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https://issues.apache.org/jira/browse/HAMA-906?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14005882#comment-14005882
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Aguinaldo Pontes commented on HAMA-906:
---------------------------------------

Thanks for the patch.

Tested and working as expected.

> Automatic activation of halted vertices without received messages
> -----------------------------------------------------------------
>
>                 Key: HAMA-906
>                 URL: https://issues.apache.org/jira/browse/HAMA-906
>             Project: Hama
>          Issue Type: Bug
>          Components: graph
>    Affects Versions: 0.6.4
>            Reporter: Aguinaldo Pontes
>              Labels: easyfix
>         Attachments: patch.txt
>
>
> When implementing an algorithm on Apache Hama platform, we noticed that when 
> the first vertex of the split received a message, all the others became 
> activated (being previously halted), even if they didn't receive a message.
> We think that this happens in the line 254 in GraphJobRunner, in the 
> doSuperstep method ( 
> https://github.com/apache/hama/blob/trunk/graph/src/main/java/org/apache/hama/graph/GraphJobRunner.java#L254).
>  We think that in this line it misses the following verification: 
> if(currentMessage!=null && ... )
> Could you confirm?
> Thanks.



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