Anoop Sam John commented on HBASE-15381:

Great. This is a long waited improvement. Hope we can get this in soon. :-)

> 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: huaxiang sun
>            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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