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https://issues.apache.org/jira/browse/HBASE-16305?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15399836#comment-15399836
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Jerry He commented on HBASE-16305:
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Is it re-creatable via the PerformanceEvaluation tool? There is a
'--oneCon=true or false' option for multi-threaded runs.
> Multi threaded scan performance bottlenecked on Connection
> ----------------------------------------------------------
>
> Key: HBASE-16305
> URL: https://issues.apache.org/jira/browse/HBASE-16305
> Project: HBase
> Issue Type: Bug
> Reporter: Elliott Clark
>
> Pretty simple repro. On a single region server host ~10 or more regions. Then
> for each region spawn a thread that starts a scan. Try an pull the scan as
> fast as possible.
> If all the scans are created through the same connection then it's slow. If
> all the scans are created through different connections then the scan speed
> is doubled.
> Since we recommend a single connection per application this is pretty
> surprising behavior.
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