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https://issues.apache.org/jira/browse/HBASE-7340?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13531318#comment-13531318
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Ted Yu commented on HBASE-7340:
-------------------------------
@Nick:
I plan to put AutoCompactionObserver in another issue.
This issue exposes region movement to custom coprocessor logic. However, the
notification is from master side and decision for compaction should be made on
region servers. There is more work so that we can come up with good design for
auto compaction.
If my patch passes review, I plan to modify the subject of this JIRA and open
new one to continue with auto compaction.
> Allow user-specified actions following region movement
> ------------------------------------------------------
>
> Key: HBASE-7340
> URL: https://issues.apache.org/jira/browse/HBASE-7340
> Project: HBase
> Issue Type: Task
> Reporter: Ted Yu
> Assignee: Ted Yu
> Attachments: 7340-v1.txt
>
>
> Sometimes user performs compaction after a region is moved (by balancer). We
> should provide 'hook' which lets user specify what follow-on actions to take
> after region movement.
> See discussion on user mailing list under the thread 'How to know it's time
> for a major compaction?' for background information:
> http://search-hadoop.com/m/BDx4S1jMjF92&subj=How+to+know+it+s+time+for+a+major+compaction+
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