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From "Daniel Dai (JIRA)" <j...@apache.org>
Subject [jira] Commented: (PIG-1296) Skewed join fail due to negative partition index
Date Thu, 18 Mar 2010 21:10:27 GMT

    [ https://issues.apache.org/jira/browse/PIG-1296?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12847113#action_12847113
] 

Daniel Dai commented on PIG-1296:
---------------------------------

Unit test is hard to construct. We manually tested the failing script and it works.

> Skewed join fail due to negative partition index
> ------------------------------------------------
>
>                 Key: PIG-1296
>                 URL: https://issues.apache.org/jira/browse/PIG-1296
>             Project: Pig
>          Issue Type: Bug
>          Components: impl
>    Affects Versions: 0.7.0
>            Reporter: Daniel Dai
>            Assignee: Daniel Dai
>             Fix For: 0.7.0
>
>         Attachments: PIG-1296-1.patch
>
>
> Skewed join throw stack:
> java.io.IOException: Illegal partition for Partition: -1 Null: false index: 0 (fc52di95l6m3j,20100210)
(-3648)
>             at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:904)
>             at org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:541)
>             at org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80)
>             at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$MapWithPartitionIndex.collect(PigMapReduce.java:187)
>             at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapReduce$MapWithPartitionIndex.runPipeline(PigMapReduce.java:206)
>             at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:227)
>             at org.apache.pig.backend.hadoop.executionengine.mapReduceLayer.PigMapBase.map(PigMapBase.java:52)
>             at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144)
>             at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:621)
>             at org.apache.hadoop.mapred.MapTask.run(MapTask.java:305)
>             at org.apache.hadoop.mapred.Child.main(Child.java:159)

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