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https://issues.apache.org/jira/browse/PIG-2583?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13270977#comment-13270977
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Daniel Dai commented on PIG-2583:
---------------------------------
I take back the "last definition" part. If people keep reusing the same alias,
we shall keep the complete history:
A = load ...
A = foreach A ...
A = filter A by ...
It is possible to detect complete dead statement, but I don't want to
complicate the implementation.
However, we shall reuse scriptCache instead of introducing a new data structure.
> Add Grunt command to list the statements in cache
> -------------------------------------------------
>
> Key: PIG-2583
> URL: https://issues.apache.org/jira/browse/PIG-2583
> Project: Pig
> Issue Type: Improvement
> Affects Versions: 0.10.0
> Reporter: Daniel Dai
> Assignee: Allan Avendaño
> Priority: Minor
> Labels: newbie
> Fix For: 0.11
>
> Attachments: gruntHistory.patch, gruntHistory1.patch
>
>
> It is convenient to list statements in cache:
> grunt> a = load '1.txt';
> grunt> b = foreach a generate $0, $1;
> grunt> list
> a = load '1.txt';
> b = foreach a generate $0, $1;
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