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Date: Thu, 19 May 2011 21:37:47 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
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Subject: [jira] [Updated] (HBASE-3861) MiniZooKeeperCluster.startup() should
 refer to hbase.zookeeper.property.maxClientCnxns
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     [ https://issues.apache.org/jira/browse/HBASE-3861?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack updated HBASE-3861:
-------------------------

    Fix Version/s:     (was: 0.90.4)

Moving this to 0.92.0.  It was committed for 0.90.3.

> MiniZooKeeperCluster.startup() should refer to hbase.zookeeper.property.maxClientCnxns
> --------------------------------------------------------------------------------------
>
>                 Key: HBASE-3861
>                 URL: https://issues.apache.org/jira/browse/HBASE-3861
>             Project: HBase
>          Issue Type: Improvement
>    Affects Versions: 0.90.3
>            Reporter: Eugene Koontz
>            Assignee: Eugene Koontz
>             Fix For: 0.92.0
>
>         Attachments: HBASE-3861.patch, HBASE-3861.patch
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> Currently the number of the client connections is hard-wired to 1000:
> {{{
>         standaloneServerFactory = new NIOServerCnxnFactory();
>         standaloneServerFactory.configure(new InetSocketAddress(clientPort),1000);
>       } catch (BindException e) {
>  
> }}}
> This should be set according to the test environment's hbase configuration. The property in 
> question is : hbase.zookeeper.property.maxClientCnxns.
> Currently some tests such as org.apache.hadoop.hbase.client.TestHCM fail because the number of connections used by the HBase client exceeds 1000. 
> Recently MAX_CACHED_HBASE_INSTANCES increased from 31 to 2000 on 0.90 branch:
> http://svn.apache.org/viewvc/hbase/branches/0.90/src/main/java/org/apache/hadoop/hbase/client/HConnectionManager.java?p2=%2Fhbase%2Fbranches%2F0.90%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fhadoop%2Fhbase%2Fclient%2FHConnectionManager.java&p1=%2Fhbase%2Fbranches%2F0.90%2Fsrc%2Fmain%2Fjava%2Forg%2Fapache%2Fhadoop%2Fhbase%2Fclient%2FHConnectionManager.java&r1=1096818&r2=1096817&view=diff&pathrev=1096818
> and correspondingly the hbase config on the Zookeeper server-side also increased in hbase-default.xml:
> http://svn.apache.org/viewvc/hbase/branches/0.90/src/main/resources/hbase-default.xml?p2=%2Fhbase%2Fbranches%2F0.90%2Fsrc%2Fmain%2Fresources%2Fhbase-default.xml&p1=%2Fhbase%2Fbranches%2F0.90%2Fsrc%2Fmain%2Fresources%2Fhbase-default.xml&r1=1091594&r2=1091593&view=diff&pathrev=1091594
> So if MiniZKCluster looks at this setting, the test won't have this failure.

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