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https://issues.apache.org/jira/browse/PIG-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14728067#comment-14728067
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Daniel Dai commented on PIG-4315:
---------------------------------
+1
> MergeJoin or Split followed by order by gives NPE in Tez
> --------------------------------------------------------
>
> Key: PIG-4315
> URL: https://issues.apache.org/jira/browse/PIG-4315
> Project: Pig
> Issue Type: Bug
> Components: tez
> Reporter: Rohini Palaniswamy
> Assignee: Rohini Palaniswamy
> Fix For: 0.16.0
>
> Attachments: PIG-4315-1.patch
>
>
> TestHBaseStorage.testMergeJoin() fails. connectingLR is null in
> CombinerOptimizer and throws NPE in
> {code}
> from.plan.getOperator(connectingLR.getOperatorKey())
> {code}
> When splitting DAGs and doing moveTree TezCompilerUtil.connect() overwrites
> the output key of sampler LocalRearrange to the partitioner vertex.
> Split followed by orderby also had issues using the same
> TezCompilerUtil.connect() method.
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