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https://issues.apache.org/jira/browse/HBASE-16169?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15670026#comment-15670026
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Thiruvel Thirumoolan commented on HBASE-16169:
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Thanks [~stack], the recent precommit builds are much better.
> Make RegionSizeCalculator scalable
> ----------------------------------
>
> 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,
> HBASE-16169.master.001.patch, HBASE-16169.master.002.patch,
> HBASE-16169.master.003.patch, HBASE-16169.master.004.patch,
> HBASE-16169.master.005.patch, HBASE-16169.master.006.patch,
> HBASE-16169.master.007.patch, HBASE-16169.master.007.patch,
> HBASE-16169.master.008.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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