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From "Bibin A Chundatt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-4254) ApplicationAttempt stuck for ever due to UnknowHostexception
Date Mon, 12 Oct 2015 06:43:05 GMT
Bibin A Chundatt created YARN-4254:

             Summary: ApplicationAttempt stuck for ever due to UnknowHostexception
                 Key: YARN-4254
                 URL: https://issues.apache.org/jira/browse/YARN-4254
             Project: Hadoop YARN
          Issue Type: Bug
            Reporter: Bibin A Chundatt
            Assignee: Bibin A Chundatt

1. RM HA and 5 NMs available in cluster and are working fine 
2. Add one more NM to the same cluster but RM /etc/hosts not updated.
3. Submit application to the same cluster

If Am get allocated to the newly added NM the *application attempt will get stuck for ever*.User
will not get to know why the same happened.


1.RM logs gets overloaded with exception
2.Application gets stuck for ever.

Handling suggestion YARN-261 allows for Fail application attempt .
If we fail the same next attempt could get assigned to another NM.

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