Dear all,
I'm slowly getting there :)
The bug we found yesterday has been fixed. Now, I'm running into another issue.
If I run SimplePageRank using this command line:
hadoop jar giraph-0.2-SNAPSHOT-for-hadoop-0.20.203.0-jar-with-dependencies.jar
org.apache.giraph.GiraphRunner \
org.apache.giraph.examples.SimplePageRankVertex -w 1 \
-if org.apache.giraph.io.LongDoubleFloatDoubleTextInputFormat -ip graph.txt \
-of org.apache.giraph.io.IdWithValueTextOutputFormat -op output
where graph.txt contains:
1 1.0 2 1.0 3 1.0 4 1.0
2 1.0 3 1.0 4 1.0
3 1.0 1 1.0 4 1.0
4 1.0 1 1.0 2 1.0 3 1.0
(Yes, we crafted a IF class to read this file :) )
>From the job monitor I can see that one of the tasks throws this exception:
java.lang.IllegalStateException: aggregate: Tried to aggregate value
to unregistered aggregator max
at
org.apache.giraph.graph.BspServiceWorker.aggregate(BspServiceWorker.java:703)
at org.apache.giraph.graph.Vertex.aggregate(Vertex.java:319)
at
org.apache.giraph.examples.SimplePageRankVertex.compute(SimplePageRankVertex.java:77)
at org.apache.giraph.graph.GraphMapper.map(GraphMapper.java:507)
at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:571)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:764)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
This is, indeed, strange as in SimplePageRankVertex.java I can see
that max has been in fact registered:
Any help will be much appreciated
f
