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https://issues.apache.org/jira/browse/HBASE-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908904#comment-14908904
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Hudson commented on HBASE-12748:
--------------------------------

FAILURE: Integrated in HBase-1.2 #202 (See 
[https://builds.apache.org/job/HBase-1.2/202/])
HBASE-12748 RegionCoprocessorHost.execOperation creates too many iterator 
objects (apurtell: rev 8bde9ed76e0eea76b004dcbf07e353df180d0697)
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/util/SortedList.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestSortedList.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.java
* 
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALCoprocessorHost.java


> 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: Andrew Purtell
>             Fix For: 2.0.0, 1.2.0, 1.3.0, 0.98.15
>
>         Attachments: HBASE-12748.patch, HBASE-12748.patch, HBase-12748.patch
>
>
> 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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