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From "Naganarasimha G R (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2487) Need to support timeout of AM When no containers are assigned to it for a defined period
Date Tue, 02 Sep 2014 02:39:21 GMT
Naganarasimha G R created YARN-2487:
---------------------------------------

             Summary: Need to support timeout of AM When no containers are assigned to it
for a defined period
                 Key: YARN-2487
                 URL: https://issues.apache.org/jira/browse/YARN-2487
             Project: Hadoop YARN
          Issue Type: Improvement
          Components: resourcemanager
            Reporter: Naganarasimha G R
            Assignee: Naganarasimha G R


 There are some scenarios where AM will not get containers and indefinetely waiting. We faced
one such sceanrio which makes the applications to get hung : 
Consider a cluster setup which has 2 NMS of each 8GB resource,
And 2 applications are launched in the default queue where in each AM is taking 2 GB each.
Each AM is placed in each of the NM. Now each AM is requesting for container of 7Gb  mem resource
.
As in each NM only 6GB resource is available both the applications are hung forever.

To avoid such scenarios i would to propose 
generic timeout feature for all AM's @ the yarn side such that if no containers are assigned
for an application for a defined period than yarn can timeout the application attempt.
Default can be set to 0 where in RM will not timeout the app attempt and user can set his
own timeout when he submits the application



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