Hi, Edward, thank you. But your suggestion seems do not work, do you have some other advice ?
Is java.lang.NullPointerException related with heap size ? 在 2013-4-16，22:13，"Edward J. Yoon" <[email protected]> 写道： > I guess you need to increase the child processor JVM heap size. > > - conf/hama-site.xml: > > <property> > <name>bsp.child.java.opts</name> > <value>-Xmx2048m</value> > </property> > > On Tue, Apr 16, 2013 at 10:55 PM, Lyu Xuedong <[email protected]> wrote: >> My project can work well in eclipse, but when I export it as a jar file and >> submit it to a two-node hama cluster, some errors and fatal occur if the >> input file is over 64M. >> I suspect that my configure files of hadoop or hama is somewhere not right, >> but a pi estimator can run normally on my cluster and >> GroomServer$BSPPerChild can be seen on each nodes. I debug for a whole day, >> nothing improved. >> What in my input file are a large number of RDF triples: "<subject> >> <predicate> <object> ." My task is to create vertices for subjects and >> objects. Predicates are subjects' edges. >> What should I do ? >> >> Terminal output: >> >> 13/04/16 21:13:36 INFO bgp.HamaBgpComplete: Job begain. >> 13/04/16 21:13:37 INFO bsp.FileInputFormat: Total input paths to process : 2 >> 13/04/16 21:13:38 INFO bsp.BSPJobClient: Running job: job_201304161357_0015 >> 13/04/16 21:13:41 INFO bsp.BSPJobClient: Current supersteps number: 0 >> 13/04/16 21:13:47 INFO bsp.BSPJobClient: Current supersteps number: 2 >> 13/04/16 21:13:53 INFO bsp.BSPJobClient: Current supersteps number: 3 >> 13/04/16 21:13:59 INFO bsp.BSPJobClient: Current supersteps number: 4 >> 13/04/16 21:14:05 INFO bsp.BSPJobClient: Current supersteps number: 5 >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO >> sync.ZKSyncClient: Initializing ZK Sync Client >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO >> sync.ZooKeeperSyncClientImpl: Start connecting to Zookeeper! At >> hadoop1/1.2.3.4:61002 >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO ipc.Server: >> Starting SocketReader >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO ipc.Server: IPC >> Server Responder: starting >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO ipc.Server: IPC >> Server handler 0 on 61002: starting >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO >> message.HadoopMessageManagerImpl: BSPPeer address:hadoop1 port:61002 >> attempt_201304161357_0015_000000_0: 13/04/16 21:13:43 INFO ipc.Server: IPC >> Server listener on 61002: starting >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:03 ERROR bsp.BSPTask: >> Error running bsp setup and bsp function. >> attempt_201304161357_0015_000000_0: java.lang.NullPointerException >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 INFO ipc.Server: >> Stopping server on 61002 >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 INFO ipc.Server: IPC >> Server handler 0 on 61002: exiting >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 INFO ipc.Server: >> Stopping IPC Server listener on 61002 >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 INFO ipc.Server: >> Stopping IPC Server Responder >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 INFO >> metrics.RpcInstrumentation: shut down >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 ERROR bsp.BSPTask: >> Shutting down ping service. >> attempt_201304161357_0015_000000_0: 13/04/16 21:14:04 FATAL bsp.GroomServer: >> Error running child >> attempt_201304161357_0015_000000_0: java.lang.NullPointerException >> attempt_201304161357_0015_000000_0: java.lang.NullPointerException >> 13/04/16 21:15:11 INFO bsp.BSPJobClient: Job failed. >> >> tasklogs: >> attempt_201304161357_0015_000000_0.log >> 13/04/16 21:13:43 INFO sync.ZKSyncClient: Initializing ZK Sync Client >> 13/04/16 21:13:43 INFO sync.ZooKeeperSyncClientImpl: Start connecting to >> Zookeeper! At hadoop1/1.2.3.4:61002 >> 13/04/16 21:13:43 INFO ipc.Server: Starting SocketReader >> 13/04/16 21:13:43 INFO ipc.Server: IPC Server Responder: starting >> 13/04/16 21:13:43 INFO ipc.Server: IPC Server handler 0 on 61002: starting >> 13/04/16 21:13:43 INFO message.HadoopMessageManagerImpl: BSPPeer >> address:hadoop1 port:61002 >> 13/04/16 21:13:43 INFO ipc.Server: IPC Server listener on 61002: starting >> 13/04/16 21:14:03 ERROR bsp.BSPTask: Error running bsp setup and bsp >> function. >> java.lang.NullPointerException >> 13/04/16 21:14:04 INFO ipc.Server: Stopping server on 61002 >> 13/04/16 21:14:04 INFO ipc.Server: IPC Server handler 0 on 61002: exiting >> 13/04/16 21:14:04 INFO ipc.Server: Stopping IPC Server listener on 61002 >> 13/04/16 21:14:04 INFO ipc.Server: Stopping IPC Server Responder >> 13/04/16 21:14:04 INFO metrics.RpcInstrumentation: shut down >> 13/04/16 21:14:04 ERROR bsp.BSPTask: Shutting down ping service. >> 13/04/16 21:14:04 FATAL bsp.GroomServer: Error running child >> java.lang.NullPointerException >> java.lang.NullPointerException >> >> attempt_201304161357_0015_000001_0.log >> 13/04/16 21:13:42 INFO sync.ZKSyncClient: Initializing ZK Sync Client >> 13/04/16 21:13:42 INFO sync.ZooKeeperSyncClientImpl: Start connecting to >> Zookeeper! At hadoop1/1.2.3.4:61001 >> 13/04/16 21:13:42 ERROR sync.ZooKeeperSyncClientImpl: >> org.apache.zookeeper.KeeperException$NoNodeException: KeeperErrorCode = >> NoNode for /bsp/job_201304161357_0015/peers >> 13/04/16 21:13:42 INFO ipc.Server: Starting SocketReader >> 13/04/16 21:13:42 INFO ipc.Server: IPC Server Responder: starting >> 13/04/16 21:13:42 INFO message.HadoopMessageManagerImpl: BSPPeer >> address:hadoop1 port:61001 >> 13/04/16 21:13:42 INFO ipc.Server: IPC Server listener on 61001: starting >> 13/04/16 21:13:42 INFO ipc.Server: IPC Server handler 0 on 61001: starting >> 13/04/16 21:14:06 ERROR bsp.BSPPeerImpl: Error while sending messages >> java.io.IOException: Call to hadoop1/1.2.3.4:61002 failed on local >> exception: java.io.EOFException >> at org.apache.hadoop.ipc.Client.wrapException(Client.java:1103) >> at org.apache.hadoop.ipc.Client.call(Client.java:1071) >> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225) >> at $Proxy3.put(Unknown Source) >> at >> org.apache.hama.bsp.message.HadoopMessageManagerImpl.transfer(HadoopMessageManagerImpl.java:108) >> at org.apache.hama.bsp.BSPPeerImpl.sync(BSPPeerImpl.java:410) >> at org.apache.hama.graph.GraphJobRunner.bsp(GraphJobRunner.java:118) >> at org.apache.hama.bsp.BSPTask.runBSP(BSPTask.java:166) >> at org.apache.hama.bsp.BSPTask.run(BSPTask.java:143) >> at >> org.apache.hama.bsp.GroomServer$BSPPeerChild.main(GroomServer.java:1266) >> Caused by: java.io.EOFException >> at java.io.DataInputStream.readInt(DataInputStream.java:375) >> at >> org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:800) >> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:745) > > > > -- > Best Regards, Edward J. Yoon > @eddieyoon
