this.abort("Failed to reach coordination cluster when creating procedure handler.", e);
}
}
/**
* Utilty method to wait indefinitely on a znode availability while checking
* if the region server is shut down
* @param tracker znode tracker to use
* @throws IOException any IO exception, plus if the RS is stopped
* @throws InterruptedException if the waiting thread is interrupted
*/
private void blockAndCheckIfStopped(ZKNodeTracker tracker)
throws IOException, InterruptedException {
while (tracker.blockUntilAvailable(this.msgInterval, false) == null) {
if (this.stopped) {
throw new IOException("Received the shutdown message while waiting.");
}
}
}
/**
* @return True if the cluster is up.
*/
@Override
public boolean isClusterUp() {
return this.masterless ||
(this.clusterStatusTracker != null && this.clusterStatusTracker.isClusterUp());
}
/**
* The HRegionServer sticks in this loop until closed.
*/
@Override
public void run() {
if (isStopped()) {
LOG.info("Skipping run; stopped");
return;
}
try {
// Do pre-registration initializations; zookeeper, lease threads, etc.
preRegistrationInitialization();
} catch (Throwable e) {
abort("Fatal exception during initialization", e);
}
try {
if (!isStopped() && !isAborted()) {
ShutdownHook.install(conf, dataFs, this, Thread.currentThread());
// Initialize the RegionServerCoprocessorHost now that our ephemeral
// node was created, in case any coprocessors want to use ZooKeeper
this.rsHost = new RegionServerCoprocessorHost(this, this.conf);
// Try and register with the Master; tell it we are here. Break if server is stopped or
// the clusterup flag is down or hdfs went wacky. Once registered successfully, go ahead and
// start up all Services. Use RetryCounter to get backoff in case Master is struggling to
// come up.
LOG.debug("About to register with Master.");
RetryCounterFactory rcf =
new RetryCounterFactory(Integer.MAX_VALUE, this.sleeper.getPeriod(), 1000 * 60 * 5);
RetryCounter rc = rcf.create();
while (keepLooping()) {
RegionServerStartupResponse w = reportForDuty();
if (w == null) {
long sleepTime = rc.getBackoffTimeAndIncrementAttempts();
LOG.warn("reportForDuty failed; sleeping {} ms and then retrying.", sleepTime);
this.sleeper.sleep(sleepTime);
} else {
handleReportForDutyResponse(w);
break;
}
}
}
if (!isStopped() && isHealthy()) {
// start the snapshot handler and other procedure handlers,
// since the server is ready to run
if (this.rspmHost != null) {
this.rspmHost.start();
}
// Start the Quota Manager
if (this.rsQuotaManager != null) {
rsQuotaManager.start(getRpcServer().getScheduler());
}
if (this.rsSpaceQuotaManager != null) {
this.rsSpaceQuotaManager.start();
}
}
// We registered with the Master. Go into run mode.
long lastMsg = System.currentTimeMillis();
long oldRequestCount = -1;
// The main run loop.
while (!isStopped() && isHealthy()) {
if (!isClusterUp()) {
if (onlineRegions.isEmpty()) {
stop("Exiting; cluster shutdown set and not carrying any regions");
} else if (!this.stopping) {
this.stopping = true;
LOG.info("Closing user regions");
closeUserRegions(this.abortRequested.get());
} else {
boolean allUserRegionsOffline = areAllUserRegionsOffline();
if (allUserRegionsOffline) {
// Set stopped if no more write requests tp meta tables
// since last time we went around the loop. Any open
// meta regions will be closed on our way out.
if (oldRequestCount == getWriteRequestCount()) {
stop("Stopped; only catalog regions remaining online");
break;
}
oldRequestCount = getWriteRequestCount();
} else {
// Make sure all regions have been closed -- some regions may
// have not got it because we were splitting at the time of
// the call to closeUserRegions.
closeUserRegions(this.abortRequested.get());
}
LOG.debug("Waiting on " + getOnlineRegionsAsPrintableString());
}
}
long now = System.currentTimeMillis();
if ((now - lastMsg) >= msgInterval) {
tryRegionServerReport(lastMsg, now);
lastMsg = System.currentTimeMillis();
}
if (!isStopped() && !isAborted()) {
this.sleeper.sleep();
}
} // for
} catch (Throwable t) {
if (!rpcServices.checkOOME(t)) {
String prefix = t instanceof YouAreDeadException? "": "Unhandled: ";
abort(prefix + t.getMessage(), t);
}
}
if (this.leaseManager != null) {
this.leaseManager.closeAfterLeasesExpire();
}
if (this.splitLogWorker != null) {
splitLogWorker.stop();
}
if (this.infoServer != null) {
LOG.info("Stopping infoServer");
try {
this.infoServer.stop();
} catch (Exception e) {
LOG.error("Failed to stop infoServer", e);
}
}
// Send cache a shutdown.
if (blockCache != null) {
blockCache.shutdown();
}
if (mobFileCache != null) {
mobFileCache.shutdown();
}
// Send interrupts to wake up threads if sleeping so they notice shutdown.
// TODO: Should we check they are alive? If OOME could have exited already
if (this.hMemManager != null) this.hMemManager.stop();
if (this.cacheFlusher != null) this.cacheFlusher.interruptIfNecessary();
if (this.compactSplitThread != null) this.compactSplitThread.interruptIfNecessary();
// Stop the snapshot and other procedure handlers, forcefully killing all running tasks
if (rspmHost != null) {
rspmHost.stop(this.abortRequested.get() || this.killed);
}
if (this.killed) {
// Just skip out w/o closing regions. Used when testing.
} else if (abortRequested.get()) {
if (this.dataFsOk) {
closeUserRegions(abortRequested.get()); // Don't leave any open file handles
}
LOG.info("aborting server " + this.serverName);
} else {
closeUserRegions(abortRequested.get());
LOG.info("stopping server " + this.serverName);
}
if (this.asyncClusterConnection != null) {
try {
this.asyncClusterConnection.close();
} catch (IOException e) {
// Although the {@link Closeable} interface throws an {@link
// IOException}, in reality, the implementation would never do that.
LOG.warn("Attempt to close server's AsyncClusterConnection failed.", e);
}
}
// Closing the compactSplit thread before closing meta regions
if (!this.killed && containsMetaTableRegions()) {
if (!abortRequested.get() || this.dataFsOk) {
if (this.compactSplitThread != null) {
this.compactSplitThread.join();
this.compactSplitThread = null;
}
closeMetaTableRegions(abortRequested.get());
}
}
if (!this.killed && this.dataFsOk) {
waitOnAllRegionsToClose(abortRequested.get());
LOG.info("stopping server " + this.serverName + "; all regions closed.");
}
// Stop the quota manager
if (rsQuotaManager != null) {
rsQuotaManager.stop();
}
if (rsSpaceQuotaManager != null) {
rsSpaceQuotaManager.stop();
rsSpaceQuotaManager = null;
}
// flag may be changed when closing regions throws exception.
if (this.dataFsOk) {
shutdownWAL(!abortRequested.get());
}
// Make sure the proxy is down.
if (this.rssStub != null) {
this.rssStub = null;
}
if (this.lockStub != null) {
this.lockStub = null;
}
if (this.rpcClient != null) {
this.rpcClient.close();
}
if (this.leaseManager != null) {
this.leaseManager.close();
}
if (this.pauseMonitor != null) {
this.pauseMonitor.stop();
}
if (!killed) {
stopServiceThreads();
}
if (this.rpcServices != null) {
this.rpcServices.stop();
}
try {
deleteMyEphemeralNode();
} catch (KeeperException.NoNodeException nn) {
// pass
} catch (KeeperException e) {
LOG.warn("Failed deleting my ephemeral node", e);
}
// We may have failed to delete the znode at the previous step, but
// we delete the file anyway: a second attempt to delete the znode is likely to fail again.
ZNodeClearer.deleteMyEphemeralNodeOnDisk();
if (this.zooKeeper != null) {
this.zooKeeper.close();
}
this.shutDown = true;
LOG.info("Exiting; stopping=" + this.serverName + "; zookeeper connection closed.");
}
private boolean containsMetaTableRegions() {
return onlineRegions.containsKey(RegionInfoBuilder.FIRST_META_REGIONINFO.getEncodedName());
}
private boolean areAllUserRegionsOffline() {
if (getNumberOfOnlineRegions() > 2) return false;
boolean allUserRegionsOffline = true;
for (Map.Entry<String, HRegion> e: this.onlineRegions.entrySet()) {
if (!e.getValue().getRegionInfo().isMetaRegion()) {
allUserRegionsOffline = false;
break;
}
}
return allUserRegionsOffline;
}
/**
* @return Current write count for all online regions.
*/
private long getWriteRequestCount() {
long writeCount = 0;
for (Map.Entry<String, HRegion> e: this.onlineRegions.entrySet()) {
writeCount += e.getValue().getWriteRequestsCount();
}
return writeCount;
}
@VisibleForTesting
protected void tryRegionServerReport(long reportStartTime, long reportEndTime)
throws IOException {
RegionServerStatusService.BlockingInterface rss = rssStub;
if (rss == null) {
// the current server could be stopping.
return;
}
ClusterStatusProtos.ServerLoad sl = buildServerLoad(reportStartTime, reportEndTime);
try {
RegionServerReportRequest.Builder request = RegionServerReportRequest.newBuilder();
request.setServer(ProtobufUtil.toServerName(this.serverName));
request.setLoad(sl);
rss.regionServerReport(null, request.build());
} catch (ServiceException se) {
IOException ioe = ProtobufUtil.getRemoteException(se);
if (ioe instanceof YouAreDeadException) {
// This will be caught and handled as a fatal error in run()
throw ioe;
}
if (rssStub == rss) {
rssStub = null;
}
// Couldn't connect to the master, get location from zk and reconnect
// Method blocks until new master is found or we are stopped
createRegionServerStatusStub(true);
}
}
/**
* Reports the given map of Regions and their size on the filesystem to the active Master.
*
* @param regionSizeStore The store containing region sizes
* @return false if FileSystemUtilizationChore should pause reporting to master. true otherwise
*/
public boolean reportRegionSizesForQuotas(RegionSizeStore regionSizeStore) {
RegionServerStatusService.BlockingInterface rss = rssStub;
if (rss == null) {
// the current server could be stopping.
LOG.trace("Skipping Region size report to HMaster as stub is null");
return true;
}
try {
buildReportAndSend(rss, regionSizeStore);
} catch (ServiceException se) {
IOException ioe = ProtobufUtil.getRemoteException(se);
if (ioe instanceof PleaseHoldException) {
LOG.trace("Failed to report region sizes to Master because it is initializing."
+ " This will be retried.", ioe);
// The Master is coming up. Will retry the report later. Avoid re-creating the stub.
return true;
}
if (rssStub == rss) {
rssStub = null;
}
createRegionServerStatusStub(true);
if (ioe instanceof DoNotRetryIOException) {
DoNotRetryIOException doNotRetryEx = (DoNotRetryIOException) ioe;
if (doNotRetryEx.getCause() != null) {
Throwable t = doNotRetryEx.getCause();
if (t instanceof UnsupportedOperationException) {
LOG.debug("master doesn't support ReportRegionSpaceUse, pause before retrying");
return false;
}
}
}
LOG.debug("Failed to report region sizes to Master. This will be retried.", ioe);
}
return true;
}
/**
* Builds the region size report and sends it to the master. Upon successful sending of the
* report, the region sizes that were sent are marked as sent.
*
* @param rss The stub to send to the Master
* @param regionSizeStore The store containing region sizes
*/
private void buildReportAndSend(RegionServerStatusService.BlockingInterface rss,
RegionSizeStore regionSizeStore) throws ServiceException {
RegionSpaceUseReportRequest request =
buildRegionSpaceUseReportRequest(Objects.requireNonNull(regionSizeStore));
rss.reportRegionSpaceUse(null, request);
// Record the number of size reports sent
if (metricsRegionServer != null) {
metricsRegionServer.incrementNumRegionSizeReportsSent(regionSizeStore.size());
}
}
/**
* Builds a {@link RegionSpaceUseReportRequest} protobuf message from the region size map.
*
* @param regionSizes The size in bytes of regions
* @return The corresponding protocol buffer message.
*/
RegionSpaceUseReportRequest buildRegionSpaceUseReportRequest(RegionSizeStore regionSizes) {
RegionSpaceUseReportRequest.Builder request = RegionSpaceUseReportRequest.newBuilder();
for (Entry<RegionInfo, RegionSize> entry : regionSizes) {
request.addSpaceUse(convertRegionSize(entry.getKey(), entry.getValue().getSize()));
}
return request.build();
}
/**
* Converts a pair of {@link RegionInfo} and {@code long} into a {@link RegionSpaceUse}
* protobuf message.
