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https://issues.apache.org/jira/browse/PIG-5447?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17824136#comment-17824136
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Koji Noguchi commented on PIG-5447:
-----------------------------------
> However, inside {{{}next(){}}}, it sometimes recursively traverses the
> delegated iterator by calling {{next()}} inside
>
This only happens when key is oversampled as described in PIG-4377. Maybe
that's why we were not seeing the failure elsewhere.
> Pig-on-Spark TestSkewedJoin.testSkewedJoinOuter failing with
> NoSuchElementException
> -----------------------------------------------------------------------------------
>
> Key: PIG-5447
> URL: https://issues.apache.org/jira/browse/PIG-5447
> Project: Pig
> Issue Type: Bug
> Reporter: Koji Noguchi
> Assignee: Koji Noguchi
> Priority: Major
>
> TestSkewedJoin.testSkewedJoinOuter is consistently failing for right-outer
> and full-outer joins.
> "Caused by: java.util.NoSuchElementException: next on empty iterator"
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