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From "Aguinaldo Pontes (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HAMA-906) Automatic activation of halted vertices without received messages
Date Wed, 21 May 2014 15:38:38 GMT

     [ https://issues.apache.org/jira/browse/HAMA-906?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Aguinaldo Pontes updated HAMA-906:
----------------------------------

    Description: 
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.

  was:
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 && ... )

Are we right?


> 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
>
> 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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