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https://issues.apache.org/jira/browse/HIVE-9936?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14358339#comment-14358339
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Jason Dere commented on HIVE-9936:
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+1
> fix potential NPE in DefaultUDAFEvaluatorResolver
> -------------------------------------------------
>
> Key: HIVE-9936
> URL: https://issues.apache.org/jira/browse/HIVE-9936
> Project: Hive
> Issue Type: Bug
> Components: UDF
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
> Attachments: HIVE-9936.1.patch
>
>
> In some cases DefaultUDAFEvaluatorResolver calls new
> AmbiguousMethodException(udafClass, null, null) (line 94)
> This will throw NPE because AmbiguousMethodException calls
> argTypeInfos.toString()
> argTypeInfos is the second parameter and it can not be null.
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