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https://issues.apache.org/jira/browse/PIG-975?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ying He updated PIG-975:
------------------------

    Attachment: PIG-975.patch4

Add switch to old bag.  Setting property pig.cachedbag.type=default  would 
switch to old default bag. If not specified, use InternalCachedBag.l

> Need a databag that does not register with SpillableMemoryManager and spill 
> data pro-actively
> ---------------------------------------------------------------------------------------------
>
>                 Key: PIG-975
>                 URL: https://issues.apache.org/jira/browse/PIG-975
>             Project: Pig
>          Issue Type: Improvement
>    Affects Versions: 0.2.0
>            Reporter: Ying He
>            Assignee: Ying He
>             Fix For: 0.2.0
>
>         Attachments: internalbag.xls, PIG-975.patch, PIG-975.patch2, 
> PIG-975.patch3, PIG-975.patch4
>
>
> POPackage uses DefaultDataBag during reduce process to hold data. It is 
> registered with SpillableMemoryManager and prone to OutOfMemoryException.  
> It's better to pro-actively managers the usage of the memory. The bag fills 
> in memory to a specified amount, and dump the rest the disk.  The amount of 
> memory to hold tuples is configurable. This can avoid out of memory error.

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