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https://issues.apache.org/jira/browse/HBASE-9990?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13914419#comment-13914419
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Nicolas Liochon commented on HBASE-9990:
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Committed to trunk.
> HTable uses the conf for each "newCaller"
> -----------------------------------------
>
> Key: HBASE-9990
> URL: https://issues.apache.org/jira/browse/HBASE-9990
> Project: HBase
> Issue Type: Bug
> Components: Client
> Affects Versions: 0.98.0, 0.96.0
> Reporter: Nicolas Liochon
> Assignee: Nicolas Liochon
> Fix For: 0.99.0
>
> Attachments: 9990.v1.patch, 9990.v2.patch
>
>
> You can construct a RpcRetryingCallerFactory, but actually the conf is read
> for each caller creation. Reading the conf is obviously expensive, and a
> profiling session shows it. If we want to sent hundreds of thousands of
> queries per second, we should not do that.
> RpcRetryingCallerFactory.newCaller is called for each get, for example.
> This is not a regression, we have something similar in 0.94.
> On the 0.96, we see the creation of: java.util.regex.Matcher: 15739712b after
> a few thousand calls to "get".
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