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Posted to dev@pig.apache.org by "Hadoop QA (JIRA)" <ji...@apache.org> on 2010/06/09 00:24:13 UTC
[jira] Commented: (PIG-1438) [Performance] MultiQueryOptimizer
should also merge DISTINCT jobs
[ https://issues.apache.org/jira/browse/PIG-1438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876840#action_12876840 ]
Hadoop QA commented on PIG-1438:
--------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12446604/PIG-1438.patch
against trunk revision 952098.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 3 new or modified tests.
+1 javadoc. The javadoc tool did not generate any warning messages.
+1 javac. The applied patch does not increase the total number of javac compiler warnings.
+1 findbugs. The patch does not introduce any new Findbugs warnings.
+1 release audit. The applied patch does not increase the total number of release audit warnings.
+1 core tests. The patch passed core unit tests.
+1 contrib tests. The patch passed contrib unit tests.
Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/333/testReport/
Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/333/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/333/console
This message is automatically generated.
> [Performance] MultiQueryOptimizer should also merge DISTINCT jobs
> -----------------------------------------------------------------
>
> Key: PIG-1438
> URL: https://issues.apache.org/jira/browse/PIG-1438
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Affects Versions: 0.7.0
> Reporter: Richard Ding
> Assignee: Richard Ding
> Fix For: 0.8.0
>
> Attachments: PIG-1438.patch
>
>
> Current implementation doesn't merge jobs derived from DISTINCT statements. The reason is that DISTINCT jobs are implemented using a special combiner (DistinctCombiner). But we should be able to merge jobs that have the same type of combiner (e.g. merge multiple DISTINCT jobs into one).
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