Hi all,
Im trying to register a persistent aggregator and am getting a NPE:
version: Giraph 1.0 running against hadoop 1
java.lang.NullPointerException
at
org.apache.giraph.master.MasterCompute.registerPersistentAggregator(MasterCompute.java:152)
class ReflexivePairMasterCompute extends DefaultMasterCompute {
registerPersistentAggregator[LongArrayListWriteable]("reflexive_edges",
classOf[LongArrayListAggregator])
registerPersistentAggregator[LongArrayListWriteable]("non_reflexive_edges",
classOf[LongArrayListAggregator]
}
Any ideas? It looks like it’s having issues with the following line, which
leads me to wonder if I need to do something to init the graph state:
return getGraphState().getGraphTaskManager().getMasterAggregatorUsage().
registerPersistentAggregator(name, aggregatorClass);
--
Artie Pesh-Imam
Software Engineer @ Tapad
201-253-9647
