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From "Mikhail Antonov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14473) Compute region locality in parallel
Date Wed, 23 Sep 2015 19:16:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14473?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14905067#comment-14905067
] 

Mikhail Antonov commented on HBASE-14473:
-----------------------------------------

So hbase.master.balancer.regionLocationCacheTime changed meaning from mins to millisecs? And
the default you use got 8 time bigger?

> Compute region locality in parallel
> -----------------------------------
>
>                 Key: HBASE-14473
>                 URL: https://issues.apache.org/jira/browse/HBASE-14473
>             Project: HBase
>          Issue Type: Bug
>          Components: Balancer
>    Affects Versions: 1.2.0
>            Reporter: Elliott Clark
>            Assignee: Elliott Clark
>             Fix For: 2.0.0, 1.2.0, 1.3.0
>
>         Attachments: HBASE-14473-v1.patch, HBASE-14473.patch
>
>
> Right now on large clusters it's necessary to turn off the locality balance cost as it
takes too long to compute the region locality. This is because it's computed when need in
serial.
> We should compute this in parallel before it's needed.



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