[HAMA-906] Automatic activation of halted vertices without received messages

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.6.4
• Component/s: graph
• Labels: easyfix
• Assignee: Edward J. Yoon
• Reporter: Aguinaldo Pontes
• Created: 21/May/14 15:21
• Updated: 27/May/14 00:28
• Resolved: 22/May/14 21:32

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.