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https://issues.apache.org/jira/browse/PIG-1904?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13066287#comment-13066287
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Thejas M Nair commented on PIG-1904:
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The approach you are proposing for @NonDeterministic udf sounds good.
PIG-1904.1.patch looks good. Some comments -
I think it is better to retain the restriction that a split needs at least two
output aliases. This will prevent split being used instead of filter, and from
pig becoming perl ;).
Maybe, something like -
split_clause : SPLIT rel INTO split_branch (COMMA split_branch)* ( COMMA
split_branch ) |( COMMA split_otherwise ))
In LogicalPlanBuilder.java, I think it is better to change the assertion to a
if(root == null){throw exception;}, as assertions are not enabled by default.
> Default split destination
> -------------------------
>
> Key: PIG-1904
> URL: https://issues.apache.org/jira/browse/PIG-1904
> Project: Pig
> Issue Type: New Feature
> Reporter: Daniel Dai
> Labels: gsoc2011
> Fix For: 0.10
>
> Attachments: PIG-1904.1.patch
>
>
> "split" statement is better to have a default destination, eg:
> {code}
> SPLIT A INTO X IF f1<7, Y IF f2==5, Z IF (f3<6 OR f3>6), OTHER otherwise; --
> OTHERS has all tuples with f1>=7 && f2!=5 && f3==6
> {code}
> This is a candidate project for Google summer of code 2011. More information
> about the program can be found at http://wiki.apache.org/pig/GSoc2011
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