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From "Gary Helmling (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12859) Major compaction completion tracker
Date Sun, 18 Jan 2015 18:26:34 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12859?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14281892#comment-14281892

Gary Helmling commented on HBASE-12859:

Thanks for the work on this, Lars.  I will check it out tomorrow.

> 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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