Hello everyone,
A little while ago, there was this thread Puneet started:
http://mail-archives.apache.org/mod_mbox/giraph-user/201411.mbox/%3C1540761704.525265.1416119825974.JavaMail.yahoo%40jws10738.mail.gq1.yahoo.com%3E
Unfortunately, it is not helping me. What I encounter is this:
I have a custom MasterCompute class that overrides the initialize method as
such:
@Override
public void initialize() throws InstantiationException,
IllegalAccessException {
registerPersistentAggregator(COMPUTATION_PHASE_AGGREGATOR,
IntOverwriteAggregator.class);
}
where COMPUTATION_PHASE_AGGREGATOR is a String constant. Then, inside the
compute method of my MasterCompute class I change the value of this
aggregator with the statement:
if (getSuperstep() == 0) {
setAggregatedValue(COMPUTATION_PHASE_AGGREGATOR, new IntWritable(-1));
}
As a result, in the following supersteps I expect the value of this
aggregator to be -1. But when I print the value using a logger, it's 0. I
experimented a bit, calling the setAggregatedValue() method in many places,
and I came to the conclusion that after each superstep it resets to 0.
Which does not make sense to me, because of the whole point of a persistent
aggregator.
I am using giraph v1.1.0-hadoop2. I appreciate any help.
Regards,
Panagiotis Eustratiadis.
