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https://issues.apache.org/jira/browse/PIG-4766?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15070800#comment-15070800
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Pallavi Rao commented on PIG-4766:
----------------------------------
With this patch, all tests in TestCombiner pass.
Couple of call outs:
1. The patch modifies PORelationToExprProject (changes are in-line with what is
there on trunk).
2. Makes SelfSpillBag$MemoryLimits serializable
3. Modifies TestCombiner as follows. Couldn't think of a better alternative as
the spark optimizer does not generate a separate combine plan.
{code}
if
(pigServer.getPigContext().getExecType().name().equalsIgnoreCase("spark")) {
combinerFound = baos.toString().contains("Reduce By");
} else {
combinerFound = baos.toString().matches("(?si).*combine plan.*");
}
{code}
> Ensure GroupBy is optimized for all algebraic Operations
> --------------------------------------------------------
>
> Key: PIG-4766
> URL: https://issues.apache.org/jira/browse/PIG-4766
> Project: Pig
> Issue Type: Sub-task
> Components: spark
> Reporter: Pallavi Rao
> Assignee: Pallavi Rao
> Labels: spork
> Fix For: spark-branch
>
> Attachments: PIG-4766.patch
>
>
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