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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6956) Do not return back to HTablePool closed connections
Date Fri, 30 Nov 2012 16:23:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13507413#comment-13507413
] 

stack commented on HBASE-6956:
------------------------------

This seems like an ugly enough oversight on our part.  Any chance of a patch to address it?
 Could we change HConnection Interface to make it easier getting a new one [~amuraru]?  (I
like the name of your class [~iyurinok])
                
> Do not return back to HTablePool closed connections
> ---------------------------------------------------
>
>                 Key: HBASE-6956
>                 URL: https://issues.apache.org/jira/browse/HBASE-6956
>             Project: HBase
>          Issue Type: Bug
>          Components: Client
>    Affects Versions: 0.90.6
>            Reporter: Igor Yurinok
>
> Sometimes we see a lot of Exception about closed connections:
> {code}
>  org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@553fd068
closed
> org.apache.hadoop.hbase.client.ClosedConnectionException: org.apache.hadoop.hbase.client.HConnectionManager$HConnectionImplementation@553fd068
closed
> {code}
> After investigation we assumed that it occurs because closed connection returns back
into HTablePool. 
> For our opinion best solution is  check whether the table is closed in method HTablePool.putTable
and if true don't add it into the queue and release such HTableInterface.
> But unfortunatly right now there are no access to HTable#closed field through HTableInterface

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