[jira] [Commented] (PIG-4315) MergeJoin or Split followed by order by gives NPE in Tez

["Daniel Dai (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/PIG-4315?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14728067#comment-14728067 ] 

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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