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https://issues.apache.org/jira/browse/PIG-1315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12849601#action_12849601
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Ashutosh Chauhan commented on PIG-1315:
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While reading records in reducer, Pig uses reflection to instantiate typed data
objects. SortedTableSplitComparable which is a writable comparable required in
OrderedLoadFunc is an inner class of SortedTableSplit. As a result, reflection
fails and exception is thrown. To make it work, SortedTableSplitComparable
may need to move into its own class with public visibility.
> [Zebra] Implementing OrderedLoadFunc interface for Zebra TableLoader
> --------------------------------------------------------------------
>
> Key: PIG-1315
> URL: https://issues.apache.org/jira/browse/PIG-1315
> Project: Pig
> Issue Type: New Feature
> Reporter: Xuefu Zhang
> Assignee: Xuefu Zhang
> Fix For: 0.8.0
>
> Attachments: zebra.0324
>
>
> OrderedLoadFunc interface is used by Pig to do merge join and mapside
> cogrouping. For Zebra, implementing this interface is necessary to support
> mapside cogrouping.
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