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Date: Fri, 9 Sep 2016 03:15:20 +0000 (UTC)
From: "Sean Busbey (JIRA)" <jira@apache.org>
To: dev@hbase.apache.org
Message-ID: <JIRA.12629752.1359486959000.527889.1473390920772@Atlassian.JIRA>
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Subject: [jira] [Resolved] (HBASE-7708) deprecated call in region_mover.rb
 causing high cpu utilization
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archived-at: Fri, 09 Sep 2016 03:15:23 -0000


     [ https://issues.apache.org/jira/browse/HBASE-7708?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Sean Busbey resolved HBASE-7708.
--------------------------------
    Resolution: Won't Fix

0.92 is long since EOL, closing.

> deprecated call in region_mover.rb causing high cpu utilization
> ---------------------------------------------------------------
>
>                 Key: HBASE-7708
>                 URL: https://issues.apache.org/jira/browse/HBASE-7708
>             Project: HBase
>          Issue Type: Improvement
>          Components: scripts
>            Reporter: Eric Edgeworth
>            Priority: Minor
>
> We noticed high CPU utilization while using region_mover.rb to unload regions.  Consulted with Stack, who suggested changing a line in region_mover.rb from (the deprecated):
> {code}
>   table = getTable(admin.getConfiguration(), r.getTableDesc().getName())
> {code}
> to:
> {code}
>   table = getTable(admin.getConfiguration(), r.getTableName())
> {code}
> In our tests this dropped CPU utilization from ~200% over the course of the unload to ~0.5% after startup, and allowed unload of ~200 regions to complete in ~7 minutes instead of the original ~18 minutes, so the change seems to fix the CPU utilization issue with no untoward side effects we could find.


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