| /** |
| * 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.io.IOException; |
| import java.util.concurrent.PriorityBlockingQueue; |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.Path; |
| import org.apache.hadoop.hbase.replication.ReplicationException; |
| import org.apache.hadoop.hbase.replication.ReplicationQueueStorage; |
| import org.apache.hadoop.hbase.util.Threads; |
| import org.apache.yetus.audience.InterfaceAudience; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Used by a {@link RecoveredReplicationSource}. |
| */ |
| @InterfaceAudience.Private |
| public class RecoveredReplicationSourceShipper extends ReplicationSourceShipper { |
| private static final Logger LOG = |
| LoggerFactory.getLogger(RecoveredReplicationSourceShipper.class); |
| |
| protected final RecoveredReplicationSource source; |
| private final ReplicationQueueStorage replicationQueues; |
| |
| public RecoveredReplicationSourceShipper(Configuration conf, String walGroupId, |
| PriorityBlockingQueue<Path> queue, RecoveredReplicationSource source, |
| ReplicationQueueStorage queueStorage) { |
| super(conf, walGroupId, queue, source); |
| this.source = source; |
| this.replicationQueues = queueStorage; |
| } |
| |
| @Override |
| protected void postFinish() { |
| source.tryFinish(); |
| } |
| |
| @Override |
| public long getStartPosition() { |
| long startPosition = getRecoveredQueueStartPos(); |
| int numRetries = 0; |
| while (numRetries <= maxRetriesMultiplier) { |
| try { |
| source.locateRecoveredPaths(queue); |
| break; |
| } catch (IOException e) { |
| LOG.error("Error while locating recovered queue paths, attempt #" + numRetries); |
| numRetries++; |
| } |
| } |
| return startPosition; |
| } |
| |
| // If this is a recovered queue, the queue is already full and the first log |
| // normally has a position (unless the RS failed between 2 logs) |
| private long getRecoveredQueueStartPos() { |
| long startPosition = 0; |
| String peerClusterZNode = source.getQueueId(); |
| try { |
| startPosition = this.replicationQueues.getWALPosition(source.getServer().getServerName(), |
| peerClusterZNode, this.queue.peek().getName()); |
| LOG.trace("Recovered queue started with log {} at position {}", this.queue.peek(), |
| startPosition); |
| } catch (ReplicationException e) { |
| terminate("Couldn't get the position of this recovered queue " + peerClusterZNode, e); |
| } |
| return startPosition; |
| } |
| |
| private void terminate(String reason, Exception cause) { |
| if (cause == null) { |
| LOG.info("Closing worker for wal group {} because: {}", this.walGroupId, reason); |
| } else { |
| LOG.error( |
| "Closing worker for wal group " + this.walGroupId + " because an error occurred: " + reason, |
| cause); |
| } |
| entryReader.interrupt(); |
| Threads.shutdown(entryReader, sleepForRetries); |
| this.interrupt(); |
| Threads.shutdown(this, sleepForRetries); |
| LOG.info("ReplicationSourceWorker {} terminated", this.getName()); |
| } |
| } |