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From "stack (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-16608) Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage
Date Fri, 14 Oct 2016 17:08:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-16608?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15575886#comment-15575886
] 

stack commented on HBASE-16608:
-------------------------------

[~devaraj] User-facing doc is a TODO (Could file a JIRA @anasta ? Premature up to this but
it is now coming time). Intent is that this facility is just on and beneficial with nought
for the user to do. Otherwise we'll leave it off. Pending perf analysis.

On your concern that this be done in a branch, this work was started a long time ago when
hbase 2.0 was far off. It has gone on longer than any of us expected .  Inmemory compaction
has a large overlap with the offheaping work of Ram and Anoop. Master branch seemed the best
place to coordinate the two efforts. I think a branch makes more sense when a focused team
is working on a standalone feature. But I appreciate your concern with 2.0.0 coming up fast.

As DD says, it is tough having to cover multiple JIRAs with loads of attachments to try and
get a sense of the current state of development. In the past -- Ram, you've done this with
respect to  offheaping read path IIRC -- a summary of current state by one of the parties
involved has helped community grok where we are. Maybe I could do it. I just got my perf cluster
back and could take the current state for a spin and report back what I'm seeing?

> Introducing the ability to merge ImmutableSegments without copy-compaction or SQM usage
> ---------------------------------------------------------------------------------------
>
>                 Key: HBASE-16608
>                 URL: https://issues.apache.org/jira/browse/HBASE-16608
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Anastasia Braginsky
>         Attachments: HBASE-16417-V02.patch, HBASE-16417-V04.patch, HBASE-16417-V06.patch,
HBASE-16417-V07.patch, HBASE-16417-V08.patch, HBASE-16417-V10.patch, HBASE-16608-V01.patch,
HBASE-16608-V03.patch, HBASE-16608-V04.patch, HBASE-16608-V08.patch
>
>




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