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Date: Sat, 7 Jun 2014 01:31:04 +0000 (UTC)
From: "Tongjie Chen (JIRA)" <jira@apache.org>
To: pig-dev@hadoop.apache.org
Message-ID: <JIRA.12718302.1401856416309.86376.1402104664158@arcas>
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Subject: [jira] [Updated] (PIG-3986) PigSplit to support multiple split
 class
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     [ https://issues.apache.org/jira/browse/PIG-3986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tongjie Chen updated PIG-3986:
------------------------------

    Attachment: PIG-3986.patch.txt

> 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
>         Attachments: 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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