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Matei Zaharia commented on MAPREDUCE-2307: ------------------------------------------ Oh OK, got it. This looks good then. I will commit it if there are no other comments. > Exception thrown in Jobtracker logs, when the Scheduler configured is > FairScheduler. > ------------------------------------------------------------------------------------ > > Key: MAPREDUCE-2307 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-2307 > Project: Hadoop Map/Reduce > Issue Type: Bug > Components: contrib/fair-share > Affects Versions: 0.23.0 > Reporter: Devaraj K > Priority: Minor > Fix For: 0.23.0 > > Attachments: MAPREDUCE-2307.patch > > > If we try to start the job tracker with fair scheduler using the default > configuration, It is giving the below exception. > {code:xml} > 2010-07-03 10:18:27,142 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 2 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 3 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 4 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 5 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 6 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 7 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 8 on 9001: starting > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.mapred.JobTracker: Starting > RUNNING > 2010-07-03 10:18:27,143 INFO org.apache.hadoop.ipc.Server: IPC Server handler > 9 on 9001: starting > 2010-07-03 10:18:28,037 INFO org.apache.hadoop.net.NetworkTopology: Adding a > new node: /default-rack/linux172.site > 2010-07-03 10:18:28,090 INFO org.apache.hadoop.net.NetworkTopology: Adding a > new node: /default-rack/linux177.site > 2010-07-03 10:18:40,074 ERROR org.apache.hadoop.mapred.PoolManager: Failed to > reload allocations file - will use existing allocations. > java.lang.NullPointerException > at java.io.File.<init>(File.java:222) > at > org.apache.hadoop.mapred.PoolManager.reloadAllocsIfNecessary(PoolManager.java:127) > at org.apache.hadoop.mapred.FairScheduler.assignTasks(FairScheduler.java:234) > at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2785) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > at > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > at java.lang.reflect.Method.invoke(Method.java:597) > at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:513) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:984) > at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:980) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Subject.java:396) > at org.apache.hadoop.ipc.Server$Handler.run(Server.java:978) > {code} -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira