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https://issues.apache.org/jira/browse/PIG-162?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12605309#action_12605309
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Alan Gates commented on PIG-162:
--------------------------------
We want to pull all the standard aggregate functions into the grammar. The
reason is for overloading. We don't have a way right now to overload UDFs by
argument type. But for SUM, MIN, MAX it will be much more efficient if we can
know the type up front (summing a long vs a float). So we want to make them
native operators.
> Rework mapreduce submission and monitoring
> ------------------------------------------
>
> Key: PIG-162
> URL: https://issues.apache.org/jira/browse/PIG-162
> Project: Pig
> Issue Type: Sub-task
> Environment: This bug tracks works to rework the submission and
> monitoring interface to map reduce as described in
> http://wiki.apache.org/pig/PigTypesFunctionalSpec
> Reporter: Alan Gates
> Assignee: Alan Gates
> Attachments: changes.patch, changes1.patch, incr7.patch, incr8.patch,
> mapreduceJumbo.patch, mapreduceJumboWithComInc.patch, modJumbo.patch,
> newChanges.patch, split.png, TEST-org.apache.pig.test.TestMapReduce.txt,
> TEST-org.apache.pig.test.TestMRCompiler.txt,
> TEST-org.apache.pig.test.TestMRCompiler.txt,
> TEST-org.apache.pig.test.TestUnion.txt
>
>
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