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From "Zhihong Ted Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-6471) Performance regression caused by HBASE-4054
Date Sun, 29 Jul 2012 13:50:35 GMT

    [ https://issues.apache.org/jira/browse/HBASE-6471?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13424546#comment-13424546
] 

Zhihong Ted Yu commented on HBASE-6471:
---------------------------------------

+1 on completing HBASE-5728.
                
> Performance regression caused by HBASE-4054
> -------------------------------------------
>
>                 Key: HBASE-6471
>                 URL: https://issues.apache.org/jira/browse/HBASE-6471
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.92.0
>            Reporter: Lars George
>
> The patch in HBASE-4054 switches the PooledHTable to extend HTable as opposed to implement
HTableInterface.
> Since HTable does not have an empty constructor, the patch added a call to the super()
constructor, which though does trigger the ZooKeeper and META scan, causing a considerable
delay. 
> With multiple threads using the pool in parallel, the first thread is holding up all
the subsequent ones, in effect it negates the whole reason we have a HTable pool.
> We should complete HBASE-5728, or alternatively add a protected, empty constructor the
HTable. I am +1 for the former.

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