Hi, I'm currently implementing an algorithm for diameter and radius estimation. It already works when I run it on toy data via InternalVertexRunner in a unit test.
Unfortunately, in my tests with a single node hadoop instance and real cluster, I always run into the attached exception during startup. Does anybody have an idea what might cause this? --sebastian 2011-12-23 10:43:09,769 INFO org.apache.hadoop.mapred.TaskInProgress: Error from attempt_201112230924_0006_m_000001_0: java.lang.IllegalStateException: run: Caught an unrecoverable exception setup: Offlining servers due to exception... at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:641) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:763) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:369) at org.apache.hadoop.mapred.Child$4.run(Child.java:259) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1059) at org.apache.hadoop.mapred.Child.main(Child.java:253) Caused by: java.lang.RuntimeException: setup: Offlining servers due to exception... at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:466) at org.apache.giraph.graph.GraphMapper.run(GraphMapper.java:630) ... 7 more Caused by: java.lang.IllegalStateException: setup: loadVertices failed at org.apache.giraph.graph.BspServiceWorker.setup(BspServiceWorker.java:582) at org.apache.giraph.graph.GraphMapper.setup(GraphMapper.java:458) ... 8 more Caused by: java.lang.RuntimeException: java.io.IOException: Call to poodle-6/127.0.1.1:30002 failed on local exception: java.io.EOFException at org.apache.giraph.comm.BasicRPCCommunications.sendPartitionReq(BasicRPCCommunications.java:768) at org.apache.giraph.graph.BspServiceWorker.loadVertices(BspServiceWorker.java:304) at org.apache.giraph.graph.BspServiceWorker.setup(BspServiceWorker.java:575) ... 9 more Caused by: java.io.IOException: Call to poodle-6/127.0.1.1:30002 failed on local exception: java.io.EOFException at org.apache.hadoop.ipc.Client.wrapException(Client.java:1065) at org.apache.hadoop.ipc.Client.call(Client.java:1033) at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:224) at $Proxy3.putVertexList(Unknown Source) at org.apache.giraph.comm.BasicRPCCommunications.sendPartitionReq(BasicRPCCommunications.java:765) ... 11 more Caused by: java.io.EOFException at java.io.DataInputStream.readInt(DataInputStream.java:375) at org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:767) at org.apache.hadoop.ipc.Client$Connection.run(Client.java:712)