Can you give more context?What are the types of messages, patch of your compute method, etc.You will not receive messages that are not sent, but one thing that can happen is-- message can have multiple parameters.suppose message objects can have 2 parametersm - a,bsay in m's write(out) you do not handle the case of b = nullm1 sets bm2 has b=nullthen because of incorrect code for m's write() m2 can show b = m1.bthat is because message objects will be re-used when receiving. This is a Giraph gotcha, because ofobject reuse in most iterators. Thanks
> From: [email protected] > Date: Tue, 23 Sep 2014 10:10:48 -0400 > Subject: receiving messages that I didn't send > To: [email protected] > > Hi Folks. I am refactoring my compute() to use a set of ids as its > message type, and in my tests it is receiving a message that it > absolutely did not send. I've debugged it and am at a loss. > Interestingly, I encountered this once before and solved it by > creating a copy of a Writeable instead of re-using it, but I haven't > been able to solve it this time. In general, does this anomalous > behavior indicate a Giraph/Hadoop gotcha'? It's really confounding! > Thank very much -- matt > > -- > Matthew Cornell | [email protected] | 413-626-3621 | 34 > Dickinson Street, Amherst MA 01002 | matthewcornell.org
