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https://issues.apache.org/jira/browse/PIG-1438?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12876980#action_12876980
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Hadoop QA commented on PIG-1438:
--------------------------------
+1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12446652/PIG-1438_1.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/334/testReport/
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/334/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/334/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, PIG-1438_1.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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