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https://issues.apache.org/jira/browse/PIG-976?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12766405#action_12766405
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Hadoop QA commented on PIG-976:
-------------------------------
-1 overall. Here are the results of testing the latest attachment
http://issues.apache.org/jira/secure/attachment/12422254/PIG-976.patch
against trunk revision 825712.
+1 @author. The patch does not contain any @author tags.
+1 tests included. The patch appears to include 8 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 generated 308 release audit warnings
(more than the trunk's current 305 warnings).
-1 core tests. The patch failed 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/84/testReport/
Release audit warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/84/artifact/trunk/patchprocess/releaseAuditDiffWarnings.txt
Findbugs warnings:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/84/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html
Console output:
http://hudson.zones.apache.org/hudson/job/Pig-Patch-h7.grid.sp2.yahoo.net/84/console
This message is automatically generated.
> Multi-query optimization throws ClassCastException
> --------------------------------------------------
>
> Key: PIG-976
> URL: https://issues.apache.org/jira/browse/PIG-976
> Project: Pig
> Issue Type: Bug
> Components: impl
> Affects Versions: 0.4.0
> Reporter: Ankur
> Assignee: Richard Ding
> Attachments: PIG-976.patch, PIG-976.patch, PIG-976.patch,
> PIG-976.patch, PIG-976.patch
>
>
> Multi-query optimization fails to merge 2 branches when 1 is a result of
> Group By ALL and another is a result of Group By field1 where field 1 is of
> type long. Here is the script that fails with multi-query on.
> data = LOAD 'test' USING PigStorage('\t') AS (a:long, b:double, c:double);
> A = GROUP data ALL;
> B = FOREACH A GENERATE SUM(data.b) AS sum1, SUM(data.c) AS sum2;
> C = FOREACH B GENERATE (sum1/sum2) AS rate;
> STORE C INTO 'result1';
> D = GROUP data BY a;
> E = FOREACH D GENERATE group AS a, SUM(data.b), SUM(data.c);
> STORE E into 'result2';
>
> Here is the exception from the logs
> java.lang.ClassCastException: org.apache.pig.data.DefaultTuple cannot be cast
> to org.apache.pig.data.DataBag
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject.processInputBag(POProject.java:399)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject.getNext(POProject.java:180)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.processInput(POUserFunc.java:145)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:197)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POUserFunc.getNext(POUserFunc.java:235)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:254)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:204)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.PhysicalOperator.processInput(PhysicalOperator.java:231)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POLocalRearrange.getNext(POLocalRearrange.java:240)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.PODemux.runPipeline(PODemux.java:264)
> at
> org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.PODemux.getNext(PODemux.java:254)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigCombiner$Combine.processOnePackageOutput(PigCombiner.java:196)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigCombiner$Combine.reduce(PigCombiner.java:174)
> at
> org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigCombiner$Combine.reduce(PigCombiner.java:63)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.combineAndSpill(MapTask.java:906)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.sortAndSpill(MapTask.java:786)
> at
> org.apache.hadoop.mapred.MapTask$MapOutputBuffer.flush(MapTask.java:698)
> at org.apache.hadoop.mapred.MapTask.run(MapTask.java:228)
> at
> org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2206)
--
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