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From "Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-9927) ReplicationLogCleaner#stop() calls HConnectionManager#deleteConnection() unnecessarily
Date Fri, 15 Nov 2013 23:53:21 GMT

     [ https://issues.apache.org/jira/browse/HBASE-9927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ted Yu updated HBASE-9927:
--------------------------

    Status: Patch Available  (was: Open)

> ReplicationLogCleaner#stop() calls HConnectionManager#deleteConnection() unnecessarily
> --------------------------------------------------------------------------------------
>
>                 Key: HBASE-9927
>                 URL: https://issues.apache.org/jira/browse/HBASE-9927
>             Project: HBase
>          Issue Type: Task
>            Reporter: Ted Yu
>            Assignee: Ted Yu
>            Priority: Minor
>             Fix For: 0.94.15
>
>         Attachments: 9927.txt
>
>
> When inspecting log, I found the following:
> {code}
> 2013-11-08 18:23:48,472 ERROR [M:0;kiyo:42380.oldLogCleaner] client.HConnectionManager(468):
Connection not found in the list, can't delete it (connection key=HConnectionKey{properties={hbase.rpc.timeout=60000,
hbase.zookeeper.property.clientPort=59832, hbase.client.pause=100, zookeeper.znode.parent=/hbase,
hbase.client.retries.number=350, hbase.zookeeper.quorum=localhost}, username='zy'}). May be
the key was modified?
> java.lang.Exception
>         at org.apache.hadoop.hbase.client.HConnectionManager.deleteConnection(HConnectionManager.java:468)
>         at org.apache.hadoop.hbase.client.HConnectionManager.deleteConnection(HConnectionManager.java:404)
>         at org.apache.hadoop.hbase.replication.master.ReplicationLogCleaner.stop(ReplicationLogCleaner.java:141)
>         at org.apache.hadoop.hbase.master.cleaner.CleanerChore.cleanup(CleanerChore.java:276)
> {code}
> The call to HConnectionManager#deleteConnection() is not needed.
> Here is related code which has a comment for this effect:
> {code}
>     // Not sure why we're deleting a connection that we never acquired or used
>     HConnectionManager.deleteConnection(this.getConf());
> {code}



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