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https://issues.apache.org/jira/browse/PIG-2163?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13092680#comment-13092680
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Zhijie Shen commented on PIG-2163:
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sorry, I tought this issue again, and found I was wrong. The memory for one bag
is savable.
Whenever a new tuple of the first relation is ejected, iterate all the
combinations of the tuples in the other n-1relationship.
> Improve nested cross to stream one relation
> -------------------------------------------
>
> Key: PIG-2163
> URL: https://issues.apache.org/jira/browse/PIG-2163
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Affects Versions: 0.10
> Reporter: Daniel Dai
> Assignee: Zhijie Shen
> Fix For: 0.10
>
>
> PIG-1916 added nested cross support for PIG. One optimization is instead of
> materialize all bags before producing result, we can stream one of the input
> to save on memory.
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