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https://issues.apache.org/jira/browse/PIG-3986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on PIG-3986 started by Tongjie Chen.
> PigSplit to support multiple split class
> ----------------------------------------
>
> Key: PIG-3986
> URL: https://issues.apache.org/jira/browse/PIG-3986
> Project: Pig
> Issue Type: Improvement
> Reporter: Tongjie Chen
> Assignee: Tongjie Chen
>
> Currently one PigSplit wraps one to many input split and pig assign one
> PigSplit to one mapper; however when it serializes the split class name, it
> expects all input split to be of same class, hence it serializes class name
> only once --- the first split (see code snippet at the end).
> To support PigSplit wrap multi split class, we can serialize each split along
> with its own class name. This would allow each split to be
> deserialized/restored correctly. Of course, LoadFunc would need to dispatch
> input split to appropriate record reader.
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