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https://issues.apache.org/jira/browse/HBASE-22601?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16912843#comment-16912843
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Hudson commented on HBASE-22601:
--------------------------------
Results for branch master
[build #1351 on
builds.a.o|https://builds.apache.org/job/HBase%20Nightly/job/master/1351/]: (x)
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> Misconfigured addition of peers leads to cluster shutdown.
> ----------------------------------------------------------
>
> Key: HBASE-22601
> URL: https://issues.apache.org/jira/browse/HBASE-22601
> Project: HBase
> Issue Type: Bug
> Affects Versions: 1.3.2
> Reporter: Rushabh S Shah
> Assignee: Rushabh S Shah
> Priority: Major
> Fix For: 3.0.0, 2.3.0, 2.2.1, 2.1.6
>
>
> Recently we added a peer to a production cluster which were in different
> kerberos realm.
> *Steps to reproduce:*
> 1. Add a misconfigured peer which is in different kerberos realm.
> 2. Remove that peer.
> 3. All region servers will start to crash.
> *RCA*
> Enabled trace logging on one Region server for a short amount of time.
> After adding peer, saw the following log lines.
> {noformat}
> 2019-06-18 22:19:20,949 INFO [main-EventThread]
> replication.ReplicationTrackerZKImpl - /hbase/replication/peers znode
> expired, triggering peerListChanged event
> 2019-06-18 22:19:20,992 INFO [main-EventThread]
> replication.ReplicationPeersZKImpl - Added new peer
> cluster=<dev-cluster-zookeeper>:/hbase
> 2019-06-18 22:19:21,113 INFO [main-EventThread]
> zookeeper.RecoverableZooKeeper - Process identifier=hconnection-0x794a56d6
> connecting to ZooKeeper ensemble=<dev-cluster-zookeeper>
> 2019-06-18 22:20:01,280 WARN [main-EventThread] zookeeper.ZKUtil -
> hconnection-0x794a56d6-0x16b56265fbebb1b, quorum=<dev-cluster-zookeeper>,
> baseZNode=/hbase Unable to set watcher on znode (/hbase/hbaseid)
> org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode =
> AuthFailed for /hbase/hbaseid
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:123)
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1102)
> at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:220)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:421)
> at
> org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
> at
> org.apache.hadoop.hbase.client.ZooKeeperRegistry.getClusterId(ZooKeeperRegistry.java:105)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.retrieveClusterId(ConnectionManager.java:922)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:706)
> at
> org.apache.hadoop.hbase.client.ConnectionManager$HConnectionImplementation.<init>(ConnectionManager.java:638)
> at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
> at
> sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
> at
> org.apache.hadoop.hbase.client.ConnectionFactory.createConnection(ConnectionFactory.java:238)
> at
> org.apache.hadoop.hbase.client.ConnectionManager.createConnection(ConnectionManager.java:432)
> at
> org.apache.hadoop.hbase.client.ConnectionManager.createConnectionInternal(ConnectionManager.java:341)
> at
> org.apache.hadoop.hbase.client.HConnectionManager.createConnection(HConnectionManager.java:144)
> at
> org.apache.hadoop.hbase.replication.regionserver.HBaseInterClusterReplicationEndpoint.init(HBaseInterClusterReplicationEndpoint.java:135)
> at
> com.salesforce.hbase.replication.TenantReplicationEndpoint.init(TenantReplicationEndpoint.java:30)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.getReplicationSource(ReplicationSourceManager.java:517)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.addSource(ReplicationSourceManager.java:273)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSourceManager.peerListChanged(ReplicationSourceManager.java:635)
> at
> org.apache.hadoop.hbase.replication.ReplicationTrackerZKImpl$PeersWatcher.nodeChildrenChanged(ReplicationTrackerZKImpl.java:192)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:643)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:544)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:519)
> 2019-06-18 22:20:42,999 WARN [Source,<dev-cluster>] zookeeper.ZKUtil -
> connection to cluster: <dev-cluster>-0x26b56265fe7b5cd,
> quorum=<dev-cluster-zookeeper>, baseZNode=/hbase Unable to set watcher on
> znode (/hbase/hbaseid)
> org.apache.zookeeper.KeeperException$AuthFailedException: KeeperErrorCode =
> AuthFailed for /hbase/hbaseid
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:123)
> at
> org.apache.zookeeper.KeeperException.create(KeeperException.java:51)
> at org.apache.zookeeper.ZooKeeper.exists(ZooKeeper.java:1102)
> at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:220)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.checkExists(ZKUtil.java:421)
> at
> org.apache.hadoop.hbase.zookeeper.ZKClusterId.readClusterIdZNode(ZKClusterId.java:65)
> at
> org.apache.hadoop.hbase.zookeeper.ZKClusterId.getUUIDForCluster(ZKClusterId.java:96)
> at
> org.apache.hadoop.hbase.replication.HBaseReplicationEndpoint.getPeerUUID(HBaseReplicationEndpoint.java:104)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:304)
> 2019-06-18 22:20:43,002 TRACE [Source,<dev-cluster>]
> regionserver.ReplicationSource - Cannot contact the peer's zk ensemble,
> sleeping 1000 times 1
> <same stack trace as before>
> 2019-06-18 22:20:44,008 TRACE [Source,<dev-cluster>]
> regionserver.ReplicationSource - Cannot contact the peer's zk ensemble,
> sleeping 1000 times 2
> <same stack trace as before>
> {noformat}
> This goes on and on until we removed the peer.
