Setting
conf.set("yarn.resourcemanager.connect.max-wait.ms", "500");
conf.set("yarn.resourcemanager.connect.retry-interval.ms", "500");
still results in a wait of around 15 seconds. Setting this:
conf.set("ipc.client.connect.max.retries", "2");
Also does not help. Is there a retry parameter that can be set?
Thanks
John
From: John Lilley [mailto:john.lil...@redpoint.net]
Sent: Monday, February 10, 2014 12:12 PM
To: user@hadoop.apache.org
Subject: RE: very long timeout on failed RM connect
I tried:
conf.set("yarn.resourcemanager.connect.max-wait.ms", "10000");
conf.set("yarn.resourcemanager.connect.retry-interval.ms", "1000");
But it has no apparent effect. Still hangs for a very long time.
john
From: Jian He [mailto:j...@hortonworks.com]
Sent: Monday, February 10, 2014 11:05 AM
To: user@hadoop.apache.org<mailto:user@hadoop.apache.org>
Subject: Re: very long timeout on failed RM connect
Setting the following two properties may solve your problem.
yarn.resourcemanager.connect.max-wait.ms<http://yarn.resourcemanager.connect.max-wait.ms/>
controls Maximum time to wait to establish connection to ResourceManager.
yarn.resourcemanager.connect.retry-interval.ms<http://yarn.resourcemanager.connect.retry-interval.ms/>
controls How often to try connecting to the ResourceManager.
Jian
On Mon, Feb 10, 2014 at 6:44 AM, John Lilley
<john.lil...@redpoint.net<mailto:john.lil...@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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