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From "Enis Soztutar (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12629) Remove hbase.regionsizecalculator.enable from RegionSizeCalculator
Date Fri, 05 Dec 2014 02:10:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12629?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14234927#comment-14234927
] 

Enis Soztutar commented on HBASE-12629:
---------------------------------------

It depends. I like having safe-guards in the code, even it is not documented. At least if
an issue comes up in production, and if you can identify the issue than you can disable the
feature as a stop gap without having to deploy new code. For this particular feature, the
MR job does not need the region size calculation at all. It is just there as for some human
to better monitor the job. Thus, if it causes extra NN load or something, we can turn it off.


> Remove hbase.regionsizecalculator.enable from RegionSizeCalculator
> ------------------------------------------------------------------
>
>                 Key: HBASE-12629
>                 URL: https://issues.apache.org/jira/browse/HBASE-12629
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Jonathan Hsieh
>            Assignee: Jonathan Hsieh
>             Fix For: 1.0.0, 2.0.0
>
>         Attachments: 0001-HBASE-12629-Remove-hbase.regionsizecalculator.enable.patch
>
>
> The RegionSizeCalculator has a option to disable it.  It is on by default and end-to-end
use with it disabled is not tested or used anywhere except for a simple unit test.  This removes
it.



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