*
* @param regionInfo The RegionInfo
* @param sizeInBytes The size in bytes of the Region
* @return The protocol buffer
*/
RegionSpaceUse convertRegionSize(RegionInfo regionInfo, Long sizeInBytes) {
return RegionSpaceUse.newBuilder()
.setRegionInfo(ProtobufUtil.toRegionInfo(Objects.requireNonNull(regionInfo)))
.setRegionSize(Objects.requireNonNull(sizeInBytes))
.build();
}
private ClusterStatusProtos.ServerLoad buildServerLoad(long reportStartTime, long reportEndTime)
throws IOException {
// We're getting the MetricsRegionServerWrapper here because the wrapper computes requests
// per second, and other metrics As long as metrics are part of ServerLoad it's best to use
// the wrapper to compute those numbers in one place.
// In the long term most of these should be moved off of ServerLoad and the heart beat.
// Instead they should be stored in an HBase table so that external visibility into HBase is
// improved; Additionally the load balancer will be able to take advantage of a more complete
// history.
MetricsRegionServerWrapper regionServerWrapper = metricsRegionServer.getRegionServerWrapper();
Collection<HRegion> regions = getOnlineRegionsLocalContext();
long usedMemory = -1L;
long maxMemory = -1L;
final MemoryUsage usage = MemorySizeUtil.safeGetHeapMemoryUsage();
if (usage != null) {
usedMemory = usage.getUsed();
maxMemory = usage.getMax();
}
ClusterStatusProtos.ServerLoad.Builder serverLoad = ClusterStatusProtos.ServerLoad.newBuilder();
serverLoad.setNumberOfRequests((int) regionServerWrapper.getRequestsPerSecond());
serverLoad.setTotalNumberOfRequests(regionServerWrapper.getTotalRequestCount());
serverLoad.setUsedHeapMB((int)(usedMemory / 1024 / 1024));
serverLoad.setMaxHeapMB((int) (maxMemory / 1024 / 1024));
Set<String> coprocessors = getWAL(null).getCoprocessorHost().getCoprocessors();
Builder coprocessorBuilder = Coprocessor.newBuilder();
for (String coprocessor : coprocessors) {
serverLoad.addCoprocessors(coprocessorBuilder.setName(coprocessor).build());
}
RegionLoad.Builder regionLoadBldr = RegionLoad.newBuilder();
RegionSpecifier.Builder regionSpecifier = RegionSpecifier.newBuilder();
for (HRegion region : regions) {
if (region.getCoprocessorHost() != null) {
Set<String> regionCoprocessors = region.getCoprocessorHost().getCoprocessors();
for (String regionCoprocessor : regionCoprocessors) {
serverLoad.addCoprocessors(coprocessorBuilder.setName(regionCoprocessor).build());
}
}
serverLoad.addRegionLoads(createRegionLoad(region, regionLoadBldr, regionSpecifier));
for (String coprocessor : getWAL(region.getRegionInfo()).getCoprocessorHost()
.getCoprocessors()) {
serverLoad.addCoprocessors(coprocessorBuilder.setName(coprocessor).build());
}
}
serverLoad.setReportStartTime(reportStartTime);
serverLoad.setReportEndTime(reportEndTime);
if (this.infoServer != null) {
serverLoad.setInfoServerPort(this.infoServer.getPort());
} else {
serverLoad.setInfoServerPort(-1);
}
MetricsUserAggregateSource userSource =
metricsRegionServer.getMetricsUserAggregate().getSource();
if (userSource != null) {
Map<String, MetricsUserSource> userMetricMap = userSource.getUserSources();
for (Entry<String, MetricsUserSource> entry : userMetricMap.entrySet()) {
serverLoad.addUserLoads(createUserLoad(entry.getKey(), entry.getValue()));
}
}
// for the replicationLoad purpose. Only need to get from one executorService
// either source or sink will get the same info
ReplicationSourceService rsources = getReplicationSourceService();
if (rsources != null) {
// always refresh first to get the latest value
ReplicationLoad rLoad = rsources.refreshAndGetReplicationLoad();
if (rLoad != null) {
serverLoad.setReplLoadSink(rLoad.getReplicationLoadSink());
for (ClusterStatusProtos.ReplicationLoadSource rLS :
rLoad.getReplicationLoadSourceEntries()) {
serverLoad.addReplLoadSource(rLS);
}
}
}
return serverLoad.build();
}
private String getOnlineRegionsAsPrintableString() {
StringBuilder sb = new StringBuilder();
for (Region r: this.onlineRegions.values()) {
if (sb.length() > 0) sb.append(", ");
sb.append(r.getRegionInfo().getEncodedName());
}
return sb.toString();
}
/**
* Wait on regions close.
*/
private void waitOnAllRegionsToClose(final boolean abort) {
// Wait till all regions are closed before going out.
int lastCount = -1;
long previousLogTime = 0;
Set<String> closedRegions = new HashSet<>();
boolean interrupted = false;
try {
while (!onlineRegions.isEmpty()) {
int count = getNumberOfOnlineRegions();
// Only print a message if the count of regions has changed.
if (count != lastCount) {
// Log every second at most
if (System.currentTimeMillis() > (previousLogTime + 1000)) {
previousLogTime = System.currentTimeMillis();
lastCount = count;
LOG.info("Waiting on " + count + " regions to close");
// Only print out regions still closing if a small number else will
// swamp the log.
if (count < 10 && LOG.isDebugEnabled()) {
LOG.debug("Online Regions=" + this.onlineRegions);
}
}
}
// Ensure all user regions have been sent a close. Use this to
// protect against the case where an open comes in after we start the
// iterator of onlineRegions to close all user regions.
for (Map.Entry<String, HRegion> e : this.onlineRegions.entrySet()) {
RegionInfo hri = e.getValue().getRegionInfo();
if (!this.regionsInTransitionInRS.containsKey(hri.getEncodedNameAsBytes()) &&
!closedRegions.contains(hri.getEncodedName())) {
closedRegions.add(hri.getEncodedName());
// Don't update zk with this close transition; pass false.
closeRegionIgnoreErrors(hri, abort);
}
}
// No regions in RIT, we could stop waiting now.
if (this.regionsInTransitionInRS.isEmpty()) {
if (!onlineRegions.isEmpty()) {
LOG.info("We were exiting though online regions are not empty," +
" because some regions failed closing");
}
break;
} else {
LOG.debug("Waiting on {}", this.regionsInTransitionInRS.keySet().stream().
map(e -> Bytes.toString(e)).collect(Collectors.joining(", ")));
}
if (sleepInterrupted(200)) {
interrupted = true;
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
}
private static boolean sleepInterrupted(long millis) {
boolean interrupted = false;
try {
Thread.sleep(millis);
} catch (InterruptedException e) {
LOG.warn("Interrupted while sleeping");
interrupted = true;
}
return interrupted;
}
private void shutdownWAL(final boolean close) {
if (this.walFactory != null) {
try {
if (close) {
walFactory.close();
} else {
walFactory.shutdown();
}
} catch (Throwable e) {
e = e instanceof RemoteException ? ((RemoteException) e).unwrapRemoteException() : e;
LOG.error("Shutdown / close of WAL failed: " + e);
LOG.debug("Shutdown / close exception details:", e);
}
}
}
/**
* get NamedQueue Provider to add different logs to ringbuffer
*
* @return NamedQueueRecorder
*/
public NamedQueueRecorder getNamedQueueRecorder() {
return this.namedQueueRecorder;
}
/*
* Run init. Sets up wal and starts up all server threads.
*
* @param c Extra configuration.
*/
protected void handleReportForDutyResponse(final RegionServerStartupResponse c)
throws IOException {
try {
boolean updateRootDir = false;
for (NameStringPair e : c.getMapEntriesList()) {
String key = e.getName();
// The hostname the master sees us as.
if (key.equals(HConstants.KEY_FOR_HOSTNAME_SEEN_BY_MASTER)) {
String hostnameFromMasterPOV = e.getValue();
this.serverName = ServerName.valueOf(hostnameFromMasterPOV, rpcServices.isa.getPort(),
this.startcode);
if (!StringUtils.isBlank(useThisHostnameInstead) &&
!hostnameFromMasterPOV.equals(useThisHostnameInstead)) {
String msg = "Master passed us a different hostname to use; was=" +
this.useThisHostnameInstead + ", but now=" + hostnameFromMasterPOV;
LOG.error(msg);
throw new IOException(msg);
}
if (StringUtils.isBlank(useThisHostnameInstead) &&
!hostnameFromMasterPOV.equals(rpcServices.isa.getHostName())) {
String msg = "Master passed us a different hostname to use; was=" +
rpcServices.isa.getHostName() + ", but now=" + hostnameFromMasterPOV;
LOG.error(msg);
}
continue;
}
String value = e.getValue();
if (key.equals(HConstants.HBASE_DIR)) {
if (value != null && !value.equals(conf.get(HConstants.HBASE_DIR))) {
updateRootDir = true;
}
}
if (LOG.isDebugEnabled()) {
LOG.debug("Config from master: " + key + "=" + value);
}
this.conf.set(key, value);
}
// Set our ephemeral znode up in zookeeper now we have a name.
createMyEphemeralNode();
if (updateRootDir) {
// initialize file system by the config fs.defaultFS and hbase.rootdir from master
initializeFileSystem();
}
// hack! Maps DFSClient => RegionServer for logs. HDFS made this
// config param for task trackers, but we can piggyback off of it.
if (this.conf.get("mapreduce.task.attempt.id") == null) {
this.conf.set("mapreduce.task.attempt.id", "hb_rs_" + this.serverName.toString());
}
// Save it in a file, this will allow to see if we crash
ZNodeClearer.writeMyEphemeralNodeOnDisk(getMyEphemeralNodePath());
// This call sets up an initialized replication and WAL. Later we start it up.
setupWALAndReplication();
// Init in here rather than in constructor after thread name has been set
final MetricsTable metricsTable =
new MetricsTable(new MetricsTableWrapperAggregateImpl(this));
this.metricsRegionServerImpl = new MetricsRegionServerWrapperImpl(this);
this.metricsRegionServer = new MetricsRegionServer(
metricsRegionServerImpl, conf, metricsTable);
// Now that we have a metrics source, start the pause monitor
this.pauseMonitor = new JvmPauseMonitor(conf, getMetrics().getMetricsSource());
pauseMonitor.start();
// There is a rare case where we do NOT want services to start. Check config.
if (getConfiguration().getBoolean("hbase.regionserver.workers", true)) {
startServices();
}
// In here we start up the replication Service. Above we initialized it. TODO. Reconcile.
// or make sense of it.
startReplicationService();
// Set up ZK
LOG.info("Serving as " + this.serverName + ", RpcServer on " + rpcServices.isa +
", sessionid=0x" +
Long.toHexString(this.zooKeeper.getRecoverableZooKeeper().getSessionId()));
// Wake up anyone waiting for this server to online
synchronized (online) {
online.set(true);
online.notifyAll();
}
} catch (Throwable e) {
stop("Failed initialization");
throw convertThrowableToIOE(cleanup(e, "Failed init"),
"Region server startup failed");
} finally {
sleeper.skipSleepCycle();
}
}
protected void initializeMemStoreChunkCreator() {
if (MemStoreLAB.isEnabled(conf)) {
// MSLAB is enabled. So initialize MemStoreChunkPool
// By this time, the MemstoreFlusher is already initialized. We can get the global limits from
// it.
Pair<Long, MemoryType> pair = MemorySizeUtil.getGlobalMemStoreSize(conf);
long globalMemStoreSize = pair.getFirst();
boolean offheap = this.regionServerAccounting.isOffheap();
// When off heap memstore in use, take full area for chunk pool.
float poolSizePercentage = offheap ? 1.0F :
conf.getFloat(MemStoreLAB.CHUNK_POOL_MAXSIZE_KEY, MemStoreLAB.POOL_MAX_SIZE_DEFAULT);
float initialCountPercentage = conf.getFloat(MemStoreLAB.CHUNK_POOL_INITIALSIZE_KEY,
MemStoreLAB.POOL_INITIAL_SIZE_DEFAULT);
int chunkSize = conf.getInt(MemStoreLAB.CHUNK_SIZE_KEY, MemStoreLAB.CHUNK_SIZE_DEFAULT);
float indexChunkSizePercent = conf.getFloat(MemStoreLAB.INDEX_CHUNK_SIZE_PERCENTAGE_KEY,
MemStoreLAB.INDEX_CHUNK_SIZE_PERCENTAGE_DEFAULT);
// init the chunkCreator
ChunkCreator.initialize(chunkSize, offheap, globalMemStoreSize, poolSizePercentage,
initialCountPercentage, this.hMemManager, indexChunkSizePercent);
}
}
private void startHeapMemoryManager() {
if (this.blockCache != null) {
this.hMemManager =
new HeapMemoryManager(this.blockCache, this.cacheFlusher, this, regionServerAccounting);
this.hMemManager.start(getChoreService());
}
}
private void createMyEphemeralNode() throws KeeperException {
RegionServerInfo.Builder rsInfo = RegionServerInfo.newBuilder();
rsInfo.setInfoPort(infoServer != null ? infoServer.getPort() : -1);
rsInfo.setVersionInfo(ProtobufUtil.getVersionInfo());
byte[] data = ProtobufUtil.prependPBMagic(rsInfo.build().toByteArray());
ZKUtil.createEphemeralNodeAndWatch(this.zooKeeper, getMyEphemeralNodePath(), data);
}
private void deleteMyEphemeralNode() throws KeeperException {
ZKUtil.deleteNode(this.zooKeeper, getMyEphemeralNodePath());
}
@Override
public RegionServerAccounting getRegionServerAccounting() {
return regionServerAccounting;
}
/**
* @param r Region to get RegionLoad for.
