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https://issues.apache.org/jira/browse/HBASE-11206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14002764#comment-14002764
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stack commented on HBASE-11206:
-------------------------------

Oh, I see why you are asking (after reading tail of HBASE-11165).  Yeah, this 
could help some.  Would probably need to be more radical than HBASE-5349 but it 
is a start.

> 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
>             Fix For: 0.99.0
>
>
> 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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