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https://issues.apache.org/jira/browse/HBASE-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14269525#comment-14269525
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Vladimir Rodionov commented on HBASE-12748:
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I verified patch on a latest master. No issues.
{code}
patch -p0 < HBase-12748.patch.2
{code}
Worked fine.
> RegionCoprocessorHost.execOperation creates too many iterator objects
> ---------------------------------------------------------------------
>
> Key: HBASE-12748
> URL: https://issues.apache.org/jira/browse/HBASE-12748
> Project: HBase
> Issue Type: Sub-task
> Affects Versions: 0.94.25, 0.98.9
> Reporter: Vladimir Rodionov
> Assignee: Vladimir Rodionov
> Fix For: 1.0.0, 2.0.0, 0.98.10, 0.94.27
>
>
> This is typical pattern of enhanced for ... loop usage in a hot code path.
> For every HBase operation it instantiates iterator for coprocessor list
> twice.
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