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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-2828) HTable unnecessarily coupled with HMaster
Date Wed, 03 Nov 2010 22:50:26 GMT

    [ https://issues.apache.org/jira/browse/HBASE-2828?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12928051#action_12928051
] 

stack commented on HBASE-2828:
------------------------------

done

> HTable unnecessarily coupled with HMaster
> -----------------------------------------
>
>                 Key: HBASE-2828
>                 URL: https://issues.apache.org/jira/browse/HBASE-2828
>             Project: HBase
>          Issue Type: Bug
>          Components: client
>    Affects Versions: 0.90.0
>            Reporter: Nicolas Spiegelberg
>            Assignee: Nicolas Spiegelberg
>             Fix For: 0.90.0
>
>         Attachments: HBASE-2828-0.90.patch, HBASE-2828.a.patch, HBASE-2828.patch
>
>
> HTable constructor calls "getCurrentNrHRS()" to get the region server count for thread
pool creation.  This code calls HBaseAdmin.getClusterStatus() [aka: the HMaster] to get the
server count.  This information can be scraped from counting the ZooKeeper /hbase/rs/--- ZNodes.
 Need to remove unnecessary master queries when ZooKeeper can do the same job.

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