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From "Anoop Sam John (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-11696) Make CombinedBlockCache resizable.
Date Fri, 08 Aug 2014 14:34:12 GMT

    [ https://issues.apache.org/jira/browse/HBASE-11696?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14090801#comment-14090801
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Anoop Sam John commented on HBASE-11696:
----------------------------------------

bq.Nice. Where is this doc'd. This feature is not on by default, right (because afraid messing
w/ mem settings will mess up GC?). Shouldn't we turn it on in master branch?
Will add to our book. Will work on doc patch.   Yes I will raise an issue to turn it ON by
default.  Will do some more long run testing around this before we tunr it ON.
bq.You want this delineation for ergonomic feature?
Was just thinking whether it will help.  Will have to read through that code more and test.
  I believe you work in this area. So can help you boss.

> Make CombinedBlockCache resizable.
> ----------------------------------
>
>                 Key: HBASE-11696
>                 URL: https://issues.apache.org/jira/browse/HBASE-11696
>             Project: HBase
>          Issue Type: Improvement
>            Reporter: Anoop Sam John
>            Assignee: Anoop Sam John
>             Fix For: 2.0.0
>
>
> HBASE-5349 adds auto tuning of memstore heap and block cache heap. Block cache needs
to be resizable in order for this. CombinedBlockCache is not marked resizable now. We can
make this. On resize the L1 cache (ie. LRU cache) can get resized.



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