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https://issues.apache.org/jira/browse/PIG-158?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Santhosh Srinivasan updated PIG-158:
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Attachment: is_null.patch
The is_null.patch contains the following:
1. The logical operator LOIsNull.java
2. The physical operator POIsNull.java
3. Translation of LOIsNull to POIsNull
4. Unit test cases for LOIsNull, POIsNull and the translation from LOIsNull to
POIsNull
Note:
1. The physical operators do not have the equivalent of LONot.
2. Comparison in physical operators is assumed to be a BinaryOperator. This
assumption does not hold for LONot and LOIsNull. In order to submit this patch,
I have marked the rhs operator in POIsNull as null
> Rework logical plan
> -------------------
>
> Key: PIG-158
> URL: https://issues.apache.org/jira/browse/PIG-158
> Project: Pig
> Issue Type: Sub-task
> Components: impl
> Reporter: Alan Gates
> Assignee: Alan Gates
> Attachments: is_null.patch, logical_operators.patch,
> logical_operators_rev_1.patch, logical_operators_rev_2.patch,
> logical_operators_rev_3.patch, parser_changes.patch, parser_changes_v1.patch,
> parser_changes_v2.patch, parser_changes_v3.patch, parser_changes_v4.patch,
> ParserErrors.txt, user_func_and_store.patch, visitorWalker.patch
>
>
> Rework the logical plan in line with
> http://wiki.apache.org/pig/PigExecutionModel
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