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From "Rohith Sharma K S (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-7163) RM crashes with OOM in secured cluster when HA is enabled
Date Wed, 06 Sep 2017 15:15:00 GMT

     [ https://issues.apache.org/jira/browse/YARN-7163?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Rohith Sharma K S updated YARN-7163:
    Attachment: YARN-7163.01.patch

Updating the patch for keeping RM reference in RMDelegationTokenSecretManager rather than
RMContext. This always points to new rmcontext which got created during stand by transition
so that old rmcontext will be GC ed.

> RM crashes with OOM in secured cluster when HA is enabled
> ---------------------------------------------------------
>                 Key: YARN-7163
>                 URL: https://issues.apache.org/jira/browse/YARN-7163
>             Project: Hadoop YARN
>          Issue Type: Bug
>          Components: resourcemanager
>            Reporter: Rohith Sharma K S
>            Assignee: Rohith Sharma K S
>         Attachments: YARN-7163.01.patch
> It is observed that RM crashes with heap space OOM in secure cluster(http authentication
is kerborse) when RM HA is enabled. 
> Scenario is 
> 1. Start RM in HA secure mode. Lets say RM1 is active mode.
> 2. Run many applications so that it uses greater than 50% of heap space configured. Lets
say, if heap space is 2GB, then run applications that occupy 1.5GB of heap space. 
> 3. Switch RM to StandBy and bring back to Active! While recovering applications from
state store, RM crashes with OOM. 
> *Note* : This issue will happen only when RM is started as ACTIVE directly. (not switched
from standby to active during start of JVM)
> Heap dump shows that RMAuthenticationFilter holds 60% heap space! And other 40% held
by RMAppState which is during recovering from state store. This exceeds the heap space and
crashes with OOM. 

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