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https://issues.apache.org/jira/browse/HBASE-938?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12646940#action_12646940
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Billy Pearson commented on HBASE-938:
-------------------------------------

I like that idea sounds good to me. 
If we can write it in to the meta data then if only one file there and major 
compaction do as you said above
that would make the major compaction much smarter and save on cpu and bandwidth.

> major compaction period is not checked periodically
> ---------------------------------------------------
>
>                 Key: HBASE-938
>                 URL: https://issues.apache.org/jira/browse/HBASE-938
>             Project: Hadoop HBase
>          Issue Type: Bug
>          Components: regionserver
>    Affects Versions: 0.18.0, 0.18.1
>         Environment: HBase 0.18 branch (should be RC1) + Hadoop 0.18 branch
>            Reporter: Rong-En Fan
>            Assignee: stack
>            Priority: Critical
>             Fix For: 0.19.0
>
>         Attachments: 938.patch, major.patch
>
>
> The major compaction period, hbase.hregion.majorcompaction, is not checked 
> periodically. Currently, we only request major compaction when the region is 
> open or split at which point we check whether the major compaction period is 
> due.

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