| /** |
| * 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 org.apache.yetus.audience.InterfaceAudience; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.hbase.CellComparator; |
| import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor; |
| import org.apache.hadoop.hbase.HConstants; |
| import org.apache.hadoop.hbase.KeepDeletedCells; |
| import org.apache.hadoop.hbase.util.Bytes; |
| import org.apache.hadoop.hbase.util.ClassSize; |
| |
| import org.apache.hbase.thirdparty.com.google.common.annotations.VisibleForTesting; |
| |
| /** |
| * Immutable information for scans over a store. |
| */ |
| // Has to be public for PartitionedMobCompactor to access; ditto on tests making use of a few of |
| // the accessors below. Shutdown access. TODO |
| @VisibleForTesting |
| @InterfaceAudience.Private |
| public class ScanInfo { |
| private byte[] family; |
| private int minVersions; |
| private int maxVersions; |
| private long ttl; |
| private KeepDeletedCells keepDeletedCells; |
| private long timeToPurgeDeletes; |
| private CellComparator comparator; |
| private long tableMaxRowSize; |
| private boolean usePread; |
| private long cellsPerTimeoutCheck; |
| private boolean parallelSeekEnabled; |
| private final long preadMaxBytes; |
| private final boolean newVersionBehavior; |
| |
| public static final long FIXED_OVERHEAD = ClassSize.align(ClassSize.OBJECT |
| + (2 * ClassSize.REFERENCE) + (2 * Bytes.SIZEOF_INT) |
| + (4 * Bytes.SIZEOF_LONG) + (4 * Bytes.SIZEOF_BOOLEAN)); |
| |
| /** |
| * @param conf |
| * @param family {@link ColumnFamilyDescriptor} describing the column family |
| * @param ttl Store's TTL (in ms) |
| * @param timeToPurgeDeletes duration in ms after which a delete marker can be purged during a |
| * major compaction. |
| * @param comparator The store's comparator |
| */ |
| public ScanInfo(Configuration conf, ColumnFamilyDescriptor family, long ttl, |
| long timeToPurgeDeletes, CellComparator comparator) { |
| this(conf, family.getName(), family.getMinVersions(), family.getMaxVersions(), ttl, |
| family.getKeepDeletedCells(), family.getBlocksize(), timeToPurgeDeletes, comparator, |
| family.isNewVersionBehavior()); |
| } |
| |
| private static long getCellsPerTimeoutCheck(Configuration conf) { |
| long perHeartbeat = conf.getLong(StoreScanner.HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK, |
| StoreScanner.DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK); |
| return perHeartbeat > 0 ? perHeartbeat |
| : StoreScanner.DEFAULT_HBASE_CELLS_SCANNED_PER_HEARTBEAT_CHECK; |
| } |
| |
| /** |
| * @param conf |
| * @param family Name of this store's column family |
| * @param minVersions Store's MIN_VERSIONS setting |
| * @param maxVersions Store's VERSIONS setting |
| * @param ttl Store's TTL (in ms) |
| * @param blockSize Store's block size |
| * @param timeToPurgeDeletes duration in ms after which a delete marker can |
| * be purged during a major compaction. |
| * @param keepDeletedCells Store's keepDeletedCells setting |
| * @param comparator The store's comparator |
| */ |
| public ScanInfo(Configuration conf, byte[] family, int minVersions, int maxVersions, long ttl, |
| KeepDeletedCells keepDeletedCells, long blockSize, long timeToPurgeDeletes, |
| CellComparator comparator, boolean newVersionBehavior) { |
| this(family, minVersions, maxVersions, ttl, keepDeletedCells, timeToPurgeDeletes, comparator, |
| conf.getLong(HConstants.TABLE_MAX_ROWSIZE_KEY, HConstants.TABLE_MAX_ROWSIZE_DEFAULT), |
| conf.getBoolean("hbase.storescanner.use.pread", false), getCellsPerTimeoutCheck(conf), |
| conf.getBoolean(StoreScanner.STORESCANNER_PARALLEL_SEEK_ENABLE, false), |
| conf.getLong(StoreScanner.STORESCANNER_PREAD_MAX_BYTES, 4 * blockSize), newVersionBehavior); |
| } |
| |
| private ScanInfo(byte[] family, int minVersions, int maxVersions, long ttl, |
| KeepDeletedCells keepDeletedCells, long timeToPurgeDeletes, CellComparator comparator, |
| long tableMaxRowSize, boolean usePread, long cellsPerTimeoutCheck, |
| boolean parallelSeekEnabled, long preadMaxBytes, boolean newVersionBehavior) { |
| this.family = family; |
| this.minVersions = minVersions; |
| this.maxVersions = maxVersions; |
| this.ttl = ttl; |
| this.keepDeletedCells = keepDeletedCells; |
| this.timeToPurgeDeletes = timeToPurgeDeletes; |
| this.comparator = comparator; |
| this.tableMaxRowSize = tableMaxRowSize; |
| this.usePread = usePread; |
| this.cellsPerTimeoutCheck = cellsPerTimeoutCheck; |
| this.parallelSeekEnabled = parallelSeekEnabled; |
| this.preadMaxBytes = preadMaxBytes; |
| this.newVersionBehavior = newVersionBehavior; |
| } |
| |
| long getTableMaxRowSize() { |
| return this.tableMaxRowSize; |
| } |
| |
| boolean isUsePread() { |
| return this.usePread; |
| } |
| |
| long getCellsPerTimeoutCheck() { |
| return this.cellsPerTimeoutCheck; |
| } |
| |
| boolean isParallelSeekEnabled() { |
| return this.parallelSeekEnabled; |
| } |
| |
| public byte[] getFamily() { |
| return family; |
| } |
| |
| public int getMinVersions() { |
| return minVersions; |
| } |
| |
| public int getMaxVersions() { |
| return maxVersions; |
| } |
| |
| public long getTtl() { |
| return ttl; |
| } |
| |
| public KeepDeletedCells getKeepDeletedCells() { |
| return keepDeletedCells; |
| } |
| |
| public long getTimeToPurgeDeletes() { |
| return timeToPurgeDeletes; |
| } |
| |
| public CellComparator getComparator() { |
| return comparator; |
| } |
| |
| long getPreadMaxBytes() { |
| return preadMaxBytes; |
| } |
| |
| public boolean isNewVersionBehavior() { |
| return newVersionBehavior; |
| } |
| |
| /** |
| * Used for CP users for customizing max versions, ttl and keepDeletedCells. |
| */ |
| ScanInfo customize(int maxVersions, long ttl, KeepDeletedCells keepDeletedCells) { |
| return customize(maxVersions, ttl, keepDeletedCells, minVersions); |
| } |
| |
| ScanInfo customize(int maxVersions, long ttl, KeepDeletedCells keepDeletedCells, |
| int minVersions) { |
| return new ScanInfo(family, minVersions, maxVersions, ttl, keepDeletedCells, timeToPurgeDeletes, |
| comparator, tableMaxRowSize, usePread, cellsPerTimeoutCheck, parallelSeekEnabled, |
| preadMaxBytes, newVersionBehavior); |
| } |
| } |