Hello there,
i downloaded hama-trunk a few days ago and till now I am trying to
resolve the following problem that came up:
My program runs without errors without aggregators. When I set the
aggregator class to be used, I have the following error (which is like
"cant find the message class" when the java file exists in the
package!):
corever2 is the package and MessageCore is the name of the class.
java.io.IOException: can't find class: corever2.MessageCore because
corever2.MessageCore
at
org.apache.hadoop.io.AbstractMapWritable.readFields(AbstractMapWritable.java:204)
at org.apache.hadoop.io.MapWritable.readFields(MapWritable.java:146)
at
org.apache.hama.graph.GraphJobMessage.readFields(GraphJobMessage.java:129)
at
org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:108)
at org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:78)
at
org.apache.hama.bsp.LocalBSPRunner$LocalMessageManager.transfer(LocalBSPRunner.java:356)
at org.apache.hama.bsp.BSPPeerImpl.sync(BSPPeerImpl.java:381)
at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:133)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.run(LocalBSPRunner.java:258)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:288)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:212)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
java.io.EOFException
at java.io.DataInputStream.readFully(DataInputStream.java:180)
at org.apache.hadoop.io.Text.readFields(Text.java:265)
at
org.apache.hama.graph.GraphJobMessage.readFields(GraphJobMessage.java:136)
at
org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:108)
at org.apache.hama.bsp.BSPMessageBundle$1.next(BSPMessageBundle.java:78)
at
org.apache.hama.bsp.LocalBSPRunner$LocalMessageManager.transfer(LocalBSPRunner.java:356)
at org.apache.hama.bsp.BSPPeerImpl.sync(BSPPeerImpl.java:381)
at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:133)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.run(LocalBSPRunner.java:258)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:288)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:212)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
14/02/23 18:30:23 ERROR bsp.LocalBSPRunner: Exception during BSP execution!
java.lang.UnsupportedOperationException: Unknown message type:
GraphJobMessage [flag=0, map=null, vertexId=, vertexValue=null]
at
org.apache.hama.graph.GraphJobRunner.parseMessages(GraphJobRunner.java:590)
at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:136)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.run(LocalBSPRunner.java:258)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:288)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:212)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
at java.lang.Thread.run(Thread.java:662)
14/02/23 18:30:23 ERROR bsp.LocalBSPRunner: Exception during BSP execution!
java.util.concurrent.ExecutionException:
java.lang.UnsupportedOperationException: Unknown message type:
GraphJobMessage [flag=0, map=null, vertexId=, vertexValue=null]
at java.util.concurrent.FutureTask$Sync.innerGet(FutureTask.java:222)
at java.util.concurrent.FutureTask.get(FutureTask.java:83)
at
org.apache.hama.bsp.LocalBSPRunner$ThreadObserver.run(LocalBSPRunner.java:315)
at java.lang.Thread.run(Thread.java:662)
Caused by: java.lang.UnsupportedOperationException: Unknown message
type: GraphJobMessage [flag=0, map=null, vertexId=, vertexValue=null]
at
org.apache.hama.graph.GraphJobRunner.parseMessages(GraphJobRunner.java:590)
at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:136)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.run(LocalBSPRunner.java:258)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:288)
at
org.apache.hama.bsp.LocalBSPRunner$BSPRunner.call(LocalBSPRunner.java:212)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:439)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at
java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:895)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:918)
... 1 more
14/02/23 18:30:25 INFO bsp.BSPJobClient: Current supersteps number: 1
14/02/23 18:30:25 INFO bsp.BSPJobClient: Job failed.
The only thing I managed to figure is that this comes up when the
aggregators are enabled.
Thank you.
