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https://issues.apache.org/jira/browse/PIG-2139?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Thejas M Nair updated PIG-2139:
-------------------------------
Affects Version/s: 0.10
0.9.0
0.8.0
0.8.1
Fix Version/s: 0.9.0
> LogicalExpressionSimplifier optimizer rule should check if udf is
> deterministic while checking if they are equal
> ----------------------------------------------------------------------------------------------------------------
>
> Key: PIG-2139
> URL: https://issues.apache.org/jira/browse/PIG-2139
> Project: Pig
> Issue Type: Bug
> Affects Versions: 0.8.0, 0.8.1, 0.9.0, 0.10
> Reporter: Thejas M Nair
> Assignee: Thejas M Nair
> Fix For: 0.9.0, 0.10
>
> Attachments: PIG-2139.1.patch
>
>
> LogicalExpressionSimplifier simplifies filter expressions. In the process, it
> compares udfs to see if they are 'equal' (ie expected to produce same
> results). But it does not check if the udfs are annotated as
> @Nondeterministic. If such an annotation exists, then the udfs should not be
> considered equal. UserFuncition.isEqual() is being used to compare the udfs.
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