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From Steve Loughran <ste...@hortonworks.com>
Subject Re: [VOTE] Release hadoop-2.0.3-alpha
Date Mon, 11 Feb 2013 14:44:51 GMT
On 9 February 2013 00:25, Aaron T. Myers <atm@cloudera.com> wrote:

> . When I first tried to start up the RM, it failed to start with
> this error:
>
> And then this on shutdown:
>
> 13/02/08 16:00:31 INFO service.CompositeService: Error stopping
> ResourceManager
> java.lang.NullPointerException
> at
>
> org.apache.hadoop.yarn.server.resourcemanager.ResourceManager.stop(ResourceManager.java:590)
>  at
>
> org.apache.hadoop.yarn.service.CompositeService$CompositeServiceShutdownHook.run(CompositeService.java:122)
> at
>
> org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
>
> Presumably this is because I don't have the CapacityScheduler queues
> configured at all, and the default scheduler is now the CapacityScheduler.
> To work around this for my testing, I switched to the FairScheduler and the
> RM came up just fine.
>
> service is assuming it came up so doesn't check its args in stop().  See

https://issues.apache.org/jira/browse/MAPREDUCE-3502

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