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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1341) Create HTable Pooler
Date Sun, 03 May 2009 00:04:30 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12705348#action_12705348
] 

Andrew Purtell commented on HBASE-1341:
---------------------------------------

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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