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Date: Wed, 9 Jan 2013 16:46:15 +0000 (UTC)
From: "stack (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
Message-ID: <JIRA.12612338.1350518427406.107186.1357749975011@arcas>
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Subject: [jira] [Resolved] (HBASE-7007) [MTTR] Study assigns to see if we
 can make them faster still
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     [ https://issues.apache.org/jira/browse/HBASE-7007?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

stack resolved HBASE-7007.
--------------------------

    Resolution: Fixed

Resolving as 'fixed' though fixed elsewhere by Jimmy and Nkeywal.  Both did the necessary 'study' and made improvements.  More to be done but enough has been done to close out this fuzzyily-described jira.

Thanks lads.
                
> [MTTR] Study assigns to see if we can make them faster still
> ------------------------------------------------------------
>
>                 Key: HBASE-7007
>                 URL: https://issues.apache.org/jira/browse/HBASE-7007
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Priority: Critical
>             Fix For: 0.96.0
>
>
> Looking at a cluster start, I saw that it took about 25 minutes to assign and open 17k regions.  8 minutes was bulk assigning via zk.  17 minutes was opening the regions.  "HBASE-6640 [0.89-fb] Allow multiple regions to be opened simultaneously" in trunk would help but maybe we can do less work up in zk for instance; e.g. if 3.4.5, we can do bulk ops in zk (or make a bulk assign znode that has many regions instead of one)

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