This is a bug. I've created
https://issues.apache.org/jira/browse/GIRAPH-321
Avery
On 9/6/12 2:45 AM, fabrizio silvestri wrote:
Dear all,
please bear with me :) I know I'm asking you tons of stupid questions :)
So, I've finally found a valid pairs of input and output classes. Now,
I've tried to run the following:
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.examples.LongDoubleFloatDoubleTextInputFormat
-ip graph.txt
-of org.apache.giraph.examples.VertexWithDoubleValueFloatEdgeTextOutputFormat
-op output
where graph.txt has the following content:
1 2:1.0 3:1.0 4:1.0
2 1:1.0 3:1.0
3 1:1.0
4 1:1.0 3:1.0
One of the mappers gives throws a divbyzero exception.
java.lang.ArithmeticException: / by zero
at
org.apache.giraph.graph.LocalityInfoSorter.prioritizeLocalInputSplits(LocalityInfoSorter.java:107)
at
org.apache.giraph.graph.LocalityInfoSorter.<init>(LocalityInfoSorter.java:71)
at
org.apache.giraph.graph.BspServiceWorker.reserveInputSplit(BspServiceWorker.java:228)
at
org.apache.giraph.graph.BspServiceWorker.loadVertices(BspServiceWorker.java:317)
at
org.apache.giraph.graph.BspServiceWorker.setup(BspServiceWorker.java:604)
at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:368)
at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:569)
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)
Cheers
f
