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https://issues.apache.org/jira/browse/HBASE-12859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14290795#comment-14290795
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James Taylor commented on HBASE-12859:
--------------------------------------

Any API is fine by me, [~lhofhansl]. I think I'd call it from a RegionObserver 
coprocessor - maybe the post compaction one. See my comment on PHOENIX-1590 for 
more context.

> Major compaction completion tracker
> -----------------------------------
>
>                 Key: HBASE-12859
>                 URL: https://issues.apache.org/jira/browse/HBASE-12859
>             Project: HBase
>          Issue Type: Brainstorming
>            Reporter: Lars Hofhansl
>         Attachments: 12859-v1.txt, 12859-v2.txt, 12859-v3.txt, 
> 12859-wip-UNFINISHED.txt
>
>
> In various scenarios it is helpful to know a guaranteed timestamp up to which 
> all data in a table was major compacted.
> We can do that keeping a major compaction timestamp in META.
> A client then can iterate all region of a table and find a definite 
> timestamp, which is the oldest compaction timestamp of any of the regions.
> [~apurtell], [~ghelmling], [~giacomotaylor].



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