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https://issues.apache.org/jira/browse/PIG-1048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12773333#action_12773333
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Alan Gates commented on PIG-1048:
---------------------------------
When attempting to apply this patch to the 0.5 branch, I got the following
error:
Testcase: testSkewedJoinOneValue took 145.739 sec
Caused an ERROR
Unable to open iterator for alias E
org.apache.pig.impl.logicalLayer.FrontendException: ERROR 1066: Unable to open
iterator for alias E
at org.apache.pig.PigServer.openIterator(PigServer.java:475)
at
org.apache.pig.test.TestSkewedJoin.testSkewedJoinOneValue(TestSkewedJoin.java:340)
Caused by: org.apache.pig.backend.executionengine.ExecException: ERROR 2997:
Unable to recreate exception from backed error: java.lang.RuntimeException:
Error in configuring object
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getErrorMessages(Launcher.java:237)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher.getStats(Launcher.java:181)
at
org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.MapReduceLauncher.launchPig(MapReduceLauncher.java:209)
at
org.apache.pig.backend.hadoop.executionengine.HExecutionEngine.execute(HExecutionEngine.java:265)
at org.apache.pig.PigServer.executeCompiledLogicalPlan(PigServer.java:773)
at org.apache.pig.PigServer.store(PigServer.java:522)
at org.apache.pig.PigServer.openIterator(PigServer.java:458)
> inner join using 'skewed' produces multiple rows for keys with single row in
> both input relations
> -------------------------------------------------------------------------------------------------
>
> Key: PIG-1048
> URL: https://issues.apache.org/jira/browse/PIG-1048
> Project: Pig
> Issue Type: Bug
> Reporter: Thejas M Nair
> Assignee: Sriranjan Manjunath
> Fix For: 0.6.0
>
> Attachments: pig_1048.patch
>
>
> ${code}
> grunt> cat students.txt
> asdfxc M 23 12.44
> qwer F 21 14.44
> uhsdf M 34 12.11
> zxldf M 21 12.56
> qwer F 23 145.5
> oiue M 54 23.33
> l1 = load 'students.txt';
> l2 = load 'students.txt';
> j = join l1 by $0, l2 by $0 ;
> store j into 'tmp.txt'
> grunt> cat tmp.txt
> oiue M 54 23.33 oiue M 54 23.33
> oiue M 54 23.33 oiue M 54 23.33
> qwer F 21 14.44 qwer F 21 14.44
> qwer F 21 14.44 qwer F 23 145.5
> qwer F 23 145.5 qwer F 21 14.44
> qwer F 23 145.5 qwer F 23 145.5
> uhsdf M 34 12.11 uhsdf M 34 12.11
> uhsdf M 34 12.11 uhsdf M 34 12.11
> zxldf M 21 12.56 zxldf M 21 12.56
> zxldf M 21 12.56 zxldf M 21 12.56
> asdfxc M 23 12.44 asdfxc M 23 12.44
> asdfxc M 23 12.44 asdfxc M 23 12.44$
> ${code}
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