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https://issues.apache.org/jira/browse/PIG-3858?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13958280#comment-13958280
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Lorand Bendig commented on PIG-3858:
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[~cheolsoo] Well, me neither... I also thought of subclassing
TaskInputOutputContext but this wouldn't be straightforward because in
Hadoop1/Hadoop2 it's an abstract class/interface.
> PigLogger/PigStatusReporter is not set for fetch tasks
> ------------------------------------------------------
>
> Key: PIG-3858
> URL: https://issues.apache.org/jira/browse/PIG-3858
> Project: Pig
> Issue Type: Bug
> Reporter: Lorand Bendig
> Assignee: Lorand Bendig
> Attachments: PIG-3858.patch
>
>
> PigLogger initialization is missing which leads to NPE if counters are
> accessed during a fetch tasks. Some queries to reproduce this issue:
> 1.
> {code}
> set opt.fetch true;
> A = load ...
> B = foreach A generate TOBAG(TOTUPLE(null));
> dump B;
> {code}
> -> NPE when PigWarning.SKIP_UDF_CALL_FOR_NULL is incremented
> 2.
> {code}
> set opt.fetch true;
> set pig.udf.profile true;
> A = load ...
> B = foreach A generate [any UDF]
> {code}
> -> NPE when POUserFunc.INVOCATION_COUNTER is incremented
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