* @param regionLoadBldr the RegionLoad.Builder, can be null
* @param regionSpecifier the RegionSpecifier.Builder, can be null
* @return RegionLoad instance.
*/
RegionLoad createRegionLoad(final HRegion r, RegionLoad.Builder regionLoadBldr,
RegionSpecifier.Builder regionSpecifier) throws IOException {
byte[] name = r.getRegionInfo().getRegionName();
int stores = 0;
int storefiles = 0;
int storeRefCount = 0;
int maxCompactedStoreFileRefCount = 0;
int storeUncompressedSizeMB = 0;
int storefileSizeMB = 0;
int memstoreSizeMB = (int) (r.getMemStoreDataSize() / 1024 / 1024);
long storefileIndexSizeKB = 0;
int rootLevelIndexSizeKB = 0;
int totalStaticIndexSizeKB = 0;
int totalStaticBloomSizeKB = 0;
long totalCompactingKVs = 0;
long currentCompactedKVs = 0;
List<HStore> storeList = r.getStores();
stores += storeList.size();
for (HStore store : storeList) {
storefiles += store.getStorefilesCount();
int currentStoreRefCount = store.getStoreRefCount();
storeRefCount += currentStoreRefCount;
int currentMaxCompactedStoreFileRefCount = store.getMaxCompactedStoreFileRefCount();
maxCompactedStoreFileRefCount = Math.max(maxCompactedStoreFileRefCount,
currentMaxCompactedStoreFileRefCount);
storeUncompressedSizeMB += (int) (store.getStoreSizeUncompressed() / 1024 / 1024);
storefileSizeMB += (int) (store.getStorefilesSize() / 1024 / 1024);
//TODO: storefileIndexSizeKB is same with rootLevelIndexSizeKB?
storefileIndexSizeKB += store.getStorefilesRootLevelIndexSize() / 1024;
CompactionProgress progress = store.getCompactionProgress();
if (progress != null) {
totalCompactingKVs += progress.getTotalCompactingKVs();
currentCompactedKVs += progress.currentCompactedKVs;
}
rootLevelIndexSizeKB += (int) (store.getStorefilesRootLevelIndexSize() / 1024);
totalStaticIndexSizeKB += (int) (store.getTotalStaticIndexSize() / 1024);
totalStaticBloomSizeKB += (int) (store.getTotalStaticBloomSize() / 1024);
}
HDFSBlocksDistribution hdfsBd = r.getHDFSBlocksDistribution();
float dataLocality = hdfsBd.getBlockLocalityIndex(serverName.getHostname());
float dataLocalityForSsd = hdfsBd.getBlockLocalityIndexForSsd(serverName.getHostname());
long blocksTotalWeight = hdfsBd.getUniqueBlocksTotalWeight();
long blocksLocalWeight = hdfsBd.getBlocksLocalWeight(serverName.getHostname());
long blocksLocalWithSsdWeight = hdfsBd.getBlocksLocalWithSsdWeight(serverName.getHostname());
if (regionLoadBldr == null) {
regionLoadBldr = RegionLoad.newBuilder();
}
if (regionSpecifier == null) {
regionSpecifier = RegionSpecifier.newBuilder();
}
regionSpecifier.setType(RegionSpecifierType.REGION_NAME);
regionSpecifier.setValue(UnsafeByteOperations.unsafeWrap(name));
regionLoadBldr.setRegionSpecifier(regionSpecifier.build())
.setStores(stores)
.setStorefiles(storefiles)
.setStoreRefCount(storeRefCount)
.setMaxCompactedStoreFileRefCount(maxCompactedStoreFileRefCount)
.setStoreUncompressedSizeMB(storeUncompressedSizeMB)
.setStorefileSizeMB(storefileSizeMB)
.setMemStoreSizeMB(memstoreSizeMB)
.setStorefileIndexSizeKB(storefileIndexSizeKB)
.setRootIndexSizeKB(rootLevelIndexSizeKB)
.setTotalStaticIndexSizeKB(totalStaticIndexSizeKB)
.setTotalStaticBloomSizeKB(totalStaticBloomSizeKB)
.setReadRequestsCount(r.getReadRequestsCount())
.setCpRequestsCount(r.getCpRequestsCount())
.setFilteredReadRequestsCount(r.getFilteredReadRequestsCount())
.setWriteRequestsCount(r.getWriteRequestsCount())
.setTotalCompactingKVs(totalCompactingKVs)
.setCurrentCompactedKVs(currentCompactedKVs)
.setDataLocality(dataLocality)
.setDataLocalityForSsd(dataLocalityForSsd)
.setBlocksLocalWeight(blocksLocalWeight)
.setBlocksLocalWithSsdWeight(blocksLocalWithSsdWeight)
.setBlocksTotalWeight(blocksTotalWeight)
.setLastMajorCompactionTs(r.getOldestHfileTs(true));
r.setCompleteSequenceId(regionLoadBldr);
return regionLoadBldr.build();
}
private UserLoad createUserLoad(String user, MetricsUserSource userSource) {
UserLoad.Builder userLoadBldr = UserLoad.newBuilder();
userLoadBldr.setUserName(user);
userSource.getClientMetrics().values().stream().map(
clientMetrics -> ClusterStatusProtos.ClientMetrics.newBuilder()
.setHostName(clientMetrics.getHostName())
.setWriteRequestsCount(clientMetrics.getWriteRequestsCount())
.setFilteredRequestsCount(clientMetrics.getFilteredReadRequests())
.setReadRequestsCount(clientMetrics.getReadRequestsCount()).build())
.forEach(userLoadBldr::addClientMetrics);
return userLoadBldr.build();
}
public RegionLoad createRegionLoad(final String encodedRegionName) throws IOException {
HRegion r = onlineRegions.get(encodedRegionName);
return r != null ? createRegionLoad(r, null, null) : null;
}
/**
* Inner class that runs on a long period checking if regions need compaction.
*/
private static class CompactionChecker extends ScheduledChore {
private final HRegionServer instance;
private final int majorCompactPriority;
private final static int DEFAULT_PRIORITY = Integer.MAX_VALUE;
//Iteration is 1-based rather than 0-based so we don't check for compaction
// immediately upon region server startup
private long iteration = 1;
CompactionChecker(final HRegionServer h, final int sleepTime, final Stoppable stopper) {
super("CompactionChecker", stopper, sleepTime);
this.instance = h;
LOG.info(this.getName() + " runs every " + Duration.ofMillis(sleepTime));
/* MajorCompactPriority is configurable.
* If not set, the compaction will use default priority.
*/
this.majorCompactPriority = this.instance.conf.
getInt("hbase.regionserver.compactionChecker.majorCompactPriority",
DEFAULT_PRIORITY);
}
@Override
protected void chore() {
for (Region r : this.instance.onlineRegions.values()) {
// Skip compaction if region is read only
if (r == null || r.isReadOnly()) {
continue;
}
HRegion hr = (HRegion) r;
for (HStore s : hr.stores.values()) {
try {
long multiplier = s.getCompactionCheckMultiplier();
assert multiplier > 0;
if (iteration % multiplier != 0) {
continue;
}
if (s.needsCompaction()) {
// Queue a compaction. Will recognize if major is needed.
this.instance.compactSplitThread.requestSystemCompaction(hr, s,
getName() + " requests compaction");
} else if (s.shouldPerformMajorCompaction()) {
s.triggerMajorCompaction();
if (majorCompactPriority == DEFAULT_PRIORITY ||
majorCompactPriority > hr.getCompactPriority()) {
this.instance.compactSplitThread.requestCompaction(hr, s,
getName() + " requests major compaction; use default priority",
Store.NO_PRIORITY,
CompactionLifeCycleTracker.DUMMY, null);
} else {
this.instance.compactSplitThread.requestCompaction(hr, s,
getName() + " requests major compaction; use configured priority",
this.majorCompactPriority, CompactionLifeCycleTracker.DUMMY, null);
}
}
} catch (IOException e) {
LOG.warn("Failed major compaction check on " + r, e);
}
}
}
iteration = (iteration == Long.MAX_VALUE) ? 0 : (iteration + 1);
}
}
private static class PeriodicMemStoreFlusher extends ScheduledChore {
private final HRegionServer server;
private final static int RANGE_OF_DELAY = 5 * 60; // 5 min in seconds
private final static int MIN_DELAY_TIME = 0; // millisec
private final long rangeOfDelayMs;
PeriodicMemStoreFlusher(int cacheFlushInterval, final HRegionServer server) {
super("MemstoreFlusherChore", server, cacheFlushInterval);
this.server = server;
final long configuredRangeOfDelay = server.getConfiguration().getInt(
"hbase.regionserver.periodicmemstoreflusher.rangeofdelayseconds", RANGE_OF_DELAY);
this.rangeOfDelayMs = TimeUnit.SECONDS.toMillis(configuredRangeOfDelay);
}
@Override
protected void chore() {
final StringBuilder whyFlush = new StringBuilder();
for (HRegion r : this.server.onlineRegions.values()) {
if (r == null) continue;
if (r.shouldFlush(whyFlush)) {
FlushRequester requester = server.getFlushRequester();
if (requester != null) {
long randomDelay = RandomUtils.nextLong(0, rangeOfDelayMs) + MIN_DELAY_TIME;
//Throttle the flushes by putting a delay. If we don't throttle, and there
//is a balanced write-load on the regions in a table, we might end up
//overwhelming the filesystem with too many flushes at once.
if (requester.requestDelayedFlush(r, randomDelay)) {
LOG.info("{} requesting flush of {} because {} after random delay {} ms",
getName(), r.getRegionInfo().getRegionNameAsString(), whyFlush.toString(),
randomDelay);
}
}
}
}
}
}
/**
* Report the status of the server. A server is online once all the startup is
* completed (setting up filesystem, starting executorService threads, etc.). This
* method is designed mostly to be useful in tests.
*
* @return true if online, false if not.
*/
public boolean isOnline() {
return online.get();
}
/**
* Setup WAL log and replication if enabled. Replication setup is done in here because it wants to
* be hooked up to WAL.
*/
private void setupWALAndReplication() throws IOException {
boolean isMasterNoTableOrSystemTableOnly = this instanceof HMaster &&
!LoadBalancer.isMasterCanHostUserRegions(conf);
WALFactory factory =
new WALFactory(conf, serverName.toString(), !isMasterNoTableOrSystemTableOnly);
if (!isMasterNoTableOrSystemTableOnly) {
// TODO Replication make assumptions here based on the default filesystem impl
Path oldLogDir = new Path(walRootDir, HConstants.HREGION_OLDLOGDIR_NAME);
String logName = AbstractFSWALProvider.getWALDirectoryName(this.serverName.toString());
Path logDir = new Path(walRootDir, logName);
LOG.debug("logDir={}", logDir);
if (this.walFs.exists(logDir)) {
throw new RegionServerRunningException(
"Region server has already created directory at " + this.serverName.toString());
}
// Always create wal directory as now we need this when master restarts to find out the live
// region servers.
if (!this.walFs.mkdirs(logDir)) {
throw new IOException("Can not create wal directory " + logDir);
}
// Instantiate replication if replication enabled. Pass it the log directories.
createNewReplicationInstance(conf, this, this.walFs, logDir, oldLogDir, factory);
}
this.walFactory = factory;
}
/**
* Start up replication source and sink handlers.
*/
private void startReplicationService() throws IOException {
if (this.replicationSourceHandler == this.replicationSinkHandler &&
this.replicationSourceHandler != null) {
this.replicationSourceHandler.startReplicationService();
} else {
if (this.replicationSourceHandler != null) {
this.replicationSourceHandler.startReplicationService();
}
if (this.replicationSinkHandler != null) {
this.replicationSinkHandler.startReplicationService();
}
}
}
/**
* @return Master address tracker instance.
*/
public MasterAddressTracker getMasterAddressTracker() {
return this.masterAddressTracker;
}
/**
* Start maintenance Threads, Server, Worker and lease checker threads.
* Start all threads we need to run. This is called after we've successfully
* registered with the Master.
* Install an UncaughtExceptionHandler that calls abort of RegionServer if we
* get an unhandled exception. We cannot set the handler on all threads.
* Server's internal Listener thread is off limits. For Server, if an OOME, it
* waits a while then retries. Meantime, a flush or a compaction that tries to
* run should trigger same critical condition and the shutdown will run. On
* its way out, this server will shut down Server. Leases are sort of
* inbetween. It has an internal thread that while it inherits from Chore, it
* keeps its own internal stop mechanism so needs to be stopped by this
* hosting server. Worker logs the exception and exits.
