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Posted to issues@hbase.apache.org by "Thiruvel Thirumoolan (JIRA)" <ji...@apache.org> on 2016/07/01 18:21:11 UTC

[jira] [Commented] (HBASE-16169) RegionSizeCalculator should not depend on master

    [ https://issues.apache.org/jira/browse/HBASE-16169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15359411#comment-15359411 ] 

Thiruvel Thirumoolan commented on HBASE-16169:
----------------------------------------------

Will upload a patch in a couple of days.

> RegionSizeCalculator should not depend on master
> ------------------------------------------------
>
>                 Key: HBASE-16169
>                 URL: https://issues.apache.org/jira/browse/HBASE-16169
>             Project: HBase
>          Issue Type: Sub-task
>          Components: mapreduce, scaling
>            Reporter: Thiruvel Thirumoolan
>            Assignee: Thiruvel Thirumoolan
>             Fix For: 2.0.0, 1.4.0
>
>
> RegionSizeCalculator is needed for better split generation of MR jobs. This requires RegionLoad which can be obtained via ClusterStatus, i.e. accessing Master. We don't want master to be in this path.
> The proposal is to add an API to the RegionServer that gets RegionLoad of all regions hosted on it or those of a table if specified. RegionSizeCalculator can use the latter.



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