[jira] Resolved: (PIG-496) project of bags from complex data causes failures

["Daniel Dai (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PIG-496?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Daniel Dai resolved PIG-496.
----------------------------

      Resolution: Fixed
    Hadoop Flags: [Reviewed]

Review notes:
https://reviews.apache.org/r/272/

Patch committed to trunk.

> project of bags from complex data causes failures
> -------------------------------------------------
>
>                 Key: PIG-496
>                 URL: https://issues.apache.org/jira/browse/PIG-496
>             Project: Pig
>          Issue Type: Bug
>            Reporter: Olga Natkovich
>            Assignee: Daniel Dai
>            Priority: Minor
>             Fix For: 0.9.0
>
>         Attachments: PIG-496-1.patch
>
>
> A = load 'complex data' as (x: bag{});
> B = foreach A generate x.($1, $2);
> produces stack trace:
> 2008-10-14 15:11:07,639 [main] ERROR org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.Launcher - Error message from task (reduce) task_200809241441_9923_r_000000java.lang.NullPointerException
>         at org.apache.pig.backend.hadoop.executionengine.physicalLayer.expressionOperators.POProject.getNext(POProject.java:183)
>         at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.processPlan(POForEach.java:215)
>         at org.apache.pig.backend.hadoop.executionengine.physicalLayer.relationalOperators.POForEach.getNext(POForEach.java:166)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.runPipeline(PigMapReduce.java:252)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:222)
>         at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$Reduce.reduce(PigMapReduce.java:134)
>         at org.apache.hadoop.mapred.ReduceTask.run(ReduceTask.java:318)
>         at org.apache.hadoop.mapred.TaskTracker$Child.main(TaskTracker.java:2207)
> Pradeep suspects that the problem is in src/org/apache/pig/backend/hadoop/executionengine/physicalLayer/expressionOperators/POProject.java; line 374

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