[infinispan-issues] [JBoss JIRA] (ISPN-2353) Allow KOut/VOut emitting Mapper where VOut is null

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-2353?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12783024#comment-12783024 ] 

Galder Zamarreño commented on ISPN-2353:
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I've tried to replicate the issue in this test [1], but no luck so far. I've replied to Matej to see if the issue is still present.

[1] https://github.com/galderz/infinispan/commit/77beb0925f0afc154f10b6137ab29742a8c3bce8
                
> Allow KOut/VOut emitting Mapper where VOut is null
> --------------------------------------------------
>
>                 Key: ISPN-2353
>                 URL: https://issues.jboss.org/browse/ISPN-2353
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Distributed Execution and Map/Reduce
>    Affects Versions: 5.2.0.Alpha4
>            Reporter: Vladimir Blagojevic
>            Assignee: Galder Zamarreño
>             Fix For: 5.3.0.Final
>
>
> In some cases Mapper being executed on remote nodes might produce intermediate KOut/VOut pairs where VOut is null. Should allow/account for that possibility? Currently such tasks fail with NPE. 

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