NullPointerException in fairshare PoolManager
---------------------------------------------
Key: HADOOP-5389
URL: https://issues.apache.org/jira/browse/HADOOP-5389
Project: Hadoop Core
Issue Type: Bug
Components: contrib/fair-share
Affects Versions: 0.20.0
Reporter: Nigel Daley
Found this NPE in a Hadoop 0.20.0 JobTracker log:
{code}
2009-03-03 23:55:22,824 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:119)
at
org.apache.hadoop.mapred.FairScheduler.assignTasks(FairScheduler.java:226)
at org.apache.hadoop.mapred.JobTracker.heartbeat(JobTracker.java:2340)
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$Server.call(RPC.java:508)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:959)
at org.apache.hadoop.ipc.Server$Handler$1.run(Server.java:955)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at org.apache.hadoop.ipc.Server$Handler.run(Server.java:953)
{code}
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