| /** |
| * 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.replication.regionserver; |
| |
| import java.util.ArrayList; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.stream.Collectors; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.util.Pair; |
| import org.apache.hadoop.hbase.wal.WAL.Entry; |
| import org.apache.yetus.audience.InterfaceAudience; |
| |
| /** |
| * Holds a batch of WAL entries to replicate, along with some statistics |
| */ |
| @InterfaceAudience.Private |
| class WALEntryBatch { |
| |
| // used by recovered replication queue to indicate that all the entries have been read. |
| public static final WALEntryBatch NO_MORE_DATA = new WALEntryBatch(0, null); |
| |
| private List<Pair<Entry, Long>> walEntriesWithSize; |
| |
| // last WAL that was read |
| private Path lastWalPath; |
| // position in WAL of last entry in this batch |
| private long lastWalPosition = 0; |
| // number of distinct row keys in this batch |
| private int nbRowKeys = 0; |
| // number of HFiles |
| private int nbHFiles = 0; |
| // heap size of data we need to replicate |
| private long heapSize = 0; |
| // save the last sequenceid for each region if the table has serial-replication scope |
| private Map<String, Long> lastSeqIds = new HashMap<>(); |
| // indicate that this is the end of the current file |
| private boolean endOfFile; |
| |
| /** |
| * @param lastWalPath Path of the WAL the last entry in this batch was read from |
| */ |
| WALEntryBatch(int maxNbEntries, Path lastWalPath) { |
| this.walEntriesWithSize = new ArrayList<>(maxNbEntries); |
| this.lastWalPath = lastWalPath; |
| } |
| |
| |
| static WALEntryBatch endOfFile(Path lastWalPath) { |
| WALEntryBatch batch = new WALEntryBatch(0, lastWalPath); |
| batch.setLastWalPosition(-1L); |
| batch.setEndOfFile(true); |
| return batch; |
| } |
| |
| public void addEntry(Entry entry, long entrySize) { |
| walEntriesWithSize.add(new Pair<>(entry, entrySize)); |
| } |
| |
| /** |
| * @return the WAL Entries. |
| */ |
| public List<Entry> getWalEntries() { |
| return walEntriesWithSize.stream().map(Pair::getFirst).collect(Collectors.toList()); |
| } |
| |
| /** |
| * @return the WAL Entries. |
| */ |
| public List<Pair<Entry, Long>> getWalEntriesWithSize() { |
| return walEntriesWithSize; |
| } |
| |
| /** |
| * @return the path of the last WAL that was read. |
| */ |
| public Path getLastWalPath() { |
| return lastWalPath; |
| } |
| |
| /** |
| * @return the position in the last WAL that was read. |
| */ |
| public long getLastWalPosition() { |
| return lastWalPosition; |
| } |
| |
| public void setLastWalPosition(long lastWalPosition) { |
| this.lastWalPosition = lastWalPosition; |
| } |
| |
| public int getNbEntries() { |
| return walEntriesWithSize.size(); |
| } |
| |
| /** |
| * @return the number of distinct row keys in this batch |
| */ |
| public int getNbRowKeys() { |
| return nbRowKeys; |
| } |
| |
| /** |
| * @return the number of HFiles in this batch |
| */ |
| public int getNbHFiles() { |
| return nbHFiles; |
| } |
| |
| /** |
| * @return total number of operations in this batch |
| */ |
| public int getNbOperations() { |
| return getNbRowKeys() + getNbHFiles(); |
| } |
| |
| /** |
| * @return the heap size of this batch |
| */ |
| public long getHeapSize() { |
| return heapSize; |
| } |
| |
| /** |
| * @return the last sequenceid for each region if the table has serial-replication scope |
| */ |
| public Map<String, Long> getLastSeqIds() { |
| return lastSeqIds; |
| } |
| |
| public boolean isEndOfFile() { |
| return endOfFile; |
| } |
| |
| public void setEndOfFile(boolean endOfFile) { |
| this.endOfFile = endOfFile; |
| } |
| |
| public void incrementNbRowKeys(int increment) { |
| nbRowKeys += increment; |
| } |
| |
| public void incrementNbHFiles(int increment) { |
| nbHFiles += increment; |
| } |
| |
| public void incrementHeapSize(long increment) { |
| heapSize += increment; |
| } |
| |
| public void setLastSeqId(String region, long sequenceId) { |
| lastSeqIds.put(region, sequenceId); |
| } |
| |
| @Override |
| public String toString() { |
| return "WALEntryBatch [walEntries=" + walEntriesWithSize + ", lastWalPath=" + lastWalPath + |
| ", lastWalPosition=" + lastWalPosition + ", nbRowKeys=" + nbRowKeys + ", nbHFiles=" + |
| nbHFiles + ", heapSize=" + heapSize + ", lastSeqIds=" + lastSeqIds + ", endOfFile=" + |
| endOfFile + "]"; |
| } |
| } |