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https://issues.apache.org/jira/browse/HBASE-15381?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15177829#comment-15177829
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stack commented on HBASE-15381:
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bq. In this JIRA, all of these work will be distributed to region servers.
How you see it working [[email protected]]? Thanks. What happens when
compactions get backed up? The master is currently reading all small mob files
and writing out new bigger ones? What do you see when this is going on? A
master that lags burdened down by all the i/o? Thanks.
> 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
>
> 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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