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https://issues.apache.org/jira/browse/PIG-161?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12600487#action_12600487
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Santhosh Srinivasan commented on PIG-161:
-----------------------------------------

The following Physical Operators are missing:

1. PONot
2. POAnd
3. POOr
4. PORegexp
5. POCross (In the old code, POCross was re-written into foreach and cogroup)

Also, the Physical Operators assume that the Comparison Operator to be a Binary 
Expression Operator. This assumption does not hold for PONot and POIsNull.

> Rework physical plan
> --------------------
>
>                 Key: PIG-161
>                 URL: https://issues.apache.org/jira/browse/PIG-161
>             Project: Pig
>          Issue Type: Sub-task
>            Reporter: Alan Gates
>            Assignee: Alan Gates
>         Attachments: arithmeticOperators.patch, BinCondAndNegative.patch, 
> CastAndMapLookUp.patch, incr2.patch, incr3.patch, incr4.patch, incr5.patch, 
> logToPhyTranslator.patch, MRCompilerTests_PlansAndOutputs.txt, 
> Phy_AbsClass.patch, physicalOps.patch, physicalOps.patch, physicalOps.patch, 
> physicalOps.patch, physicalOps_latest.patch, POCast.patch, POCast.patch, 
> podistinct.patch, pogenerate.patch, pogenerate.patch, pogenerate.patch, 
> posort.patch, POUserFuncCorrection.patch, 
> TEST-org.apache.pig.test.TestLocalJobSubmission.txt, 
> TEST-org.apache.pig.test.TestLogToPhyCompiler.txt, 
> TEST-org.apache.pig.test.TestLogToPhyCompiler.txt, 
> TEST-org.apache.pig.test.TestMapReduce.txt, 
> TEST-org.apache.pig.test.TestTypeCheckingValidator.txt, 
> TEST-org.apache.pig.test.TestUnion.txt, translator.patch, translator.patch, 
> translator.patch, translator.patch
>
>
> This bug tracks work to rework all of the physical operators as described in 
> http://wiki.apache.org/pig/PigTypesFunctionalSpec

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