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Posted to dev@pig.apache.org by "Cheolsoo Park (JIRA)" <ji...@apache.org> on 2014/06/09 01:04:02 UTC
[jira] [Resolved] (PIG-3986) PigSplit to support multiple split
class
[ https://issues.apache.org/jira/browse/PIG-3986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Cheolsoo Park resolved PIG-3986.
--------------------------------
Resolution: Fixed
Fix Version/s: 0.14.0
+1. All unit test pass.
Committed {{PIG-3986-2.patch}} into trunk.
> 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
> Fix For: 0.14.0
>
> Attachments: PIG-3986-2.patch, PIG-3986.patch.txt
>
>
> 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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