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https://issues.apache.org/jira/browse/HBASE-14624?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14970567#comment-14970567
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chunhui shen commented on HBASE-14624:
--------------------------------------
{code}
- b = freeBuckets.get(freeBuckets.size() - 1);
+ b = freeBuckets.iterator().next();
{code}
In the context, the first entry and the last entry are both ok.
> BucketCache.freeBlock is too expensive
> --------------------------------------
>
> Key: HBASE-14624
> URL: https://issues.apache.org/jira/browse/HBASE-14624
> Project: HBase
> Issue Type: Bug
> Components: BlockCache
> Affects Versions: 1.0.0
> Reporter: Randy Fox
> Fix For: 2.0.0, 1.2.0, 1.3.0, 1.0.3, 1.1.3, 0.98.16
>
> Attachments: 14624-v1.txt, 14624-v2.txt
>
>
> Moving regions is unacceptably slow when using bucket cache, as it takes too
> long to free all the blocks.
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