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https://issues.apache.org/jira/browse/HBASE-16169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15365226#comment-15365226
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Elliott Clark commented on HBASE-16169:
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Can you explain a little more about why going to the master is an issue ?
> 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
>
> Attachments: HBASE-16169.master.000.patch
>
>
> 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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