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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-12748) RegionCoprocessorHost.execOperation creates too many iterator objects
Date Sat, 26 Sep 2015 01:10:04 GMT

    [ https://issues.apache.org/jira/browse/HBASE-12748?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14908953#comment-14908953
] 

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

FAILURE: Integrated in HBase-1.3 #207 (See [https://builds.apache.org/job/HBase-1.3/207/])
HBASE-12748 RegionCoprocessorHost.execOperation creates too many iterator objects (apurtell:
rev 70c3ed1c9c73f1f36d658b2aae5d6ec6fbfd9eb0)
* hbase-server/src/main/java/org/apache/hadoop/hbase/util/SortedList.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
* hbase-server/src/main/java/org/apache/hadoop/hbase/coprocessor/CoprocessorHost.java
* hbase-server/src/test/java/org/apache/hadoop/hbase/util/TestSortedList.java
* hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/RegionCoprocessorHost.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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