*/
private void startServices() throws IOException {
if (!isStopped() && !isAborted()) {
initializeThreads();
}
this.secureBulkLoadManager = new SecureBulkLoadManager(this.conf, asyncClusterConnection);
this.secureBulkLoadManager.start();
// Health checker thread.
if (isHealthCheckerConfigured()) {
int sleepTime = this.conf.getInt(HConstants.HEALTH_CHORE_WAKE_FREQ,
HConstants.DEFAULT_THREAD_WAKE_FREQUENCY);
healthCheckChore = new HealthCheckChore(sleepTime, this, getConfiguration());
}
// Executor status collect thread.
if (this.conf.getBoolean(HConstants.EXECUTOR_STATUS_COLLECT_ENABLED,
HConstants.DEFAULT_EXECUTOR_STATUS_COLLECT_ENABLED)) {
int sleepTime = this.conf.getInt(ExecutorStatusChore.WAKE_FREQ,
ExecutorStatusChore.DEFAULT_WAKE_FREQ);
executorStatusChore = new ExecutorStatusChore(sleepTime, this, this.getExecutorService(),
this.metricsRegionServer.getMetricsSource());
}
this.walRoller = new LogRoller(this);
this.flushThroughputController = FlushThroughputControllerFactory.create(this, conf);
this.procedureResultReporter = new RemoteProcedureResultReporter(this);
// Create the CompactedFileDischarger chore executorService. This chore helps to
// remove the compacted files that will no longer be used in reads.
// Default is 2 mins. The default value for TTLCleaner is 5 mins so we set this to
// 2 mins so that compacted files can be archived before the TTLCleaner runs
int cleanerInterval =
conf.getInt("hbase.hfile.compaction.discharger.interval", 2 * 60 * 1000);
this.compactedFileDischarger =
new CompactedHFilesDischarger(cleanerInterval, this, this);
choreService.scheduleChore(compactedFileDischarger);
// Start executor services
this.executorService.startExecutorService(ExecutorType.RS_OPEN_REGION,
conf.getInt("hbase.regionserver.executor.openregion.threads", 3));
this.executorService.startExecutorService(ExecutorType.RS_OPEN_META,
conf.getInt("hbase.regionserver.executor.openmeta.threads", 1));
this.executorService.startExecutorService(ExecutorType.RS_OPEN_PRIORITY_REGION,
conf.getInt("hbase.regionserver.executor.openpriorityregion.threads", 3));
this.executorService.startExecutorService(ExecutorType.RS_CLOSE_REGION,
conf.getInt("hbase.regionserver.executor.closeregion.threads", 3));
this.executorService.startExecutorService(ExecutorType.RS_CLOSE_META,
conf.getInt("hbase.regionserver.executor.closemeta.threads", 1));
if (conf.getBoolean(StoreScanner.STORESCANNER_PARALLEL_SEEK_ENABLE, false)) {
this.executorService.startExecutorService(ExecutorType.RS_PARALLEL_SEEK,
conf.getInt("hbase.storescanner.parallel.seek.threads", 10));
}
this.executorService.startExecutorService(ExecutorType.RS_LOG_REPLAY_OPS, conf.getInt(
HBASE_SPLIT_WAL_MAX_SPLITTER, DEFAULT_HBASE_SPLIT_WAL_MAX_SPLITTER));
// Start the threads for compacted files discharger
this.executorService.startExecutorService(ExecutorType.RS_COMPACTED_FILES_DISCHARGER,
conf.getInt(CompactionConfiguration.HBASE_HFILE_COMPACTION_DISCHARGER_THREAD_COUNT, 10));
if (ServerRegionReplicaUtil.isRegionReplicaWaitForPrimaryFlushEnabled(conf)) {
this.executorService.startExecutorService(ExecutorType.RS_REGION_REPLICA_FLUSH_OPS,
conf.getInt("hbase.regionserver.region.replica.flusher.threads",
conf.getInt("hbase.regionserver.executor.openregion.threads", 3)));
}
this.executorService.startExecutorService(ExecutorType.RS_REFRESH_PEER,
conf.getInt("hbase.regionserver.executor.refresh.peer.threads", 2));
this.executorService.startExecutorService(ExecutorType.RS_REPLAY_SYNC_REPLICATION_WAL,
conf.getInt("hbase.regionserver.executor.replay.sync.replication.wal.threads", 1));
this.executorService.startExecutorService(ExecutorType.RS_SWITCH_RPC_THROTTLE,
conf.getInt("hbase.regionserver.executor.switch.rpc.throttle.threads", 1));
Threads.setDaemonThreadRunning(this.walRoller, getName() + ".logRoller",
uncaughtExceptionHandler);
if (this.cacheFlusher != null) {
this.cacheFlusher.start(uncaughtExceptionHandler);
}
Threads.setDaemonThreadRunning(this.procedureResultReporter,
getName() + ".procedureResultReporter", uncaughtExceptionHandler);
if (this.compactionChecker != null) {
choreService.scheduleChore(compactionChecker);
}
if (this.periodicFlusher != null) {
choreService.scheduleChore(periodicFlusher);
}
if (this.healthCheckChore != null) {
choreService.scheduleChore(healthCheckChore);
}
if (this.executorStatusChore != null) {
choreService.scheduleChore(executorStatusChore);
}
if (this.nonceManagerChore != null) {
choreService.scheduleChore(nonceManagerChore);
}
if (this.storefileRefresher != null) {
choreService.scheduleChore(storefileRefresher);
}
if (this.fsUtilizationChore != null) {
choreService.scheduleChore(fsUtilizationChore);
}
if (this.slowLogTableOpsChore != null) {
choreService.scheduleChore(slowLogTableOpsChore);
}
// Leases is not a Thread. Internally it runs a daemon thread. If it gets
// an unhandled exception, it will just exit.
Threads.setDaemonThreadRunning(this.leaseManager, getName() + ".leaseChecker",
uncaughtExceptionHandler);
// Create the log splitting worker and start it
// set a smaller retries to fast fail otherwise splitlogworker could be blocked for
// quite a while inside Connection layer. The worker won't be available for other
// tasks even after current task is preempted after a split task times out.
Configuration sinkConf = HBaseConfiguration.create(conf);
sinkConf.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER,
conf.getInt("hbase.log.replay.retries.number", 8)); // 8 retries take about 23 seconds
sinkConf.setInt(HConstants.HBASE_RPC_TIMEOUT_KEY,
conf.getInt("hbase.log.replay.rpc.timeout", 30000)); // default 30 seconds
sinkConf.setInt(HConstants.HBASE_CLIENT_SERVERSIDE_RETRIES_MULTIPLIER, 1);
if (this.csm != null && conf.getBoolean(HBASE_SPLIT_WAL_COORDINATED_BY_ZK,
DEFAULT_HBASE_SPLIT_COORDINATED_BY_ZK)) {
// SplitLogWorker needs csm. If none, don't start this.
this.splitLogWorker = new SplitLogWorker(sinkConf, this, this, walFactory);
splitLogWorker.start();
LOG.debug("SplitLogWorker started");
}
// Memstore services.
startHeapMemoryManager();
// Call it after starting HeapMemoryManager.
initializeMemStoreChunkCreator();
}
private void initializeThreads() {
// Cache flushing thread.
this.cacheFlusher = new MemStoreFlusher(conf, this);
// Compaction thread
this.compactSplitThread = new CompactSplit(this);
// Background thread to check for compactions; needed if region has not gotten updates
// in a while. It will take care of not checking too frequently on store-by-store basis.
this.compactionChecker = new CompactionChecker(this, this.compactionCheckFrequency, this);
this.periodicFlusher = new PeriodicMemStoreFlusher(this.flushCheckFrequency, this);
this.leaseManager = new LeaseManager(this.threadWakeFrequency);
final boolean isSlowLogTableEnabled = conf.getBoolean(HConstants.SLOW_LOG_SYS_TABLE_ENABLED_KEY,
HConstants.DEFAULT_SLOW_LOG_SYS_TABLE_ENABLED_KEY);
if (isSlowLogTableEnabled) {
// default chore duration: 10 min
final int duration = conf.getInt("hbase.slowlog.systable.chore.duration", 10 * 60 * 1000);
slowLogTableOpsChore = new SlowLogTableOpsChore(this, duration, this.namedQueueRecorder);
}
if (this.nonceManager != null) {
// Create the scheduled chore that cleans up nonces.
nonceManagerChore = this.nonceManager.createCleanupScheduledChore(this);
}
// Setup the Quota Manager
rsQuotaManager = new RegionServerRpcQuotaManager(this);
rsSpaceQuotaManager = new RegionServerSpaceQuotaManager(this);
if (QuotaUtil.isQuotaEnabled(conf)) {
this.fsUtilizationChore = new FileSystemUtilizationChore(this);
}
boolean onlyMetaRefresh = false;
int storefileRefreshPeriod = conf.getInt(
StorefileRefresherChore.REGIONSERVER_STOREFILE_REFRESH_PERIOD,
StorefileRefresherChore.DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD);
if (storefileRefreshPeriod == 0) {
storefileRefreshPeriod = conf.getInt(
StorefileRefresherChore.REGIONSERVER_META_STOREFILE_REFRESH_PERIOD,
StorefileRefresherChore.DEFAULT_REGIONSERVER_STOREFILE_REFRESH_PERIOD);
onlyMetaRefresh = true;
}
if (storefileRefreshPeriod > 0) {
this.storefileRefresher = new StorefileRefresherChore(storefileRefreshPeriod,
onlyMetaRefresh, this, this);
}
registerConfigurationObservers();
}
private void registerConfigurationObservers() {
// Registering the compactSplitThread object with the ConfigurationManager.
configurationManager.registerObserver(this.compactSplitThread);
configurationManager.registerObserver(this.rpcServices);
configurationManager.registerObserver(this);
}
/**
* Puts up the webui.
*/
private void putUpWebUI() throws IOException {
int port = this.conf.getInt(HConstants.REGIONSERVER_INFO_PORT,
HConstants.DEFAULT_REGIONSERVER_INFOPORT);
String addr = this.conf.get("hbase.regionserver.info.bindAddress", "0.0.0.0");
if(this instanceof HMaster) {
port = conf.getInt(HConstants.MASTER_INFO_PORT,
HConstants.DEFAULT_MASTER_INFOPORT);
addr = this.conf.get("hbase.master.info.bindAddress", "0.0.0.0");
}
// -1 is for disabling info server
if (port < 0) {
return;
}
if (!Addressing.isLocalAddress(InetAddress.getByName(addr))) {
String msg =
"Failed to start http info server. Address " + addr
+ " does not belong to this host. Correct configuration parameter: "
+ "hbase.regionserver.info.bindAddress";
LOG.error(msg);
throw new IOException(msg);
}
// check if auto port bind enabled
boolean auto = this.conf.getBoolean(HConstants.REGIONSERVER_INFO_PORT_AUTO, false);
while (true) {
try {
this.infoServer = new InfoServer(getProcessName(), addr, port, false, this.conf);
infoServer.addPrivilegedServlet("dump", "/dump", getDumpServlet());
configureInfoServer();
this.infoServer.start();
break;
} catch (BindException e) {
if (!auto) {
// auto bind disabled throw BindException
LOG.error("Failed binding http info server to port: " + port);
throw e;
}
// auto bind enabled, try to use another port
LOG.info("Failed binding http info server to port: " + port);
port++;
}
}
port = this.infoServer.getPort();
conf.setInt(HConstants.REGIONSERVER_INFO_PORT, port);
int masterInfoPort = conf.getInt(HConstants.MASTER_INFO_PORT,
HConstants.DEFAULT_MASTER_INFOPORT);
conf.setInt("hbase.master.info.port.orig", masterInfoPort);
conf.setInt(HConstants.MASTER_INFO_PORT, port);
}
/*
* Verify that server is healthy
*/
private boolean isHealthy() {
if (!dataFsOk) {
// File system problem
return false;
}
// Verify that all threads are alive
boolean healthy = (this.leaseManager == null || this.leaseManager.isAlive())
&& (this.cacheFlusher == null || this.cacheFlusher.isAlive())
&& (this.walRoller == null || this.walRoller.isAlive())
&& (this.compactionChecker == null || this.compactionChecker.isScheduled())
&& (this.periodicFlusher == null || this.periodicFlusher.isScheduled());
if (!healthy) {
stop("One or more threads are no longer alive -- stop");
}
return healthy;
}
@Override
public List<WAL> getWALs() {
return walFactory.getWALs();
}
@Override
public WAL getWAL(RegionInfo regionInfo) throws IOException {
WAL wal = walFactory.getWAL(regionInfo);
if (this.walRoller != null) {
this.walRoller.addWAL(wal);
}
return wal;
}
public LogRoller getWalRoller() {
return walRoller;
}
WALFactory getWalFactory() {
return walFactory;
}
@Override
public Connection getConnection() {
return getAsyncConnection().toConnection();
}
@Override
public void stop(final String msg) {
stop(msg, false, RpcServer.getRequestUser().orElse(null));
}
/**
* Stops the regionserver.
