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https://issues.apache.org/jira/browse/HBASE-12859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14293799#comment-14293799
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Andrew Purtell commented on HBASE-12859:
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{quote}
bq. I apologize for the rant...
If noone complains, it'll stay the way it is for ever. Please rant Lars Hofhansl
{quote}
I think we should have a "singularity v2" for HBase 2.0 and rip out all of the
protobuf stuff and instead use properly versioned writables with up front
connection negotiation :-) - I'd be happy to rant on that. :-) A contentious
topic for some other time.
> 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-v4.txt,
> 12859-v5.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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