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https://issues.apache.org/jira/browse/PIG-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Noguchi updated PIG-3051:
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Attachment: pig-3051-v1.1-withe2etest.txt
Added an e2e test since I needed columnprune + limitoptimizer. Let me know if
unit test is better for this.
Also, appreciate if someone can take a look at my fix since this issue can lead
to incorrect output.
> java.lang.IndexOutOfBoundsException failure with LimitOptimizer +
> ColumnPruning
> --------------------------------------------------------------------------------
>
> Key: PIG-3051
> URL: https://issues.apache.org/jira/browse/PIG-3051
> Project: Pig
> Issue Type: Bug
> Components: parser
> Affects Versions: 0.10.0, 0.11
> Reporter: Koji Noguchi
> Assignee: Koji Noguchi
> Attachments: pig-3051-v1.1-withe2etest.txt,
> pig-3051-v1-withouttest.txt
>
>
> Had a user hitting
> "Caused by: java.lang.IndexOutOfBoundsException: Index: 1, Size: 1" error
> when he had multiple stores and limit in his code.
> I couldn't reproduce this with short pig code (due to ColumnPruning somehow
> not happening when shortened), but here's a snippet.
> {noformat}
> ...
> G3 = FOREACH G2 GENERATE sortCol, FLATTEN(group) as label, (long)COUNT(G1) as
> cnt;
> G4 = ORDER G3 BY cnt DESC PARALLEL 25;
> ONEROW = LIMIT G4 1;
> U1 = FOREACH ONEROW GENERATE 3 as sortcol, 'somelabel' as label, cnt;
> store U1 into 'u1' using PigStorage();
> store G4 into 'g4' using PigStorage();
> {noformat}
> With '-t ColumnMapKeyPrune', job didn't hit the error.
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