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https://issues.apache.org/jira/browse/HBASE-6956?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13487013#comment-13487013
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Ted Yu commented on HBASE-6956:
-------------------------------
For putTable(), I see this javadoc:
{code}
/**
* This method is not needed anymore, clients should call
* HTableInterface.close() rather than returning the tables to the pool
*
* @param table
* the proxy table user got from pool
* @deprecated
*/
public void putTable(HTableInterface table) throws IOException {
{code}
@Igor, @Shengjie:
Can you tell us whether you followed the above suggestion ?
Thanks
> 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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