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https://issues.apache.org/jira/browse/HBASE-9855?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13807746#comment-13807746
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chunhui shen commented on HBASE-9855:
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Patch is good for me.
Move the new class 'ConcurrentIndex' to util package?
> evictBlocksByHfileName improvement for bucket cache
> ---------------------------------------------------
>
> Key: HBASE-9855
> URL: https://issues.apache.org/jira/browse/HBASE-9855
> Project: HBase
> Issue Type: Improvement
> Components: regionserver
> Affects Versions: 0.98.0
> Reporter: Liang Xie
> Assignee: Liang Xie
> Attachments: HBase-9855.txt
>
>
> In deed, it comes from fb's l2 cache by [~avf]'s nice work, i just did a
> simple backport here. It could improve a linear-time search through the whole
> cache map into a log-access-time map search.
> I did a small bench, showed it brings a bit gc overhead, but considering the
> evict on close triggered by frequent compaction activity, seems reasonable?
> and i thought bring a "evictOnClose" config into BucketCache ctor and only
> put/remove the new index map while evictOnClose is true, seems this value
> could be set by each family schema, but BucketCache is a global instance not
> per each family, so just ignore it rightnow...
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