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https://issues.apache.org/jira/browse/TEZ-3970?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16542276#comment-16542276
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Kuhu Shukla commented on TEZ-3970:
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+1. lgtm.

> NullPointerException in Tez ShuffleHandler Ranged Fetch
> -------------------------------------------------------
>
>                 Key: TEZ-3970
>                 URL: https://issues.apache.org/jira/browse/TEZ-3970
>             Project: Apache Tez
>          Issue Type: Bug
>            Reporter: Jonathan Eagles
>            Assignee: Jonathan Eagles
>            Priority: Major
>         Attachments: TEZ-3970.001.patch
>
>
> TEZ-3954 introduce a NullPointerException by removing the map id from the 
> outputInfo before subsequent partition heads are fetched. Patch moved the 
> cleanup to after the loop to prevent NPE and further more adds Unit Tests 
> that verify correct behavior of ranged fetch.



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