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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12748) RegionCoprocessorHost.execOperation creates too many iterator objects
Date Sun, 20 Nov 2016 00:31:58 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15680120#comment-15680120
] 

Hudson commented on HBASE-12748:
--------------------------------

SUCCESS: Integrated in Jenkins build HBase-1.1-JDK7 #1821 (See [https://builds.apache.org/job/HBase-1.1-JDK7/1821/])
HBASE-12748 RegionCoprocessorHost.execOperation creates too many (tedyu: rev 47423c450dccda0a4fa9c7727e87ddd558db0c02)
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionServerCoprocessorHost.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.java
* (add) hbase-server/src/main/java/org/apache/hadoop/hbase/util/SortedList.java
* (add) hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestSortedList.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterCoprocessorHost.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/wal/WALCoprocessorHost.java
* (edit) hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.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, 1.1.8
>
>         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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