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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-14613) Remove MemStoreChunkPool?
Date Mon, 18 Jul 2016 14:49:20 GMT

    [ https://issues.apache.org/jira/browse/HBASE-14613?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15382387#comment-15382387
] 

Anoop Sam John commented on HBASE-14613:
----------------------------------------

As part of the off heaping effort, we have added support for DBB based MSLAB chunk pool. This
seems working fine and we can work with much lesser sized heap size and better avg GC pause
and net GC pause. So IMO we should not remove MSLAB chunk pool.

> Remove MemStoreChunkPool?
> -------------------------
>
>                 Key: HBASE-14613
>                 URL: https://issues.apache.org/jira/browse/HBASE-14613
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Lars Hofhansl
>            Priority: Minor
>         Attachments: 14613-0.98.txt, gc.png, writes.png
>
>
> I just stumbled across MemStoreChunkPool. The idea behind is to reuse chunks of allocations
rather than letting the GC handle this.
> Now, it's off by default, and it seems to me to be of dubious value. I'd recommend just
removing it.



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