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Posted to issues@hbase.apache.org by "Mike Drob (JIRA)" <ji...@apache.org> on 2017/07/25 17:40:00 UTC

[jira] [Commented] (HBASE-11206) Enable automagically tweaking memstore and blockcache sizes

    [ https://issues.apache.org/jira/browse/HBASE-11206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16100419#comment-16100419 ] 

Mike Drob commented on HBASE-11206:
-----------------------------------

Do we want to revisit this for 2.0?

> Enable automagically tweaking memstore and blockcache sizes
> -----------------------------------------------------------
>
>                 Key: HBASE-11206
>                 URL: https://issues.apache.org/jira/browse/HBASE-11206
>             Project: HBase
>          Issue Type: Task
>            Reporter: stack
>            Assignee: stack
>
> HBASE-5349
> "Automagically tweak global memstore and block cache sizes based on workload" adds a nice new feature. It is off by default.  Lets turn it on for 0.99.  Liang Xie is concerned that automatically shifting blockcache and memstore sizes could wreck havoc w/ GC'ing in low-latency serving situation -- a valid concern -- but lets enable this feature in 0.99 and see how it does.  Can always disable it before 1.0 if a problem.



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