[HAMA-857] Graph Combiners is wrongly implemented

• Type: Bug
• Status: Resolved
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.6.3
• Fix Version/s: 0.7.0
• Component/s: graph
• Assignee: Edward J. Yoon
• Reporter: Edward J. Yoon
• Created: 21/Jan/14 08:34
• Updated: 14/Feb/14 08:02
• Resolved: 14/Feb/14 08:02

Description

Current implementation combines the already received messages.

          if (combiner != null) {
            M combined = combiner.combine(iterable);
            vertex.compute(Collections.singleton(combined));
          } else {
            vertex.compute(iterable);
          }

Messages should be combined before sending to another vertex.