Hey everyone, I've got supplied with a decent ten node CDH 4.4 cluster, only 7 days old, and someone tried some HBase stuff on it. Now I wanted to try some MR Stuff on it, but starting a Job is already not possible (even the wordcount example). The error log of the jobtracker produces a log 700k lines long but it consists mainly of these lines repeatedly:
2013-10-11 10:24:53,033 INFO org.apache.hadoop.mapred.JobTracker: Lost tracker 'tracker_z-asanode02:localhost/127.0.0.1:53712' 2013-10-11 10:24:53,033 ERROR org.apache.hadoop.security.UserGroupInformation: PriviledgedActionException as:mapred (auth:SIMPLE) cause:java.io.IOException: java.lang.NullPointerException 2013-10-11 10:24:53,034 INFO org.apache.hadoop.ipc.Server: IPC Server handler 22 on 8021, call heartbeat(org.apache.hadoop.mapred.TaskTrackerStatus@13b31acd, true, true, true, -1), rpc version=2, client version=32, methodsFingerPrint=-159967141 from 10.160.25.250:44389: error: java.io.IOException: java.lang.NullPointerException java.io.IOException: java.lang.NullPointerException at org.apache.hadoop.mapred.JobTracker.resolveAndAddToTopology(JobTracker.java:2751) at org.apache.hadoop.mapred.JobTracker.addNewTracker(JobTracker.java:2731) at org.apache.hadoop.mapred.JobTracker.processHeartbeat(JobTracker.java:3227) at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2931) at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.ipc.WritableRpcEngine$Server$WritableRpcInvoker.call(WritableRpcEngine.java:474) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1751) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1747) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1745) 2013-10-11 10:24:53,035 WARN org.apache.hadoop.net.ScriptBasedMapping: Exception running /run/cloudera-scm-agent/process/556-mapreduce-JOBTRACKER/topology.py 10.160.25.249 java.io.IOException: Cannot run program "/run/cloudera-scm-agent/process/556-mapreduce-JOBTRACKER/topology.py" (in directory "/run/cloudera-scm-agent/process/556-mapreduce-JOBTRACKER"): java.io.IOException: error=13, Permission denied at java.lang.ProcessBuilder.start(ProcessBuilder.java:460) at org.apache.hadoop.util.Shell.runCommand(Shell.java:206) at org.apache.hadoop.util.Shell.run(Shell.java:188) at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:381) at org.apache.hadoop.net.ScriptBasedMapping$RawScriptBasedMapping.runResolveCommand(ScriptBasedMapping.java:242) at org.apache.hadoop.net.ScriptBasedMapping$RawScriptBasedMapping.resolve(ScriptBasedMapping.java:180) at org.apache.hadoop.net.CachedDNSToSwitchMapping.resolve(CachedDNSToSwitchMapping.java:119) at org.apache.hadoop.mapred.JobTracker.resolveAndAddToTopology(JobTracker.java:2750) at org.apache.hadoop.mapred.JobTracker.addNewTracker(JobTracker.java:2731) at org.apache.hadoop.mapred.JobTracker.processHeartbeat(JobTracker.java:3227) at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2931) at sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.ipc.WritableRpcEngine$Server$WritableRpcInvoker.call(WritableRpcEngine.java:474) at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:1002) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1751) at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:1747) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1408) at org.apache.hadoop.ipc.Server$Handler.run(Server.java:1745) Caused by: java.io.IOException: java.io.IOException: error=13, Permission denied at java.lang.UNIXProcess.<init>(UNIXProcess.java:148) at java.lang.ProcessImpl.start(ProcessImpl.java:65) at java.lang.ProcessBuilder.start(ProcessBuilder.java:453) ... 21 more it doesn't matter if it is a pure hadoop job or a oozie submitted job. there seems to be something wrong in the basic configuration. Anyone an idea? Cheers Wolli
