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https://issues.apache.org/jira/browse/HBASE-4857?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Ted Yu updated HBASE-4857:
--------------------------
Status: Patch Available (was: Open)
> Recursive loop on KeeperException in
> AuthenticationTokenSecretManager/ZKLeaderManager
> -------------------------------------------------------------------------------------
>
> Key: HBASE-4857
> URL: https://issues.apache.org/jira/browse/HBASE-4857
> Project: HBase
> Issue Type: Bug
> Components: security
> Affects Versions: 0.92.0, 0.94.0
> Reporter: Gary Helmling
> Fix For: 0.92.0
>
> Attachments: HBASE-4857.patch
>
>
> Looking through stack traces for {{TestMasterFailover}}, I see a case where
> the leader {{AuthenticationTokenSecretManager}} can get into a recursive loop
> when a {{KeeperException}} is encountered:
> {noformat}
> Thread-1-EventThread" daemon prio=10 tid=0x00007f9fb47b2800 nid=0x77f6
> waiting on condition [0x00007f9fab376000]
> java.lang.Thread.State: TIMED_WAITING (sleeping)
> at java.lang.Thread.sleep(Native Method)
> at java.lang.Thread.sleep(Thread.java:302)
> at java.util.concurrent.TimeUnit.sleep(TimeUnit.java:328)
> at
> org.apache.hadoop.hbase.util.RetryCounter.sleepUntilNextRetry(RetryCounter.java:55)
> at
> org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.exists(RecoverableZooKeeper.java:206)
> at
> org.apache.hadoop.hbase.zookeeper.ZKUtil.createAndFailSilent(ZKUtil.java:891)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.createBaseZNodes(ZooKeeperWatcher.java:161)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.<init>(ZooKeeperWatcher.java:154)
> at
> org.apache.hadoop.hbase.master.HMaster.tryRecoveringExpiredZKSession(HMaster.java:1397)
> at org.apache.hadoop.hbase.master.HMaster.abortNow(HMaster.java:1435)
> at org.apache.hadoop.hbase.master.HMaster.abort(HMaster.java:1374)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.abort(ZooKeeperWatcher.java:450)
> at
> org.apache.hadoop.hbase.zookeeper.ZKLeaderManager.stepDownAsLeader(ZKLeaderManager.java:166)
> at
> org.apache.hadoop.hbase.security.token.AuthenticationTokenSecretManager$LeaderElector.stop(AuthenticationTokenSecretManager.java:293)
> at
> org.apache.hadoop.hbase.zookeeper.ZKLeaderManager.stepDownAsLeader(ZKLeaderManager.java:167)
> at
> org.apache.hadoop.hbase.security.token.AuthenticationTokenSecretManager$LeaderElector.stop(AuthenticationTokenSecretManager.java:293)
> at
> org.apache.hadoop.hbase.zookeeper.ZKLeaderManager.stepDownAsLeader(ZKLeaderManager.java:167)
> at
> org.apache.hadoop.hbase.security.token.AuthenticationTokenSecretManager$LeaderElector.stop(AuthenticationTokenSecretManager.java:293)
> at
> org.apache.hadoop.hbase.zookeeper.ZKLeaderManager.handleLeaderChange(ZKLeaderManager.java:96)
> at
> org.apache.hadoop.hbase.zookeeper.ZKLeaderManager.nodeDeleted(ZKLeaderManager.java:78)
> at
> org.apache.hadoop.hbase.zookeeper.ZooKeeperWatcher.process(ZooKeeperWatcher.java:286)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:521)
> at
> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:497)
> {noformat}
> The {{KeeperException}} causes {{ZKLeaderManager}} to call
> {{AuthenticationTokenSecretManager$LeaderElector.stop()}}, which calls
> {{ZKLeaderManager.stepDownAsLeader()}}, which will encounter another
> {{KeeperException}}, and so on...
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