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https://issues.apache.org/jira/browse/PIG-1475?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12883768#action_12883768
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Jeff Zhang commented on PIG-1475:
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Mike, Could you paste your pig script and the full exception call stack ?
Attach the sample data would be better
> Large number of FILTER matching clauses causes internal error 2998
> ------------------------------------------------------------------
>
> Key: PIG-1475
> URL: https://issues.apache.org/jira/browse/PIG-1475
> Project: Pig
> Issue Type: Bug
> Components: grunt
> Affects Versions: 0.6.0
> Environment: Amazon Elastic MapReduce with Pig 0.6 and Hadoop 0.20.2
> Reporter: Mike Subelsky
> Priority: Minor
>
> I'm generating reports using Pig where I only want to report on rows matching
> a set of regular expressions, but those regular expressions are pretty
> numerous.
> Pig fails with this internal error when I run FILTER with 500 terms:
> 2010-06-29 15:46:04,579 [main] ERROR org.apache.pig.tools.grunt.Grunt - ERROR
> 2998: Unhandled internal error. null
> This only occurred when I ran my Pig script against Hadoop with the full
> dataset. When I ran Pig in local mode, with a smaller sample file, Pig
> handled the FILTER command just fine.
> The workaround has been to split my list into two separate lists of 250 then
> UNION the results, but I assume this is something that could be addressed in
> the code.
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