From f9531c38297b9bc05c8f36cc6fef63a114dedf43 Mon Sep 17 00:00:00 2001 From: zhangduo Date: Wed, 29 Jun 2016 18:23:37 +0800 Subject: [PATCH] HBASE-16135 PeerClusterZnode under rs of removed peer may never be deleted --- .../hbase/replication/ReplicationQueuesZKImpl.java | 8 ++- .../regionserver/ReplicationSourceManager.java | 71 ++++++++++++++-------- .../regionserver/TestReplicationSourceManager.java | 45 ++++++++++++-- 3 files changed, 89 insertions(+), 35 deletions(-) diff --git a/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationQueuesZKImpl.java b/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationQueuesZKImpl.java index 26ca6ba..5c6fe4e 100644 --- a/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationQueuesZKImpl.java +++ b/hbase-client/src/main/java/org/apache/hadoop/hbase/replication/ReplicationQueuesZKImpl.java @@ -302,9 +302,11 @@ public class ReplicationQueuesZKImpl extends ReplicationStateZKBase implements R for (String peerId : peerIdsToProcess) { ReplicationQueueInfo replicationQueueInfo = new ReplicationQueueInfo(peerId); if (!peerExists(replicationQueueInfo.getPeerId())) { - LOG.warn("Peer " + peerId + " didn't exist, skipping the replay"); - // Protection against moving orphaned queues - continue; + // the orphaned queues must be moved, otherwise the delete op of dead rs will fail, + // this will cause the whole multi op fail. + // NodeFailoverWorker will skip the orphaned queues. + LOG.warn("Peer " + peerId + + " didn't exist, will move its queue to avoid the failure of multi op"); } String newPeerId = peerId + "-" + znode; String newPeerZnode = ZKUtil.joinZNode(this.myQueuesZnode, newPeerId); diff --git a/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.java b/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.java index a8cffba..8d0d29f 100644 --- a/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.java +++ b/hbase-server/src/main/java/org/apache/hadoop/hbase/replication/regionserver/ReplicationSourceManager.java @@ -19,6 +19,9 @@ package org.apache.hadoop.hbase.replication.regionserver; +import com.google.common.annotations.VisibleForTesting; +import com.google.common.util.concurrent.ThreadFactoryBuilder; + import java.io.IOException; import java.util.ArrayList; import java.util.Collections; @@ -61,8 +64,6 @@ import org.apache.hadoop.hbase.replication.ReplicationQueues; import org.apache.hadoop.hbase.replication.ReplicationTracker; import org.apache.hadoop.hbase.wal.DefaultWALProvider; -import com.google.common.util.concurrent.ThreadFactoryBuilder; - /** * This class is responsible to manage all the replication * sources. There are two classes of sources: @@ -345,6 +346,11 @@ public class ReplicationSourceManager implements ReplicationListener { return this.oldsources; } + @VisibleForTesting + List getAllQueues() { + return replicationQueues.getAllQueues(); + } + void preLogRoll(Path newLog) throws IOException { recordLog(newLog); String logName = newLog.getName(); @@ -529,22 +535,26 @@ public class ReplicationSourceManager implements ReplicationListener { + sources.size() + " and another " + oldsources.size() + " that were recovered"); String terminateMessage = "Replication stream was removed by a user"; - List srcToRemove = new ArrayList(); List oldSourcesToDelete = new ArrayList(); - // First close all the recovered sources for this peer - for (ReplicationSourceInterface src : oldsources) { - if (id.equals(src.getPeerClusterId())) { - oldSourcesToDelete.add(src); + // synchronized on oldsources to avoid adding recovered source for the to-be-removed peer + // see NodeFailoverWorker.run + synchronized (oldsources) { + // First close all the recovered sources for this peer + for (ReplicationSourceInterface src : oldsources) { + if (id.equals(src.getPeerClusterId())) { + oldSourcesToDelete.add(src); + } } } for (ReplicationSourceInterface src : oldSourcesToDelete) { src.terminate(terminateMessage); - closeRecoveredQueue((src)); + closeRecoveredQueue(src); } LOG.info("Number of deleted recovered sources for " + id + ": " + oldSourcesToDelete.size()); // Now look for the one on this cluster + List srcToRemove = new ArrayList(); synchronized (this.replicationPeers) {// synchronize on replicationPeers to avoid adding source // for the to-be-removed peer for (ReplicationSourceInterface src : this.sources) { @@ -552,16 +562,16 @@ public class ReplicationSourceManager implements ReplicationListener { srcToRemove.add(src); } } - if (srcToRemove.size() == 0) { - LOG.error("The queue we wanted to close is missing " + id); - return; - } - for (ReplicationSourceInterface toRemove : srcToRemove) { - toRemove.terminate(terminateMessage); - this.sources.remove(toRemove); - } - deleteSource(id, true); } + if (srcToRemove.size() == 0) { + LOG.error("The queue we wanted to close is missing " + id); + return; + } + for (ReplicationSourceInterface toRemove : srcToRemove) { + toRemove.terminate(terminateMessage); + this.sources.remove(toRemove); + } + deleteSource(id, true); } @Override @@ -600,9 +610,12 @@ public class ReplicationSourceManager implements ReplicationListener { private final UUID clusterId; /** - * * @param rsZnode */ + public NodeFailoverWorker(String rsZnode) { + this(rsZnode, replicationQueues, replicationPeers, ReplicationSourceManager.this.clusterId); + } + public NodeFailoverWorker(String rsZnode, final ReplicationQueues replicationQueues, final ReplicationPeers replicationPeers, final UUID clusterId) { super("Failover-for-"+rsZnode); @@ -658,6 +671,7 @@ public class ReplicationSourceManager implements ReplicationListener { } if (peer == null || peerConfig == null) { LOG.warn("Skipping failover for peer:" + actualPeerId + " of node" + rsZnode); + replicationQueues.removeQueue(peerId); continue; } // track sources in walsByIdRecoveredQueues @@ -677,15 +691,20 @@ public class ReplicationSourceManager implements ReplicationListener { ReplicationSourceInterface src = getReplicationSource(conf, fs, ReplicationSourceManager.this, this.rq, this.rp, server, peerId, this.clusterId, peerConfig, peer); - if (!this.rp.getPeerIds().contains((src.getPeerClusterId()))) { - src.terminate("Recovered queue doesn't belong to any current peer"); - break; - } - oldsources.add(src); - for (String wal : walsSet) { - src.enqueueLog(new Path(oldLogDir, wal)); + // synchronized on oldsources to avoid adding recovered source for the to-be-removed peer + // see removePeer + synchronized (oldsources) { + if (!this.rp.getPeerIds().contains(src.getPeerClusterId())) { + src.terminate("Recovered queue doesn't belong to any current peer"); + closeRecoveredQueue(src); + continue; + } + oldsources.add(src); + for (String wal : walsSet) { + src.enqueueLog(new Path(oldLogDir, wal)); + } + src.startup(); } - src.startup(); } catch (IOException e) { // TODO manage it LOG.error("Failed creating a source", e); diff --git a/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java index b78896a..082ef5d 100644 --- a/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java +++ b/hbase-server/src/test/java/org/apache/hadoop/hbase/replication/regionserver/TestReplicationSourceManager.java @@ -21,6 +21,9 @@ package org.apache.hadoop.hbase.replication.regionserver; import static org.junit.Assert.assertEquals; import static org.junit.Assert.assertTrue; +import com.google.common.collect.Sets; + +import java.io.IOException; import java.net.URLEncoder; import java.util.ArrayList; import java.util.Collection; @@ -76,10 +79,10 @@ import org.junit.After; import org.junit.AfterClass; import org.junit.Before; import org.junit.BeforeClass; +import org.junit.Rule; import org.junit.Test; import org.junit.experimental.categories.Category; - -import com.google.common.collect.Sets; +import org.junit.rules.TestName; @Category(MediumTests.class) public class TestReplicationSourceManager { @@ -176,15 +179,24 @@ public class TestReplicationSourceManager { utility.shutdownMiniCluster(); } - @Before - public void setUp() throws Exception { + @Rule + public TestName testName = new TestName(); + + private void cleanLogDir() throws IOException { fs.delete(logDir, true); fs.delete(oldLogDir, true); } + @Before + public void setUp() throws Exception { + LOG.info("Start " + testName.getMethodName()); + cleanLogDir(); + } + @After public void tearDown() throws Exception { - setUp(); + LOG.info("End " + testName.getMethodName()); + cleanLogDir(); } @Test @@ -258,7 +270,6 @@ public class TestReplicationSourceManager { @Test public void testClaimQueues() throws Exception { - LOG.debug("testNodeFailoverWorkerCopyQueuesFromRSUsingMulti"); conf.setBoolean(HConstants.ZOOKEEPER_USEMULTI, true); final Server server = new DummyServer("hostname0.example.org"); ReplicationQueues rq = @@ -415,6 +426,28 @@ public class TestReplicationSourceManager { s0.abort("", null); } + @Test + public void testCleanupUnknownPeerZNode() throws Exception { + final Server server = new DummyServer("hostname1.example.org"); + ReplicationQueues rq = + ReplicationFactory.getReplicationQueues(server.getZooKeeper(), server.getConfiguration(), + server); + rq.init(server.getServerName().toString()); + // populate some znodes in the peer znode + // add log to an unknown peer + String group = "testgroup"; + rq.addLog("2", group + ".log1"); + rq.addLog("2", group + "log2"); + + NodeFailoverWorker w1 = manager.new NodeFailoverWorker(server.getServerName().getServerName()); + w1.run(); + + // The log of the unknown peer should be removed from zk + for (String peer : manager.getAllQueues()) { + assertTrue(peer.startsWith("1")); + } + } + static class DummyNodeFailoverWorker extends Thread { private SortedMap> logZnodesMap; Server server; -- 1.9.1