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https://issues.apache.org/jira/browse/PIG-918?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749390#action_12749390
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He Yongqiang commented on PIG-918:
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why not just use a for loop?
> [zebra] LOAD call will hang if only the first column group is queried
> ---------------------------------------------------------------------
>
> Key: PIG-918
> URL: https://issues.apache.org/jira/browse/PIG-918
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.3.0
> Reporter: Yan Zhou
> Fix For: 0.4.0
>
> Attachments: pig-zebra.patch
>
>
> Zebra's LOAD call with projections that only nclude column(s) in the first
> column group will hang because an improper range of random numbers for index
> to the array of column groups always skips the first element so that if all
> other column groups are not used, the looping keeps running without a chance
> to break.
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