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https://issues.apache.org/jira/browse/HBASE-15381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16338934#comment-16338934
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Jean-Marc Spaggiari commented on HBASE-15381:
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[~jmhsieh] [~stack] [~jingcheng...@intel.com] guys any chance to see that done
soon? Just looking at a cluster where 90% of the workload is MOBs and
compaction designed on the master sounds a bit strange. When you add servers or
lost servers and need to get back locality, etc.
> Implement a distributed MOB compaction by procedure
> ---------------------------------------------------
>
> Key: HBASE-15381
> URL: https://issues.apache.org/jira/browse/HBASE-15381
> Project: HBase
> Issue Type: Improvement
> Components: mob
> Reporter: Jingcheng Du
> Assignee: Jingcheng Du
> Priority: Major
> Attachments: HBASE-15381-v2.patch, HBASE-15381-v3.patch,
> HBASE-15381-v4.patch, HBASE-15381-v5.patch, HBASE-15381-v6.patch,
> HBASE-15381.patch, mob distributed compaction design-v2.pdf, mob distributed
> compaction design.pdf
>
>
> In MOB, there is a periodical compaction which runs in HMaster (It can be
> disabled by configuration), some small mob files are merged into bigger ones.
> Now the compaction only runs in HMaster which is not efficient and might
> impact the running of HMaster. In this JIRA, a distributed MOB compaction is
> introduced, it is triggered by HMaster, but all the compaction jobs are
> distributed to HRegionServers.
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