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https://issues.apache.org/jira/browse/PIG-3123?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Nick White updated PIG-3123:
----------------------------
Attachment: PIG-3123.2.patch
Now all the unit tests pass.
> Simplify Logical Plans By Removing Unneccessary Identity Projections
> --------------------------------------------------------------------
>
> Key: PIG-3123
> URL: https://issues.apache.org/jira/browse/PIG-3123
> Project: Pig
> Issue Type: Improvement
> Components: impl
> Affects Versions: 0.10.0
> Reporter: Nick White
> Assignee: Nick White
> Fix For: 0.12
>
> Attachments: PIG-3123.0.patch, PIG-3123.1.patch, PIG-3123.2.patch
>
>
> The TypeCastInserter inserts a LOForeach into a logical plan even if it
> doesn't need to make any casts. The attached patch adds a special case to the
> TypeCastInserter to skip this behaviour if possible. The patch also refactors
> some of the if-instanceof-x-else-if-instanceof-y behaviour into subclasses.
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