> After removing the peer,
> {noformat}
> 2019-06-18 22:21:20,731 INFO [main-EventThread]
> replication.ReplicationTrackerZKImpl - /hbase/replication/peers/<dev-cluster>
> znode expired, triggering peerRemoved event
> 2019-06-18 22:21:20,731 INFO [main-EventThread]
> regionserver.ReplicationSourceManager - Closing the following queue
> <dev-cluster>, currently have 2 and another 0 that were recovered
> 2019-06-18 22:21:20,733 INFO [main-EventThread]
> regionserver.ReplicationSourceManager - Number of deleted recovered sources
> for <dev-cluster>: 0
> 2019-06-18 22:21:20,734 INFO [main-EventThread]
> regionserver.ReplicationSource - Closing source <dev-cluster> because:
> Replication stream was removed by a user
> 2019-06-18 22:21:20,734 INFO [main-EventThread]
> replication.TenantReplicationEndpoint - Stopping endpoint
> 2019-06-18 22:21:20,736 INFO [main-EventThread]
> client.ConnectionManager$HConnectionImplementation - Closing zookeeper
> sessionid=0x16b56265fbebb1b
> 2019-06-18 22:21:20,736 DEBUG [main-EventThread] ipc.RpcClientImpl - Stopping
> rpc client
> 2019-06-18 22:21:20,738 INFO [main-EventThread]
> regionserver.ReplicationSourceManager - Done with the queue <dev-cluster>
> 2019-06-18 22:21:20,744 DEBUG [main-EventThread]
> replication.ReplicationQueuesZKImpl - Peer
> /hbase/replication/hfile-refs/<dev-cluster> not found in hfile reference
> queue.
> 2019-06-18 22:21:28,066 INFO [Source,<dev-cluster>]
> regionserver.ReplicationSource - Replicating
> d12a5eb3-16bd-4910-91ed-41e0e7990007 -> null
> 2019-06-18 22:21:28,067 DEBUG [Source,<dev-cluster>]
> regionserver.ReplicationSource - Starting up worker for wal group
> <rs-serner-name>%2C60020%2C1560896050398
> 2019-06-18 22:21:28,069 ERROR [050398,<dev-cluster>]
> regionserver.ReplicationSource - Unexpected exception in
> ReplicationSourceWorkerThread, currentPath=null
> java.lang.IllegalArgumentException: Peer with id= <dev-cluster> is not
> connected
> at
> org.apache.hadoop.hbase.replication.ReplicationPeersZKImpl.getStatusOfPeer(ReplicationPeersZKImpl.java:217)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.isPeerEnabled(ReplicationSource.java:363)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource$ReplicationSourceWorkerThread.run(ReplicationSource.java:549)
> 2019-06-18 22:21:28,070 INFO [050398,<dev-cluster>]
> regionserver.HRegionServer - STOPPED: Unexpected exception in
> ReplicationSourceWorkerThread
> 2019-06-18 22:21:28,071 INFO [/10.231.90.212:60020]
> regionserver.SplitLogWorker - Sending interrupt to stop the worker thread
> 2019-06-18 22:21:28,073 INFO [/10.231.90.212:60020]
> regionserver.HRegionServer - Stopping infoServer
> 2019-06-18 22:21:28,075 INFO [as-dnds4-3-prd:60020]
> regionserver.SplitLogWorker - SplitLogWorker interrupted. Exiting.
> 2019-06-18 22:21:28,076 INFO [as-dnds4-3-prd:60020]
> regionserver.SplitLogWorker - SplitLogWorker
> <rs-server-name>,60020,1560896050398 exiting
> 2019-06-18 22:21:28,181 INFO [/10.231.90.212:60020]
> regionserver.HeapMemoryManager - Stopping HeapMemoryTuner chore.
> 2019-06-18 22:21:28,181 INFO [/10.231.90.212:60020]
> flush.RegionServerFlushTableProcedureManager - Stopping region server flush
> procedure manager gracefully.
> {noformat}
> Also verified from jstacks I captured between addition of peer and removal of
> peer, the Replication source thread was sleeping waiting to connect to peer.
> {noformat}
> "main-EventThread.replicationSource,<dev-cluster>" #1923 daemon prio=5
> os_prio=0 tid=0x00007f1ad18f4800 nid=0x25a47
> waiting on condition [0x00007f1220314000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.sleepForRetries(ReplicationSource.java:349)
> at
> org.apache.hadoop.hbase.replication.regionserver.ReplicationSource.run(ReplicationSource.java:306)
> {noformat}
> According to me, the bug lies here:
> {code:java|title=ReplicationSource.java|borderStyle=solid}
> // Some comments here
> public void run() {
> {
> ....
> ....
> while (this.isSourceActive() && this.peerClusterId == null) {
> this.peerClusterId = replicationEndpoint.getPeerUUID();
> if (this.isSourceActive() && this.peerClusterId == null) {
> if (sleepForRetries("Cannot contact the peer's zk ensemble",
> sleepMultiplier)) {
> sleepMultiplier++;
> }
> }
> }
> !-- There is a bug here. We should check that peerClusterId is not null. If
> null, then terminate the thread. -->
> // In rare case, zookeeper setting may be messed up. That leads to the
> incorrect
> // peerClusterId value, which is the same as the source clusterId
> if (clusterId.equals(peerClusterId) &&
> !replicationEndpoint.canReplicateToSameCluster()) {
> this.terminate("ClusterId " + clusterId + " is replicating to itself:
> peerClusterId "
> + peerClusterId + " which is not allowed by ReplicationEndpoint:"
> + replicationEndpoint.getClass().getName(), null, false);
> this.manager.closeQueue(this);
> return;
> }
> ....
> ....
> }
> {code}
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