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https://issues.apache.org/jira/browse/HBASE-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14906626#comment-14906626
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Andrew Purtell commented on HBASE-12748:
----------------------------------------
Local build passes all tests all modules.
{noformat}
[INFO] Reactor Summary:
[INFO]
[INFO] Apache HBase ....................................... SUCCESS [ 5.096 s]
[INFO] Apache HBase - Checkstyle .......................... SUCCESS [ 0.909 s]
[INFO] Apache HBase - Resource Bundle ..................... SUCCESS [ 0.308 s]
[INFO] Apache HBase - Annotations ......................... SUCCESS [ 1.178 s]
[INFO] Apache HBase - Protocol ............................ SUCCESS [ 16.205 s]
[INFO] Apache HBase - Common .............................. SUCCESS [01:52 min]
[INFO] Apache HBase - Procedure ........................... SUCCESS [02:01 min]
[INFO] Apache HBase - Client .............................. SUCCESS [01:24 min]
[INFO] Apache HBase - Hadoop Compatibility ................ SUCCESS [ 7.306 s]
[INFO] Apache HBase - Hadoop Two Compatibility ............ SUCCESS [ 7.463 s]
[INFO] Apache HBase - Prefix Tree ......................... SUCCESS [ 11.143 s]
[INFO] Apache HBase - Server .............................. SUCCESS [ 03:20 h]
[INFO] Apache HBase - Testing Util ........................ SUCCESS [ 1.944 s]
[INFO] Apache HBase - Thrift .............................. SUCCESS [03:27 min]
[INFO] Apache HBase - Shell ............................... SUCCESS [ 2.954 s]
[INFO] Apache HBase - Integration Tests ................... SUCCESS [ 1.495 s]
[INFO] Apache HBase - Examples ............................ SUCCESS [ 4.268 s]
[INFO] Apache HBase - Rest ................................ SUCCESS [15:20 min]
[INFO] Apache HBase - External Block Cache ................ SUCCESS [ 1.124 s]
[INFO] Apache HBase - Assembly ............................ SUCCESS [ 12.564 s]
[INFO] Apache HBase - Shaded .............................. SUCCESS [ 0.115 s]
[INFO] Apache HBase - Shaded - Client ..................... SUCCESS [ 0.374 s]
[INFO] Apache HBase - Shaded - Server ..................... SUCCESS [ 0.623 s]
[INFO] Apache HBase - Spark ............................... SUCCESS [02:56 min]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 03:48 h
[INFO] Finished at: 2015-09-23T19:53:09-07:00
[INFO] Final Memory: 125M/936M
[INFO] ------------------------------------------------------------------------
{noformat}
> 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, 1.3.0, 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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