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https://issues.apache.org/jira/browse/HBASE-5466?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13237153#comment-13237153
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Shaneal Manek commented on HBASE-5466:
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Hi, I'm running into this problem on a 0.90 cluster.
The patch seems to apply cleanly to 0.90 branch - could a committer add it
there too?
> Opening a table also opens the metatable and never closes it.
> -------------------------------------------------------------
>
> Key: HBASE-5466
> URL: https://issues.apache.org/jira/browse/HBASE-5466
> Project: HBase
> Issue Type: Bug
> Components: client
> Affects Versions: 0.90.5, 0.92.0
> Reporter: Ashley Taylor
> Assignee: Ashley Taylor
> Fix For: 0.92.1
>
> Attachments: MetaScanner_HBASE_5466(2).patch,
> MetaScanner_HBASE_5466(3).patch, MetaScanner_HBASE_5466.patch
>
>
> Having upgraded to CDH3U3 version of hbase we found we had a zookeeper
> connection leak, tracking it down we found that closing the connection will
> only close the zookeeper connection if all calls to get the connection have
> been closed, there is incCount and decCount in the HConnection class,
> When a table is opened it makes a call to the metascanner class which opens a
> connection to the meta table, this table never gets closed.
> This caused the count in the HConnection class to never return to zero
> meaning that the zookeeper connection will not close when we close all the
> tables or calling
> HConnectionManager.deleteConnection(config, true);
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