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https://issues.apache.org/jira/browse/PIG-4456?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14354302#comment-14354302
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Xuefu Zhang commented on PIG-4456:
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FYI, PIG-4374 has been committed.
> Sort the leaves by SparkOperator.operatorKey in SparkLauncher#sparkOperToRDD
> ----------------------------------------------------------------------------
>
> Key: PIG-4456
> URL: https://issues.apache.org/jira/browse/PIG-4456
> Project: Pig
> Issue Type: Sub-task
> Components: spark
> Reporter: liyunzhang_intel
> Assignee: liyunzhang_intel
> Attachments: PIG-4456.patch
>
>
> Sort the leaves by SparkOperator.operatorKey to guarantee that sparkOperator
> with smaller operatorKey is executed before those with larger operatorKey if
> both are the leaves of spark plan, for example, sparkOperator(scope-65) and
> sparkOperator(scope-67) are all leaves of spark plan. SparkOperator(scope-65)
> should be executed before sparkOperator(scope-67) because the output of
> scope-65 maybe is used by scope-67.
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