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https://issues.apache.org/jira/browse/HBASE-11206?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14003054#comment-14003054
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Nick Dimiduk commented on HBASE-11206:
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You think we should go this route? Last I looked at this implementation, it
assumes an entirely on-heap world. I think by definition it cannot support a
mixed deployment (ie, on-heap memstore, off-heap blockcache). Would be cool to
support an off-heap version once we have an off-heap MSLAB.
Point is, we can either enable this by default, or BucketCache by default, but
,as it stands today, not both.
> 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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