* @param msg Status message
* @param force True if this is a regionserver abort
* @param user The user executing the stop request, or null if no user is associated
*/
public void stop(final String msg, final boolean force, final User user) {
if (!this.stopped) {
LOG.info("***** STOPPING region server '" + this + "' *****");
if (this.rsHost != null) {
// when forced via abort don't allow CPs to override
try {
this.rsHost.preStop(msg, user);
} catch (IOException ioe) {
if (!force) {
LOG.warn("The region server did not stop", ioe);
return;
}
LOG.warn("Skipping coprocessor exception on preStop() due to forced shutdown", ioe);
}
}
this.stopped = true;
LOG.info("STOPPED: " + msg);
// Wakes run() if it is sleeping
sleeper.skipSleepCycle();
}
}
public void waitForServerOnline(){
while (!isStopped() && !isOnline()) {
synchronized (online) {
try {
online.wait(msgInterval);
} catch (InterruptedException ie) {
Thread.currentThread().interrupt();
break;
}
}
}
}
@Override
public void postOpenDeployTasks(final PostOpenDeployContext context) throws IOException {
HRegion r = context.getRegion();
long openProcId = context.getOpenProcId();
long masterSystemTime = context.getMasterSystemTime();
rpcServices.checkOpen();
LOG.info("Post open deploy tasks for {}, pid={}, masterSystemTime={}",
r.getRegionInfo().getRegionNameAsString(), openProcId, masterSystemTime);
// Do checks to see if we need to compact (references or too many files)
// Skip compaction check if region is read only
if (!r.isReadOnly()) {
for (HStore s : r.stores.values()) {
if (s.hasReferences() || s.needsCompaction()) {
this.compactSplitThread.requestSystemCompaction(r, s, "Opening Region");
}
}
}
long openSeqNum = r.getOpenSeqNum();
if (openSeqNum == HConstants.NO_SEQNUM) {
// If we opened a region, we should have read some sequence number from it.
LOG.error(
"No sequence number found when opening " + r.getRegionInfo().getRegionNameAsString());
openSeqNum = 0;
}
// Notify master
if (!reportRegionStateTransition(new RegionStateTransitionContext(TransitionCode.OPENED,
openSeqNum, openProcId, masterSystemTime, r.getRegionInfo()))) {
throw new IOException(
"Failed to report opened region to master: " + r.getRegionInfo().getRegionNameAsString());
}
triggerFlushInPrimaryRegion(r);
LOG.debug("Finished post open deploy task for " + r.getRegionInfo().getRegionNameAsString());
}
/**
* Helper method for use in tests. Skip the region transition report when there's no master
* around to receive it.
*/
private boolean skipReportingTransition(final RegionStateTransitionContext context) {
final TransitionCode code = context.getCode();
final long openSeqNum = context.getOpenSeqNum();
long masterSystemTime = context.getMasterSystemTime();
final RegionInfo[] hris = context.getHris();
if (code == TransitionCode.OPENED) {
Preconditions.checkArgument(hris != null && hris.length == 1);
if (hris[0].isMetaRegion()) {
try {
MetaTableLocator.setMetaLocation(getZooKeeper(), serverName,
hris[0].getReplicaId(), RegionState.State.OPEN);
} catch (KeeperException e) {
LOG.info("Failed to update meta location", e);
return false;
}
} else {
try {
MetaTableAccessor.updateRegionLocation(asyncClusterConnection.toConnection(), hris[0],
serverName, openSeqNum, masterSystemTime);
} catch (IOException e) {
LOG.info("Failed to update meta", e);
return false;
}
}
}
return true;
}
private ReportRegionStateTransitionRequest createReportRegionStateTransitionRequest(
final RegionStateTransitionContext context) {
final TransitionCode code = context.getCode();
final long openSeqNum = context.getOpenSeqNum();
final RegionInfo[] hris = context.getHris();
final long[] procIds = context.getProcIds();
ReportRegionStateTransitionRequest.Builder builder =
ReportRegionStateTransitionRequest.newBuilder();
builder.setServer(ProtobufUtil.toServerName(serverName));
RegionStateTransition.Builder transition = builder.addTransitionBuilder();
transition.setTransitionCode(code);
if (code == TransitionCode.OPENED && openSeqNum >= 0) {
transition.setOpenSeqNum(openSeqNum);
}
for (RegionInfo hri: hris) {
transition.addRegionInfo(ProtobufUtil.toRegionInfo(hri));
}
for (long procId: procIds) {
transition.addProcId(procId);
}
return builder.build();
}
@Override
public boolean reportRegionStateTransition(final RegionStateTransitionContext context) {
if (TEST_SKIP_REPORTING_TRANSITION) {
return skipReportingTransition(context);
}
final ReportRegionStateTransitionRequest request =
createReportRegionStateTransitionRequest(context);
// Time to pause if master says 'please hold'. Make configurable if needed.
final long initPauseTime = 1000;
int tries = 0;
long pauseTime;
// Keep looping till we get an error. We want to send reports even though server is going down.
// Only go down if clusterConnection is null. It is set to null almost as last thing as the
// HRegionServer does down.
while (this.asyncClusterConnection != null && !this.asyncClusterConnection.isClosed()) {
RegionServerStatusService.BlockingInterface rss = rssStub;
try {
if (rss == null) {
createRegionServerStatusStub();
continue;
}
ReportRegionStateTransitionResponse response =
rss.reportRegionStateTransition(null, request);
if (response.hasErrorMessage()) {
LOG.info("TRANSITION FAILED " + request + ": " + response.getErrorMessage());
break;
}
// Log if we had to retry else don't log unless TRACE. We want to
// know if were successful after an attempt showed in logs as failed.
if (tries > 0 || LOG.isTraceEnabled()) {
LOG.info("TRANSITION REPORTED " + request);
}
// NOTE: Return mid-method!!!
return true;
} catch (ServiceException se) {
IOException ioe = ProtobufUtil.getRemoteException(se);
boolean pause =
ioe instanceof ServerNotRunningYetException || ioe instanceof PleaseHoldException
|| ioe instanceof CallQueueTooBigException;
if (pause) {
// Do backoff else we flood the Master with requests.
pauseTime = ConnectionUtils.getPauseTime(initPauseTime, tries);
} else {
pauseTime = initPauseTime; // Reset.
}
LOG.info("Failed report transition " +
TextFormat.shortDebugString(request) + "; retry (#" + tries + ")" +
(pause?
" after " + pauseTime + "ms delay (Master is coming online...).":
" immediately."),
ioe);
if (pause) Threads.sleep(pauseTime);
tries++;
if (rssStub == rss) {
rssStub = null;
}
}
}
return false;
}
/**
* Trigger a flush in the primary region replica if this region is a secondary replica. Does not
* block this thread. See RegionReplicaFlushHandler for details.
*/
private void triggerFlushInPrimaryRegion(final HRegion region) {
if (ServerRegionReplicaUtil.isDefaultReplica(region.getRegionInfo())) {
return;
}
if (!ServerRegionReplicaUtil.isRegionReplicaReplicationEnabled(region.conf) ||
!ServerRegionReplicaUtil.isRegionReplicaWaitForPrimaryFlushEnabled(
region.conf)) {
region.setReadsEnabled(true);
return;
}
region.setReadsEnabled(false); // disable reads before marking the region as opened.
// RegionReplicaFlushHandler might reset this.
// Submit it to be handled by one of the handlers so that we do not block OpenRegionHandler
if (this.executorService != null) {
this.executorService.submit(new RegionReplicaFlushHandler(this, region));
} else {
LOG.info("Executor is null; not running flush of primary region replica for {}",
region.getRegionInfo());
}
}
@Override
public RpcServerInterface getRpcServer() {
return rpcServices.rpcServer;
}
@VisibleForTesting
public RSRpcServices getRSRpcServices() {
return rpcServices;
}
/**
* Cause the server to exit without closing the regions it is serving, the log
* it is using and without notifying the master. Used unit testing and on
* catastrophic events such as HDFS is yanked out from under hbase or we OOME.
*
* @param reason
* the reason we are aborting
* @param cause
* the exception that caused the abort, or null
*/
@Override
public void abort(String reason, Throwable cause) {
if (!setAbortRequested()) {
// Abort already in progress, ignore the new request.
LOG.debug(
"Abort already in progress. Ignoring the current request with reason: {}", reason);
return;
}
String msg = "***** ABORTING region server " + this + ": " + reason + " *****";
if (cause != null) {
LOG.error(HBaseMarkers.FATAL, msg, cause);
} else {
LOG.error(HBaseMarkers.FATAL, msg);
}
// HBASE-4014: show list of coprocessors that were loaded to help debug
// regionserver crashes.Note that we're implicitly using
// java.util.HashSet's toString() method to print the coprocessor names.
LOG.error(HBaseMarkers.FATAL, "RegionServer abort: loaded coprocessors are: " +
CoprocessorHost.getLoadedCoprocessors());
// Try and dump metrics if abort -- might give clue as to how fatal came about....
try {
LOG.info("Dump of metrics as JSON on abort: " + DumpRegionServerMetrics.dumpMetrics());
} catch (MalformedObjectNameException | IOException e) {
LOG.warn("Failed dumping metrics", e);
}
// Do our best to report our abort to the master, but this may not work
try {
if (cause != null) {
msg += "\nCause:\n" + Throwables.getStackTraceAsString(cause);
}
// Report to the master but only if we have already registered with the master.
RegionServerStatusService.BlockingInterface rss = rssStub;
if (rss != null && this.serverName != null) {
ReportRSFatalErrorRequest.Builder builder =
ReportRSFatalErrorRequest.newBuilder();
builder.setServer(ProtobufUtil.toServerName(this.serverName));
builder.setErrorMessage(msg);
rss.reportRSFatalError(null, builder.build());
}
} catch (Throwable t) {
LOG.warn("Unable to report fatal error to master", t);
}
scheduleAbortTimer();
// shutdown should be run as the internal user
stop(reason, true, null);
}
/**
* Sets the abort state if not already set.
* @return True if abortRequested set to True successfully, false if an abort is already in
* progress.
*/
protected boolean setAbortRequested() {
return abortRequested.compareAndSet(false, true);
}
/**
* @see HRegionServer#abort(String, Throwable)
*/
public void abort(String reason) {
abort(reason, null);
}
@Override
public boolean isAborted() {
return abortRequested.get();
}
/*
* Simulate a kill -9 of this server. Exits w/o closing regions or cleaninup
* logs but it does close socket in case want to bring up server on old
* hostname+port immediately.
*/
@VisibleForTesting
protected void kill() {
this.killed = true;
abort("Simulated kill");
}
// Limits the time spent in the shutdown process.
private void scheduleAbortTimer() {
if (this.abortMonitor == null) {
this.abortMonitor = new Timer("Abort regionserver monitor", true);
TimerTask abortTimeoutTask = null;
try {
Constructor<? extends TimerTask> timerTaskCtor =
Class.forName(conf.get(ABORT_TIMEOUT_TASK, SystemExitWhenAbortTimeout.class.getName()))
.asSubclass(TimerTask.class).getDeclaredConstructor();
timerTaskCtor.setAccessible(true);
abortTimeoutTask = timerTaskCtor.newInstance();
} catch (Exception e) {
LOG.warn("Initialize abort timeout task failed", e);
}
if (abortTimeoutTask != null) {
abortMonitor.schedule(abortTimeoutTask, conf.getLong(ABORT_TIMEOUT, DEFAULT_ABORT_TIMEOUT));
}
}
}
/**
* Wait on all threads to finish. Presumption is that all closes and stops
* have already been called.
*/
protected void stopServiceThreads() {
// clean up the scheduled chores
if (this.choreService != null) {
choreService.cancelChore(nonceManagerChore);
choreService.cancelChore(compactionChecker);
choreService.cancelChore(periodicFlusher);
choreService.cancelChore(healthCheckChore);
choreService.cancelChore(executorStatusChore);
choreService.cancelChore(storefileRefresher);
choreService.cancelChore(fsUtilizationChore);
choreService.cancelChore(slowLogTableOpsChore);
// clean up the remaining scheduled chores (in case we missed out any)
choreService.shutdown();
}
if (this.cacheFlusher != null) {
this.cacheFlusher.join();
}
if (this.spanReceiverHost != null) {
this.spanReceiverHost.closeReceivers();
}
if (this.walRoller != null) {
this.walRoller.close();
}
if (this.compactSplitThread != null) {
this.compactSplitThread.join();
}
if (this.executorService != null) this.executorService.shutdown();
if (this.replicationSourceHandler != null &&
this.replicationSourceHandler == this.replicationSinkHandler) {
this.replicationSourceHandler.stopReplicationService();
} else {
if (this.replicationSourceHandler != null) {
this.replicationSourceHandler.stopReplicationService();
}
if (this.replicationSinkHandler != null) {
this.replicationSinkHandler.stopReplicationService();
}
}
}
/**
* @return Return the object that implements the replication
* source executorService.
*/
@Override
public ReplicationSourceService getReplicationSourceService() {
return replicationSourceHandler;
}
/**
* @return Return the object that implements the replication sink executorService.
*/
public ReplicationSinkService getReplicationSinkService() {
return replicationSinkHandler;
}
/**
* Get the current master from ZooKeeper and open the RPC connection to it.
