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Posted to dev@hbase.apache.org by "Duo Zhang (Jira)" <ji...@apache.org> on 2022/06/26 07:34:00 UTC

[jira] [Resolved] (HBASE-27160) ClientZKSyncer.deleteDataForClientZkUntilSuccess should break from the loop when deletion is succeeded

     [ https://issues.apache.org/jira/browse/HBASE-27160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Duo Zhang resolved HBASE-27160.
-------------------------------
    Fix Version/s: 2.5.0
                   3.0.0-alpha-4
                   2.4.14
     Hadoop Flags: Reviewed
       Resolution: Fixed

Pushed to branch-2.4+.

Thanks [~bbeaudreault] for reviewing!

> ClientZKSyncer.deleteDataForClientZkUntilSuccess should break from the loop when deletion is succeeded
> ------------------------------------------------------------------------------------------------------
>
>                 Key: HBASE-27160
>                 URL: https://issues.apache.org/jira/browse/HBASE-27160
>             Project: HBase
>          Issue Type: Bug
>          Components: Client, Zookeeper
>            Reporter: Duo Zhang
>            Assignee: Duo Zhang
>            Priority: Major
>             Fix For: 2.5.0, 3.0.0-alpha-4, 2.4.14
>
>
> https://nightlies.apache.org/hbase/HBase-Flaky-Tests/master/3745/hbase-server/target/surefire-reports/org.apache.hadoop.hbase.client.TestSeparateClientZKCluster-output.txt
> {noformat}
> 2022-06-25T04:53:00,316 DEBUG [ClientZKUpdater-/hbase/meta-region-server-1] zksyncer.ClientZKSyncer(200): Failed to delete node from client ZK, will retry later
> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = NoNode for /hbase/meta-region-server-1
> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:118) ~[zookeeper-3.5.7.jar:3.5.7]
> 	at org.apache.zookeeper.KeeperException.create(KeeperException.java:54) ~[zookeeper-3.5.7.jar:3.5.7]
> 	at org.apache.zookeeper.ZooKeeper.delete(ZooKeeper.java:1793) ~[zookeeper-3.5.7.jar:3.5.7]
> 	at org.apache.hadoop.hbase.zookeeper.RecoverableZooKeeper.delete(RecoverableZooKeeper.java:210) ~[hbase-zookeeper-3.0.0-alpha-3.jar:3.0.0-alpha-3]
> 	at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNode(ZKUtil.java:851) ~[hbase-zookeeper-3.0.0-alpha-3.jar:3.0.0-alpha-3]
> 	at org.apache.hadoop.hbase.zookeeper.ZKUtil.deleteNode(ZKUtil.java:843) ~[hbase-zookeeper-3.0.0-alpha-3.jar:3.0.0-alpha-3]
> 	at org.apache.hadoop.hbase.master.zksyncer.ClientZKSyncer.deleteDataForClientZkUntilSuccess(ClientZKSyncer.java:198) ~[classes/:?]
> 	at org.apache.hadoop.hbase.master.zksyncer.ClientZKSyncer.access$400(ClientZKSyncer.java:45) ~[classes/:?]
> 	at org.apache.hadoop.hbase.master.zksyncer.ClientZKSyncer$ClientZkUpdater.run(ClientZKSyncer.java:318) ~[classes/:?]
> {noformat}
> Not sure if this is the root cause of the flakiness but at least it messes up the output, let's fix it first.



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