/** * 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.util.hbck; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.hbase.ServerName; import org.apache.hadoop.hbase.replication.ReplicationException; import org.apache.hadoop.hbase.replication.ReplicationPeerStorage; import org.apache.hadoop.hbase.replication.ReplicationQueueInfo; import org.apache.hadoop.hbase.replication.ReplicationQueueStorage; import org.apache.hadoop.hbase.replication.ReplicationStorageFactory; import org.apache.hadoop.hbase.util.HbckErrorReporter; import org.apache.hadoop.hbase.zookeeper.ZKWatcher; import org.apache.yetus.audience.InterfaceAudience; import org.slf4j.Logger; import org.slf4j.LoggerFactory; /** * Check and fix undeleted replication queues for removed peerId. */ @InterfaceAudience.Private public class ReplicationChecker { private static final Logger LOG = LoggerFactory.getLogger(ReplicationChecker.class); private final HbckErrorReporter errorReporter; // replicator with its queueIds for removed peers private Map<ServerName, List<String>> undeletedQueueIds = new HashMap<>(); // replicator with its undeleted queueIds for removed peers in hfile-refs queue private Set<String> undeletedHFileRefsPeerIds = new HashSet<>(); private final ReplicationPeerStorage peerStorage; private final ReplicationQueueStorage queueStorage; public ReplicationChecker(Configuration conf, ZKWatcher zkw, HbckErrorReporter errorReporter) { this.peerStorage = ReplicationStorageFactory.getReplicationPeerStorage(zkw, conf); this.queueStorage = ReplicationStorageFactory.getReplicationQueueStorage(zkw, conf); this.errorReporter = errorReporter; } public boolean hasUnDeletedQueues() { return errorReporter.getErrorList() .contains(HbckErrorReporter.ERROR_CODE.UNDELETED_REPLICATION_QUEUE); } private Map<ServerName, List<String>> getUnDeletedQueues() throws ReplicationException { Map<ServerName, List<String>> undeletedQueues = new HashMap<>(); Set<String> peerIds = new HashSet<>(peerStorage.listPeerIds()); for (ServerName replicator : queueStorage.getListOfReplicators()) { for (String queueId : queueStorage.getAllQueues(replicator)) { ReplicationQueueInfo queueInfo = new ReplicationQueueInfo(queueId); if (!peerIds.contains(queueInfo.getPeerId())) { undeletedQueues.computeIfAbsent(replicator, key -> new ArrayList<>()).add(queueId); LOG.debug( "Undeleted replication queue for removed peer found: " + "[removedPeerId={}, replicator={}, queueId={}]", queueInfo.getPeerId(), replicator, queueId); } } } return undeletedQueues; } private Set<String> getUndeletedHFileRefsPeers() throws ReplicationException { Set<String> undeletedHFileRefsPeerIds = new HashSet<>(queueStorage.getAllPeersFromHFileRefsQueue()); Set<String> peerIds = new HashSet<>(peerStorage.listPeerIds()); undeletedHFileRefsPeerIds.removeAll(peerIds); if (LOG.isDebugEnabled()) { for (String peerId : undeletedHFileRefsPeerIds) { LOG.debug("Undeleted replication hfile-refs queue for removed peer {} found", peerId); } } return undeletedHFileRefsPeerIds; } public void checkUnDeletedQueues() throws ReplicationException { undeletedQueueIds = getUnDeletedQueues(); undeletedQueueIds.forEach((replicator, queueIds) -> { queueIds.forEach(queueId -> { ReplicationQueueInfo queueInfo = new ReplicationQueueInfo(queueId); String msg = "Undeleted replication queue for removed peer found: " + String.format("[removedPeerId=%s, replicator=%s, queueId=%s]", queueInfo.getPeerId(), replicator, queueId); errorReporter.reportError(HbckErrorReporter.ERROR_CODE.UNDELETED_REPLICATION_QUEUE, msg); }); }); undeletedHFileRefsPeerIds = getUndeletedHFileRefsPeers(); undeletedHFileRefsPeerIds.stream().map( peerId -> "Undeleted replication hfile-refs queue for removed peer " + peerId + " found") .forEach(msg -> errorReporter .reportError(HbckErrorReporter.ERROR_CODE.UNDELETED_REPLICATION_QUEUE, msg)); } public void fixUnDeletedQueues() throws ReplicationException { for (Map.Entry<ServerName, List<String>> replicatorAndQueueIds : undeletedQueueIds.entrySet()) { ServerName replicator = replicatorAndQueueIds.getKey(); for (String queueId : replicatorAndQueueIds.getValue()) { queueStorage.removeQueue(replicator, queueId); } queueStorage.removeReplicatorIfQueueIsEmpty(replicator); } for (String peerId : undeletedHFileRefsPeerIds) { queueStorage.removePeerFromHFileRefs(peerId); } } }