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https://issues.apache.org/jira/browse/HBASE-1341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12705348#action_12705348
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Andrew Purtell commented on HBASE-1341:
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The patch could call size() on the CLQ instead, that would be no problem.
"currentSize" was an attempt to avoid the overhead of that, which is llinear
not constant time according to Sun's javadoc. A race would mean occasional
extra pooled instances, some small factor. "currentSize" is declared as
volatile, which would keep that window small, right?
> Create HTable Pooler
> --------------------
>
> Key: HBASE-1341
> URL: https://issues.apache.org/jira/browse/HBASE-1341
> Project: Hadoop HBase
> Issue Type: New Feature
> Components: client, io
> Reporter: Jonathan Gray
> Priority: Minor
> Fix For: 0.20.0
>
> Attachments: hbase-1341-2.patch, hbase-1341.patch
>
>
> A client class that takes care of properly pooling HTable references for use
> in multi-threaded, low-latency Java clients.
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