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Hadoop QA commented on PIG-935: ------------------------------- -1 overall. Here are the results of testing the latest attachment http://issues.apache.org/jira/secure/attachment/12417766/skjoinmapbug.patch against trunk revision 806668. +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 failed core unit tests. +1 contrib tests. The patch passed contrib unit tests. Test results: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/179/testReport/ Findbugs warnings: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/179/artifact/trunk/build/test/findbugs/newPatchFindbugsWarnings.html Console output: http://hudson.zones.apache.org/hudson/job/Pig-Patch-minerva.apache.org/179/console This message is automatically generated. > Skewed join throws an exception when used with map keys > ------------------------------------------------------- > > Key: PIG-935 > URL: https://issues.apache.org/jira/browse/PIG-935 > Project: Pig > Issue Type: Bug > Reporter: Sriranjan Manjunath > Attachments: skjoinmapbug.patch > > > Skewed join throws a runtime exception for the following query: > A = load 'map.txt' as (e); > B = load 'map.txt' as (f); > C = join A by (chararray)e#'a', B by (chararray)f#'a' using "skewed"; > explain C; > Exception: > Caused by: java.lang.ClassCastException: > org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POCast > cannot be cast to > org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.PO > Project > at > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.getSortCols(MRCompiler.java:1492) > at > org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MRCompiler.getSamplingJob(MRCompiler.java:1894) > ... 27 more -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.