* To get a fresh connection, the current rssStub must be null.
* Method will block until a master is available. You can break from this
* block by requesting the server stop.
*
* @return master + port, or null if server has been stopped
*/
private synchronized ServerName createRegionServerStatusStub() {
// Create RS stub without refreshing the master node from ZK, use cached data
return createRegionServerStatusStub(false);
}
/**
* Get the current master from ZooKeeper and open the RPC connection to it. To get a fresh
* connection, the current rssStub must be null. Method will block until a master is available.
* You can break from this block by requesting the server stop.
* @param refresh If true then master address will be read from ZK, otherwise use cached data
* @return master + port, or null if server has been stopped
*/
@VisibleForTesting
protected synchronized ServerName createRegionServerStatusStub(boolean refresh) {
if (rssStub != null) {
return masterAddressTracker.getMasterAddress();
}
ServerName sn = null;
long previousLogTime = 0;
RegionServerStatusService.BlockingInterface intRssStub = null;
LockService.BlockingInterface intLockStub = null;
boolean interrupted = false;
try {
while (keepLooping()) {
sn = this.masterAddressTracker.getMasterAddress(refresh);
if (sn == null) {
if (!keepLooping()) {
// give up with no connection.
LOG.debug("No master found and cluster is stopped; bailing out");
return null;
}
if (System.currentTimeMillis() > (previousLogTime + 1000)) {
LOG.debug("No master found; retry");
previousLogTime = System.currentTimeMillis();
}
refresh = true; // let's try pull it from ZK directly
if (sleepInterrupted(200)) {
interrupted = true;
}
continue;
}
// If we are on the active master, use the shortcut
if (this instanceof HMaster && sn.equals(getServerName())) {
// Wrap the shortcut in a class providing our version to the calls where it's relevant.
// Normally, RpcServer-based threadlocals do that.
intRssStub = new MasterRpcServicesVersionWrapper(((HMaster)this).getMasterRpcServices());
intLockStub = ((HMaster)this).getMasterRpcServices();
break;
}
try {
BlockingRpcChannel channel =
this.rpcClient.createBlockingRpcChannel(sn, userProvider.getCurrent(),
shortOperationTimeout);
intRssStub = RegionServerStatusService.newBlockingStub(channel);
intLockStub = LockService.newBlockingStub(channel);
break;
} catch (IOException e) {
if (System.currentTimeMillis() > (previousLogTime + 1000)) {
e = e instanceof RemoteException ?
((RemoteException)e).unwrapRemoteException() : e;
if (e instanceof ServerNotRunningYetException) {
LOG.info("Master isn't available yet, retrying");
} else {
LOG.warn("Unable to connect to master. Retrying. Error was:", e);
}
previousLogTime = System.currentTimeMillis();
}
if (sleepInterrupted(200)) {
interrupted = true;
}
}
}
} finally {
if (interrupted) {
Thread.currentThread().interrupt();
}
}
this.rssStub = intRssStub;
this.lockStub = intLockStub;
return sn;
}
/**
* @return True if we should break loop because cluster is going down or
* this server has been stopped or hdfs has gone bad.
*/
private boolean keepLooping() {
return !this.stopped && isClusterUp();
}
/*
* Let the master know we're here Run initialization using parameters passed
* us by the master.
* @return A Map of key/value configurations we got from the Master else
* null if we failed to register.
* @throws IOException
*/
private RegionServerStartupResponse reportForDuty() throws IOException {
if (this.masterless) return RegionServerStartupResponse.getDefaultInstance();
ServerName masterServerName = createRegionServerStatusStub(true);
RegionServerStatusService.BlockingInterface rss = rssStub;
if (masterServerName == null || rss == null) return null;
RegionServerStartupResponse result = null;
try {
rpcServices.requestCount.reset();
rpcServices.rpcGetRequestCount.reset();
rpcServices.rpcScanRequestCount.reset();
rpcServices.rpcMultiRequestCount.reset();
rpcServices.rpcMutateRequestCount.reset();
LOG.info("reportForDuty to master=" + masterServerName + " with port="
+ rpcServices.isa.getPort() + ", startcode=" + this.startcode);
long now = EnvironmentEdgeManager.currentTime();
int port = rpcServices.isa.getPort();
RegionServerStartupRequest.Builder request = RegionServerStartupRequest.newBuilder();
if (!StringUtils.isBlank(useThisHostnameInstead)) {
request.setUseThisHostnameInstead(useThisHostnameInstead);
}
request.setPort(port);
request.setServerStartCode(this.startcode);
request.setServerCurrentTime(now);
result = rss.regionServerStartup(null, request.build());
} catch (ServiceException se) {
IOException ioe = ProtobufUtil.getRemoteException(se);
if (ioe instanceof ClockOutOfSyncException) {
LOG.error(HBaseMarkers.FATAL, "Master rejected startup because clock is out of sync",
ioe);
// Re-throw IOE will cause RS to abort
throw ioe;
} else if (ioe instanceof ServerNotRunningYetException) {
LOG.debug("Master is not running yet");
} else {
LOG.warn("error telling master we are up", se);
}
rssStub = null;
}
return result;
}
@Override
public RegionStoreSequenceIds getLastSequenceId(byte[] encodedRegionName) {
try {
GetLastFlushedSequenceIdRequest req =
RequestConverter.buildGetLastFlushedSequenceIdRequest(encodedRegionName);
RegionServerStatusService.BlockingInterface rss = rssStub;
if (rss == null) { // Try to connect one more time
createRegionServerStatusStub();
rss = rssStub;
if (rss == null) {
// Still no luck, we tried
LOG.warn("Unable to connect to the master to check " + "the last flushed sequence id");
return RegionStoreSequenceIds.newBuilder().setLastFlushedSequenceId(HConstants.NO_SEQNUM)
.build();
}
}
GetLastFlushedSequenceIdResponse resp = rss.getLastFlushedSequenceId(null, req);
return RegionStoreSequenceIds.newBuilder()
.setLastFlushedSequenceId(resp.getLastFlushedSequenceId())
.addAllStoreSequenceId(resp.getStoreLastFlushedSequenceIdList()).build();
} catch (ServiceException e) {
LOG.warn("Unable to connect to the master to check the last flushed sequence id", e);
return RegionStoreSequenceIds.newBuilder().setLastFlushedSequenceId(HConstants.NO_SEQNUM)
.build();
}
}
/**
* Close meta region if we carry it
* @param abort Whether we're running an abort.
*/
private void closeMetaTableRegions(final boolean abort) {
HRegion meta = null;
this.onlineRegionsLock.writeLock().lock();
try {
for (Map.Entry<String, HRegion> e: onlineRegions.entrySet()) {
RegionInfo hri = e.getValue().getRegionInfo();
if (hri.isMetaRegion()) {
meta = e.getValue();
}
if (meta != null) break;
}
} finally {
this.onlineRegionsLock.writeLock().unlock();
}
if (meta != null) closeRegionIgnoreErrors(meta.getRegionInfo(), abort);
}
/**
* Schedule closes on all user regions.
* Should be safe calling multiple times because it wont' close regions
* that are already closed or that are closing.
* @param abort Whether we're running an abort.
*/
private void closeUserRegions(final boolean abort) {
this.onlineRegionsLock.writeLock().lock();
try {
for (Map.Entry<String, HRegion> e: this.onlineRegions.entrySet()) {
HRegion r = e.getValue();
if (!r.getRegionInfo().isMetaRegion() && r.isAvailable()) {
// Don't update zk with this close transition; pass false.
closeRegionIgnoreErrors(r.getRegionInfo(), abort);
}
}
} finally {
this.onlineRegionsLock.writeLock().unlock();
}
}
/** @return the info server */
public InfoServer getInfoServer() {
return infoServer;
}
/**
* @return true if a stop has been requested.
*/
@Override
public boolean isStopped() {
return this.stopped;
}
@Override
public boolean isStopping() {
return this.stopping;
}
@Override
public Configuration getConfiguration() {
return conf;
}
protected Map<String, HRegion> getOnlineRegions() {
return this.onlineRegions;
}
public int getNumberOfOnlineRegions() {
return this.onlineRegions.size();
}
/**
* For tests, web ui and metrics.
* This method will only work if HRegionServer is in the same JVM as client;
* HRegion cannot be serialized to cross an rpc.
*/
public Collection<HRegion> getOnlineRegionsLocalContext() {
Collection<HRegion> regions = this.onlineRegions.values();
return Collections.unmodifiableCollection(regions);
}
@Override
public void addRegion(HRegion region) {
this.onlineRegions.put(region.getRegionInfo().getEncodedName(), region);
configurationManager.registerObserver(region);
}
private void addRegion(SortedMap<Long, Collection<HRegion>> sortedRegions, HRegion region,
long size) {
if (!sortedRegions.containsKey(size)) {
sortedRegions.put(size, new ArrayList<>());
}
sortedRegions.get(size).add(region);
}
/**
* @return A new Map of online regions sorted by region off-heap size with the first entry being
* the biggest.
*/
SortedMap<Long, Collection<HRegion>> getCopyOfOnlineRegionsSortedByOffHeapSize() {
// we'll sort the regions in reverse
SortedMap<Long, Collection<HRegion>> sortedRegions = new TreeMap<>(Comparator.reverseOrder());
// Copy over all regions. Regions are sorted by size with biggest first.
for (HRegion region : this.onlineRegions.values()) {
addRegion(sortedRegions, region, region.getMemStoreOffHeapSize());
}
return sortedRegions;
}
/**
* @return A new Map of online regions sorted by region heap size with the first entry being the
* biggest.
*/
SortedMap<Long, Collection<HRegion>> getCopyOfOnlineRegionsSortedByOnHeapSize() {
// we'll sort the regions in reverse
SortedMap<Long, Collection<HRegion>> sortedRegions = new TreeMap<>(Comparator.reverseOrder());
// Copy over all regions. Regions are sorted by size with biggest first.
for (HRegion region : this.onlineRegions.values()) {
addRegion(sortedRegions, region, region.getMemStoreHeapSize());
}
return sortedRegions;
}
/**
* @return time stamp in millis of when this region server was started
*/
public long getStartcode() {
return this.startcode;
}
/** @return reference to FlushRequester */
@Override
public FlushRequester getFlushRequester() {
return this.cacheFlusher;
}
@Override
public CompactionRequester getCompactionRequestor() {
return this.compactSplitThread;
}
@Override
public LeaseManager getLeaseManager() {
return leaseManager;
}
/**
* @return Return the rootDir.
*/
protected Path getDataRootDir() {
return dataRootDir;
}
@Override
public FileSystem getFileSystem() {
return dataFs;
}
/**
* @return {@code true} when the data file system is available, {@code false} otherwise.
*/
boolean isDataFileSystemOk() {
return this.dataFsOk;
}
/**
* @return Return the walRootDir.
*/
public Path getWALRootDir() {
return walRootDir;
}
/**
* @return Return the walFs.
*/
public FileSystem getWALFileSystem() {
return walFs;
}
@Override
public String toString() {
return getServerName().toString();
}
@Override
public ZKWatcher getZooKeeper() {
return zooKeeper;
}
@Override
public CoordinatedStateManager getCoordinatedStateManager() {
return csm;
}
@Override
public ServerName getServerName() {
return serverName;
}
public RegionServerCoprocessorHost getRegionServerCoprocessorHost(){
return this.rsHost;
}
@Override
public ConcurrentMap<byte[], Boolean> getRegionsInTransitionInRS() {
return this.regionsInTransitionInRS;
}
@Override
public ExecutorService getExecutorService() {
return executorService;
}
@Override
public ChoreService getChoreService() {
return choreService;
}
@Override
public RegionServerRpcQuotaManager getRegionServerRpcQuotaManager() {
return rsQuotaManager;
}
//
// Main program and support routines
//
/**
* Load the replication executorService objects, if any
*/
private static void createNewReplicationInstance(Configuration conf, HRegionServer server,
FileSystem walFs, Path walDir, Path oldWALDir, WALFactory walFactory) throws IOException {
// read in the name of the source replication class from the config file.
String sourceClassname = conf.get(HConstants.REPLICATION_SOURCE_SERVICE_CLASSNAME,
HConstants.REPLICATION_SERVICE_CLASSNAME_DEFAULT);
// read in the name of the sink replication class from the config file.
