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From Jian He <...@hortonworks.com>
Subject Re: very long timeout on failed RM connect
Date Mon, 10 Feb 2014 18:05:21 GMT
Setting the following two properties may solve your problem.

yarn.resourcemanager.connect.max-wait.ms controls Maximum time to wait to
establish connection to ResourceManager.

yarn.resourcemanager.connect.retry-interval.ms controls How often to try
connecting to the ResourceManager.


On Mon, Feb 10, 2014 at 6:44 AM, John Lilley <john.lilley@redpoint.net>wrote:

>  Our application (running outside the Hadoop cluster) connects to the RM
> through YarnClient.  This works fine, except we've found that if the RM
> address or port is misconfigured in our software, or a firewall blocks
> access, the first call into the client (in this case getNodeReports) hangs
> for a very long time.  I've tried
>                 conf.set("ipc.client.connect.max.retries", "2");
> But this doesn't help.  Is there a configuration setting I can make on the
> YarnClient that will reduce this hang time?
> I understand why this long-winded retry strategy exists, in order to
> prevent a highly-loaded cluster from failing jobs.  But it is not
> appropriate for an interactive application.
> Thanks
> John

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