[
https://issues.apache.org/jira/browse/HADOOP-5389?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12683693#action_12683693
]
Matei Zaharia commented on HADOOP-5389:
---------------------------------------
When this happens, there are no minimum shares and weights configured for
pools. It is as if you had an empty allocation file. If you'd prefer to just
prevent the JT from running if there's no config file, we can throw a
RuntimeException.
> 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
> Assignee: Vinod K V
>
> 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}
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