String sinkClassname = conf.get(HConstants.REPLICATION_SINK_SERVICE_CLASSNAME,
HConstants.REPLICATION_SERVICE_CLASSNAME_DEFAULT);
// If both the sink and the source class names are the same, then instantiate
// only one object.
if (sourceClassname.equals(sinkClassname)) {
server.replicationSourceHandler = newReplicationInstance(sourceClassname,
ReplicationSourceService.class, conf, server, walFs, walDir, oldWALDir, walFactory);
server.replicationSinkHandler = (ReplicationSinkService) server.replicationSourceHandler;
} else {
server.replicationSourceHandler = newReplicationInstance(sourceClassname,
ReplicationSourceService.class, conf, server, walFs, walDir, oldWALDir, walFactory);
server.replicationSinkHandler = newReplicationInstance(sinkClassname,
ReplicationSinkService.class, conf, server, walFs, walDir, oldWALDir, walFactory);
}
}
private static <T extends ReplicationService> T newReplicationInstance(String classname,
Class<T> xface, Configuration conf, HRegionServer server, FileSystem walFs, Path logDir,
Path oldLogDir, WALFactory walFactory) throws IOException {
final Class<? extends T> clazz;
try {
ClassLoader classLoader = Thread.currentThread().getContextClassLoader();
clazz = Class.forName(classname, true, classLoader).asSubclass(xface);
} catch (java.lang.ClassNotFoundException nfe) {
throw new IOException("Could not find class for " + classname);
}
T service = ReflectionUtils.newInstance(clazz, conf);
service.initialize(server, walFs, logDir, oldLogDir, walFactory);
return service;
}
public Map<String, ReplicationStatus> getWalGroupsReplicationStatus(){
Map<String, ReplicationStatus> walGroupsReplicationStatus = new TreeMap<>();
if(!this.isOnline()){
return walGroupsReplicationStatus;
}
List<ReplicationSourceInterface> allSources = new ArrayList<>();
allSources.addAll(replicationSourceHandler.getReplicationManager().getSources());
allSources.addAll(replicationSourceHandler.getReplicationManager().getOldSources());
for(ReplicationSourceInterface source: allSources){
walGroupsReplicationStatus.putAll(source.getWalGroupStatus());
}
return walGroupsReplicationStatus;
}
/**
* Utility for constructing an instance of the passed HRegionServer class.
*/
static HRegionServer constructRegionServer(
final Class<? extends HRegionServer> regionServerClass,
final Configuration conf
) {
try {
Constructor<? extends HRegionServer> c =
regionServerClass.getConstructor(Configuration.class);
return c.newInstance(conf);
} catch (Exception e) {
throw new RuntimeException("Failed construction of " + "Regionserver: "
+ regionServerClass.toString(), e);
}
}
/**
* @see org.apache.hadoop.hbase.regionserver.HRegionServerCommandLine
*/
public static void main(String[] args) {
LOG.info("STARTING executorService " + HRegionServer.class.getSimpleName());
VersionInfo.logVersion();
Configuration conf = HBaseConfiguration.create();
@SuppressWarnings("unchecked")
Class<? extends HRegionServer> regionServerClass = (Class<? extends HRegionServer>) conf
.getClass(HConstants.REGION_SERVER_IMPL, HRegionServer.class);
new HRegionServerCommandLine(regionServerClass).doMain(args);
}
/**
* Gets the online regions of the specified table.
* This method looks at the in-memory onlineRegions. It does not go to <code>hbase:meta</code>.
* Only returns <em>online</em> regions. If a region on this table has been
* closed during a disable, etc., it will not be included in the returned list.
* So, the returned list may not necessarily be ALL regions in this table, its
* all the ONLINE regions in the table.
* @param tableName table to limit the scope of the query
* @return Online regions from <code>tableName</code>
*/
@Override
public List<HRegion> getRegions(TableName tableName) {
List<HRegion> tableRegions = new ArrayList<>();
synchronized (this.onlineRegions) {
for (HRegion region: this.onlineRegions.values()) {
RegionInfo regionInfo = region.getRegionInfo();
if(regionInfo.getTable().equals(tableName)) {
tableRegions.add(region);
}
}
}
return tableRegions;
}
@Override
public List<HRegion> getRegions() {
List<HRegion> allRegions;
synchronized (this.onlineRegions) {
// Return a clone copy of the onlineRegions
allRegions = new ArrayList<>(onlineRegions.values());
}
return allRegions;
}
/**
* Gets the online tables in this RS.
* This method looks at the in-memory onlineRegions.
* @return all the online tables in this RS
*/
public Set<TableName> getOnlineTables() {
Set<TableName> tables = new HashSet<>();
synchronized (this.onlineRegions) {
for (Region region: this.onlineRegions.values()) {
tables.add(region.getTableDescriptor().getTableName());
}
}
return tables;
}
public String[] getRegionServerCoprocessors() {
TreeSet<String> coprocessors = new TreeSet<>();
try {
coprocessors.addAll(getWAL(null).getCoprocessorHost().getCoprocessors());
} catch (IOException exception) {
LOG.warn("Exception attempting to fetch wal coprocessor information for the common wal; " +
"skipping.");
LOG.debug("Exception details for failure to fetch wal coprocessor information.", exception);
}
Collection<HRegion> regions = getOnlineRegionsLocalContext();
for (HRegion region: regions) {
coprocessors.addAll(region.getCoprocessorHost().getCoprocessors());
try {
coprocessors.addAll(getWAL(region.getRegionInfo()).getCoprocessorHost().getCoprocessors());
} catch (IOException exception) {
LOG.warn("Exception attempting to fetch wal coprocessor information for region " + region +
"; skipping.");
LOG.debug("Exception details for failure to fetch wal coprocessor information.", exception);
}
}
coprocessors.addAll(rsHost.getCoprocessors());
return coprocessors.toArray(new String[0]);
}
/**
* Try to close the region, logs a warning on failure but continues.
* @param region Region to close
*/
private void closeRegionIgnoreErrors(RegionInfo region, final boolean abort) {
try {
if (!closeRegion(region.getEncodedName(), abort, null)) {
LOG.warn("Failed to close " + region.getRegionNameAsString() +
" - ignoring and continuing");
}
} catch (IOException e) {
LOG.warn("Failed to close " + region.getRegionNameAsString() +
" - ignoring and continuing", e);
}
}
/**
* Close asynchronously a region, can be called from the master or internally by the regionserver
* when stopping. If called from the master, the region will update the status.
*
* <p>
* If an opening was in progress, this method will cancel it, but will not start a new close. The
* coprocessors are not called in this case. A NotServingRegionException exception is thrown.
* </p>
* <p>
* If a close was in progress, this new request will be ignored, and an exception thrown.
* </p>
*
* @param encodedName Region to close
* @param abort True if we are aborting
* @param destination Where the Region is being moved too... maybe null if unknown.
* @return True if closed a region.
* @throws NotServingRegionException if the region is not online
*/
protected boolean closeRegion(String encodedName, final boolean abort,
final ServerName destination)
throws NotServingRegionException {
//Check for permissions to close.
HRegion actualRegion = this.getRegion(encodedName);
// Can be null if we're calling close on a region that's not online
if ((actualRegion != null) && (actualRegion.getCoprocessorHost() != null)) {
try {
actualRegion.getCoprocessorHost().preClose(false);
} catch (IOException exp) {
LOG.warn("Unable to close region: the coprocessor launched an error ", exp);
return false;
}
}
// previous can come back 'null' if not in map.
final Boolean previous = this.regionsInTransitionInRS.putIfAbsent(Bytes.toBytes(encodedName),
Boolean.FALSE);
if (Boolean.TRUE.equals(previous)) {
LOG.info("Received CLOSE for the region:" + encodedName + " , which we are already " +
"trying to OPEN. Cancelling OPENING.");
if (!regionsInTransitionInRS.replace(Bytes.toBytes(encodedName), previous, Boolean.FALSE)) {
// The replace failed. That should be an exceptional case, but theoretically it can happen.
// We're going to try to do a standard close then.
LOG.warn("The opening for region " + encodedName + " was done before we could cancel it." +
" Doing a standard close now");
return closeRegion(encodedName, abort, destination);
}
// Let's get the region from the online region list again
actualRegion = this.getRegion(encodedName);
if (actualRegion == null) { // If already online, we still need to close it.
LOG.info("The opening previously in progress has been cancelled by a CLOSE request.");
// The master deletes the znode when it receives this exception.
throw new NotServingRegionException("The region " + encodedName +
" was opening but not yet served. Opening is cancelled.");
}
} else if (previous == null) {
LOG.info("Received CLOSE for {}", encodedName);
} else if (Boolean.FALSE.equals(previous)) {
LOG.info("Received CLOSE for the region: " + encodedName +
", which we are already trying to CLOSE, but not completed yet");
return true;
}
if (actualRegion == null) {
LOG.debug("Received CLOSE for a region which is not online, and we're not opening.");
this.regionsInTransitionInRS.remove(Bytes.toBytes(encodedName));
// The master deletes the znode when it receives this exception.
throw new NotServingRegionException("The region " + encodedName +
" is not online, and is not opening.");
}
CloseRegionHandler crh;
final RegionInfo hri = actualRegion.getRegionInfo();
if (hri.isMetaRegion()) {
crh = new CloseMetaHandler(this, this, hri, abort);
} else {
crh = new CloseRegionHandler(this, this, hri, abort, destination);
}
this.executorService.submit(crh);
return true;
}
/**
* @return HRegion for the passed binary <code>regionName</code> or null if
* named region is not member of the online regions.
*/
public HRegion getOnlineRegion(final byte[] regionName) {
String encodedRegionName = RegionInfo.encodeRegionName(regionName);
return this.onlineRegions.get(encodedRegionName);
}
@Override
public HRegion getRegion(final String encodedRegionName) {
return this.onlineRegions.get(encodedRegionName);
}
@Override
public boolean removeRegion(final HRegion r, ServerName destination) {
HRegion toReturn = this.onlineRegions.remove(r.getRegionInfo().getEncodedName());
metricsRegionServerImpl.requestsCountCache.remove(r.getRegionInfo().getEncodedName());
if (destination != null) {
long closeSeqNum = r.getMaxFlushedSeqId();
if (closeSeqNum == HConstants.NO_SEQNUM) {
// No edits in WAL for this region; get the sequence number when the region was opened.
closeSeqNum = r.getOpenSeqNum();
if (closeSeqNum == HConstants.NO_SEQNUM) closeSeqNum = 0;
}
boolean selfMove = ServerName.isSameAddress(destination, this.getServerName());
addToMovedRegions(r.getRegionInfo().getEncodedName(), destination, closeSeqNum, selfMove);
if (selfMove) {
this.regionServerAccounting.getRetainedRegionRWRequestsCnt().put(r.getRegionInfo().getEncodedName()
, new Pair<>(r.getReadRequestsCount(), r.getWriteRequestsCount()));
}
}
this.regionFavoredNodesMap.remove(r.getRegionInfo().getEncodedName());
configurationManager.deregisterObserver(r);
return toReturn != null;
}
/**
* Protected Utility method for safely obtaining an HRegion handle.
*
* @param regionName Name of online {@link HRegion} to return
* @return {@link HRegion} for <code>regionName</code>
*/
protected HRegion getRegion(final byte[] regionName)
throws NotServingRegionException {
String encodedRegionName = RegionInfo.encodeRegionName(regionName);
return getRegionByEncodedName(regionName, encodedRegionName);
}
public HRegion getRegionByEncodedName(String encodedRegionName)
throws NotServingRegionException {
return getRegionByEncodedName(null, encodedRegionName);
}
private HRegion getRegionByEncodedName(byte[] regionName, String encodedRegionName)
throws NotServingRegionException {
HRegion region = this.onlineRegions.get(encodedRegionName);
if (region == null) {
MovedRegionInfo moveInfo = getMovedRegion(encodedRegionName);
if (moveInfo != null) {
throw new RegionMovedException(moveInfo.getServerName(), moveInfo.getSeqNum());
}
Boolean isOpening = this.regionsInTransitionInRS.get(Bytes.toBytes(encodedRegionName));
String regionNameStr = regionName == null?
encodedRegionName: Bytes.toStringBinary(regionName);
if (isOpening != null && isOpening) {
throw new RegionOpeningException("Region " + regionNameStr +
" is opening on " + this.serverName);
}
throw new NotServingRegionException("" + regionNameStr +
" is not online on " + this.serverName);
}
return region;
}
/**
* Cleanup after Throwable caught invoking method. Converts <code>t</code> to
* IOE if it isn't already.
*
* @param t Throwable
* @param msg Message to log in error. Can be null.
* @return Throwable converted to an IOE; methods can only let out IOEs.
*/
private Throwable cleanup(final Throwable t, final String msg) {
// Don't log as error if NSRE; NSRE is 'normal' operation.
if (t instanceof NotServingRegionException) {
LOG.debug("NotServingRegionException; " + t.getMessage());
return t;
}
Throwable e = t instanceof RemoteException ? ((RemoteException) t).unwrapRemoteException() : t;
if (msg == null) {
LOG.error("", e);
} else {
LOG.error(msg, e);
}
if (!rpcServices.checkOOME(t)) {
checkFileSystem();
}
return t;
}
/**
* @param msg Message to put in new IOE if passed <code>t</code> is not an IOE
* @return Make <code>t</code> an IOE if it isn't already.
