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https://issues.apache.org/jira/browse/HBASE-18652?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16163153#comment-16163153
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Biju Nair commented on HBASE-18652:
-----------------------------------
Making {{getL1}} method of CacheConfig {{synchronized}} as in v3.0 of the patch
should remove the FindBugs warning.
> Expose individual cache stats in a CombinedCache through JMX
> ------------------------------------------------------------
>
> Key: HBASE-18652
> URL: https://issues.apache.org/jira/browse/HBASE-18652
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Reporter: Biju Nair
> Assignee: Biju Nair
> Fix For: 1.4.0, 1.5.0, 2.0.0-alpha-3
>
> Attachments: 18652-branch-1-V3.0.PATCH, HBASE-18652-addendum.patch,
> HBASE-18652-BRANCH-1.PATCH, HBASE-18652-branch-1-v1.0.patch,
> HBASE-18652-branch-1-V2.0.PATCH, HBASE-18652-branch-1-V3.0.PATCH,
> HBASE-18652.PATCH, HBASE-18652-V1.0.PATCH, HBASE-18652-V2.0.PATCH,
> HBASE-18652-WIP.PATCH
>
>
> With offHeap cache being used to store data blocks and on-heap for index and
> bloom filters, exposing the stats from the individual caches through JMX will
> help understand the cache usage trend. Currently the combined cache stats is
> available through JMX which may not provide insight into the individual cache
> usage.
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