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

Duo Zhang updated HBASE-27160:
------------------------------
    Summary: ClientZKSyncer.deleteDataForClientZkUntilSuccess should break from 
the loop when deletion is succeeded  (was: 
ClientZKSyncer.deleteDataForClientZkUntilSuccess should treat NoNode exception 
specially)

> 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
>            Priority: Major
>
> 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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