*/
private IOException convertThrowableToIOE(final Throwable t, final String msg) {
return (t instanceof IOException ? (IOException) t : msg == null
|| msg.length() == 0 ? new IOException(t) : new IOException(msg, t));
}
/**
* Checks to see if the file system is still accessible. If not, sets
* abortRequested and stopRequested
*
* @return false if file system is not available
*/
boolean checkFileSystem() {
if (this.dataFsOk && this.dataFs != null) {
try {
FSUtils.checkFileSystemAvailable(this.dataFs);
} catch (IOException e) {
abort("File System not available", e);
this.dataFsOk = false;
}
}
return this.dataFsOk;
}
@Override
public void updateRegionFavoredNodesMapping(String encodedRegionName,
List<org.apache.hadoop.hbase.shaded.protobuf.generated.HBaseProtos.ServerName> favoredNodes) {
InetSocketAddress[] addr = new InetSocketAddress[favoredNodes.size()];
// Refer to the comment on the declaration of regionFavoredNodesMap on why
// it is a map of region name to InetSocketAddress[]
for (int i = 0; i < favoredNodes.size(); i++) {
addr[i] = InetSocketAddress.createUnresolved(favoredNodes.get(i).getHostName(),
favoredNodes.get(i).getPort());
}
regionFavoredNodesMap.put(encodedRegionName, addr);
}
/**
* Return the favored nodes for a region given its encoded name. Look at the
* comment around {@link #regionFavoredNodesMap} on why it is InetSocketAddress[]
*
* @return array of favored locations
*/
@Override
public InetSocketAddress[] getFavoredNodesForRegion(String encodedRegionName) {
return regionFavoredNodesMap.get(encodedRegionName);
}
@Override
public ServerNonceManager getNonceManager() {
return this.nonceManager;
}
private static class MovedRegionInfo {
private final ServerName serverName;
private final long seqNum;
MovedRegionInfo(ServerName serverName, long closeSeqNum) {
this.serverName = serverName;
this.seqNum = closeSeqNum;
}
public ServerName getServerName() {
return serverName;
}
public long getSeqNum() {
return seqNum;
}
}
/**
* We need a timeout. If not there is a risk of giving a wrong information: this would double
* the number of network calls instead of reducing them.
*/
private static final int TIMEOUT_REGION_MOVED = (2 * 60 * 1000);
private void addToMovedRegions(String encodedName, ServerName destination, long closeSeqNum, boolean selfMove) {
if (selfMove) {
LOG.warn("Not adding moved region record: " + encodedName + " to self.");
return;
}
LOG.info("Adding " + encodedName + " move to " + destination + " record at close sequenceid=" +
closeSeqNum);
movedRegionInfoCache.put(encodedName, new MovedRegionInfo(destination, closeSeqNum));
}
void removeFromMovedRegions(String encodedName) {
movedRegionInfoCache.invalidate(encodedName);
}
@VisibleForTesting
public MovedRegionInfo getMovedRegion(String encodedRegionName) {
return movedRegionInfoCache.getIfPresent(encodedRegionName);
}
@VisibleForTesting
public int movedRegionCacheExpiredTime() {
return TIMEOUT_REGION_MOVED;
}
private String getMyEphemeralNodePath() {
return ZNodePaths.joinZNode(this.zooKeeper.getZNodePaths().rsZNode, getServerName().toString());
}
private boolean isHealthCheckerConfigured() {
String healthScriptLocation = this.conf.get(HConstants.HEALTH_SCRIPT_LOC);
return org.apache.commons.lang3.StringUtils.isNotBlank(healthScriptLocation);
}
/**
* @return the underlying {@link CompactSplit} for the servers
*/
public CompactSplit getCompactSplitThread() {
return this.compactSplitThread;
}
CoprocessorServiceResponse execRegionServerService(
@SuppressWarnings("UnusedParameters") final RpcController controller,
final CoprocessorServiceRequest serviceRequest) throws ServiceException {
try {
ServerRpcController serviceController = new ServerRpcController();
CoprocessorServiceCall call = serviceRequest.getCall();
String serviceName = call.getServiceName();
Service service = coprocessorServiceHandlers.get(serviceName);
if (service == null) {
throw new UnknownProtocolException(null, "No registered coprocessor executorService found for " +
serviceName);
}
ServiceDescriptor serviceDesc =
service.getDescriptorForType();
String methodName = call.getMethodName();
MethodDescriptor methodDesc =
serviceDesc.findMethodByName(methodName);
if (methodDesc == null) {
throw new UnknownProtocolException(service.getClass(), "Unknown method " + methodName +
" called on executorService " + serviceName);
}
Message request =
CoprocessorRpcUtils.getRequest(service, methodDesc, call.getRequest());
final Message.Builder responseBuilder =
service.getResponsePrototype(methodDesc).newBuilderForType();
service.callMethod(methodDesc, serviceController, request, message -> {
if (message != null) {
responseBuilder.mergeFrom(message);
}
});
IOException exception = CoprocessorRpcUtils.getControllerException(serviceController);
if (exception != null) {
throw exception;
}
return CoprocessorRpcUtils.getResponse(responseBuilder.build(), HConstants.EMPTY_BYTE_ARRAY);
} catch (IOException ie) {
throw new ServiceException(ie);
}
}
/**
* May be null if this is a master which not carry table.
*
* @return The block cache instance used by the regionserver.
*/
@Override
public Optional<BlockCache> getBlockCache() {
return Optional.ofNullable(this.blockCache);
}
/**
* May be null if this is a master which not carry table.
*
* @return The cache for mob files used by the regionserver.
*/
@Override
public Optional<MobFileCache> getMobFileCache() {
return Optional.ofNullable(this.mobFileCache);
}
@Override
public AccessChecker getAccessChecker() {
return rpcServices.getAccessChecker();
}
@Override
public ZKPermissionWatcher getZKPermissionWatcher() {
return rpcServices.getZkPermissionWatcher();
}
/**
* @return : Returns the ConfigurationManager object for testing purposes.
*/
@VisibleForTesting
ConfigurationManager getConfigurationManager() {
return configurationManager;
}
/**
* @return Return table descriptors implementation.
*/
@Override
public TableDescriptors getTableDescriptors() {
return this.tableDescriptors;
}
/**
* Reload the configuration from disk.
*/
void updateConfiguration() {
LOG.info("Reloading the configuration from disk.");
// Reload the configuration from disk.
conf.reloadConfiguration();
configurationManager.notifyAllObservers(conf);
}
CacheEvictionStats clearRegionBlockCache(Region region) {
long evictedBlocks = 0;
for(Store store : region.getStores()) {
for(StoreFile hFile : store.getStorefiles()) {
evictedBlocks += blockCache.evictBlocksByHfileName(hFile.getPath().getName());
}
}
return CacheEvictionStats.builder()
.withEvictedBlocks(evictedBlocks)
.build();
}
@Override
public double getCompactionPressure() {
double max = 0;
for (Region region : onlineRegions.values()) {
for (Store store : region.getStores()) {
double normCount = store.getCompactionPressure();
if (normCount > max) {
max = normCount;
}
}
}
return max;
}
@Override
public HeapMemoryManager getHeapMemoryManager() {
return hMemManager;
}
MemStoreFlusher getMemStoreFlusher() {
return cacheFlusher;
}
/**
* For testing
* @return whether all wal roll request finished for this regionserver
*/
@VisibleForTesting
public boolean walRollRequestFinished() {
return this.walRoller.walRollFinished();
}
@Override
public ThroughputController getFlushThroughputController() {
return flushThroughputController;
}
@Override
public double getFlushPressure() {
if (getRegionServerAccounting() == null || cacheFlusher == null) {
// return 0 during RS initialization
return 0.0;
}
return getRegionServerAccounting().getFlushPressure();
}
@Override
public void onConfigurationChange(Configuration newConf) {
ThroughputController old = this.flushThroughputController;
if (old != null) {
old.stop("configuration change");
}
this.flushThroughputController = FlushThroughputControllerFactory.create(this, newConf);
try {
Superusers.initialize(newConf);
} catch (IOException e) {
LOG.warn("Failed to initialize SuperUsers on reloading of the configuration");
}
}
@Override
public MetricsRegionServer getMetrics() {
return metricsRegionServer;
}
@Override
public SecureBulkLoadManager getSecureBulkLoadManager() {
return this.secureBulkLoadManager;
}
@Override
public EntityLock regionLock(final List<RegionInfo> regionInfo, final String description,
final Abortable abort) {
final LockServiceClient client =
new LockServiceClient(conf, lockStub, asyncClusterConnection.getNonceGenerator());
return client.regionLock(regionInfo, description, abort);
}
@Override
public void unassign(byte[] regionName) throws IOException {
FutureUtils.get(asyncClusterConnection.getAdmin().unassign(regionName, false));
}
@Override
public RegionServerSpaceQuotaManager getRegionServerSpaceQuotaManager() {
return this.rsSpaceQuotaManager;
}
@Override
public boolean reportFileArchivalForQuotas(TableName tableName,
Collection<Entry<String, Long>> archivedFiles) {
RegionServerStatusService.BlockingInterface rss = rssStub;
if (rss == null || rsSpaceQuotaManager == null) {
// the current server could be stopping.
LOG.trace("Skipping file archival reporting to HMaster as stub is null");
return false;
}
try {
RegionServerStatusProtos.FileArchiveNotificationRequest request =
rsSpaceQuotaManager.buildFileArchiveRequest(tableName, archivedFiles);
rss.reportFileArchival(null, request);
} catch (ServiceException se) {
IOException ioe = ProtobufUtil.getRemoteException(se);
if (ioe instanceof PleaseHoldException) {
if (LOG.isTraceEnabled()) {
LOG.trace("Failed to report file archival(s) to Master because it is initializing."
+ " This will be retried.", ioe);
}
// The Master is coming up. Will retry the report later. Avoid re-creating the stub.
return false;
}
if (rssStub == rss) {
rssStub = null;
}
// re-create the stub if we failed to report the archival
createRegionServerStatusStub(true);
LOG.debug("Failed to report file archival(s) to Master. This will be retried.", ioe);
return false;
}
return true;
}
public NettyEventLoopGroupConfig getEventLoopGroupConfig() {
return eventLoopGroupConfig;
}
@Override
public Connection createConnection(Configuration conf) throws IOException {
User user = UserProvider.instantiate(conf).getCurrent();
return ConnectionFactory.createConnection(conf, null, user);
}
void executeProcedure(long procId, RSProcedureCallable callable) {
executorService.submit(new RSProcedureHandler(this, procId, callable));
}
public void remoteProcedureComplete(long procId, Throwable error) {
procedureResultReporter.complete(procId, error);
}
void reportProcedureDone(ReportProcedureDoneRequest request) throws IOException {
RegionServerStatusService.BlockingInterface rss;
// TODO: juggling class state with an instance variable, outside of a synchronized block :'(
for (;;) {
rss = rssStub;
if (rss != null) {
break;
}
createRegionServerStatusStub();
}
try {
rss.reportProcedureDone(null, request);
} catch (ServiceException se) {
if (rssStub == rss) {
rssStub = null;
}
throw ProtobufUtil.getRemoteException(se);
}
}
/**
* Will ignore the open/close region procedures which already submitted or executed.
*
* When master had unfinished open/close region procedure and restarted, new active master may
* send duplicate open/close region request to regionserver. The open/close request is submitted
* to a thread pool and execute. So first need a cache for submitted open/close region procedures.
*
* After the open/close region request executed and report region transition succeed, cache it in
* executed region procedures cache. See {@link #finishRegionProcedure(long)}. After report region
* transition succeed, master will not send the open/close region request to regionserver again.
* And we thought that the ongoing duplicate open/close region request should not be delayed more
* than 600 seconds. So the executed region procedures cache will expire after 600 seconds.
*
* See HBASE-22404 for more details.
*
* @param procId the id of the open/close region procedure
* @return true if the procedure can be submitted.
*/
boolean submitRegionProcedure(long procId) {
if (procId == -1) {
return true;
}
// Ignore the region procedures which already submitted.
Long previous = submittedRegionProcedures.putIfAbsent(procId, procId);
if (previous != null) {
LOG.warn("Received procedure pid={}, which already submitted, just ignore it", procId);
return false;
}
// Ignore the region procedures which already executed.
if (executedRegionProcedures.getIfPresent(procId) != null) {
LOG.warn("Received procedure pid={}, which already executed, just ignore it", procId);
return false;
}
return true;
}
/**
* See {@link #submitRegionProcedure(long)}.
* @param procId the id of the open/close region procedure
*/
public void finishRegionProcedure(long procId) {
executedRegionProcedures.put(procId, procId);
submittedRegionProcedures.remove(procId);
}
public boolean isShutDown() {
return shutDown;
}
/**
* Force to terminate region server when abort timeout.
*/
private static class SystemExitWhenAbortTimeout extends TimerTask {
public SystemExitWhenAbortTimeout() {
}
@Override
public void run() {
LOG.warn("Aborting region server timed out, terminating forcibly" +
" and does not wait for any running shutdown hooks or finalizers to finish their work." +
" Thread dump to stdout.");
Threads.printThreadInfo(System.out, "Zombie HRegionServer");
Runtime.getRuntime().halt(1);
}
}
@Override
public AsyncClusterConnection getAsyncClusterConnection() {
return asyncClusterConnection;
}
@VisibleForTesting
public CompactedHFilesDischarger getCompactedHFilesDischarger() {
return compactedFileDischarger;
}
}