[jira] [Created] (YARN-5711) AM cannot reconnect to RM after failover when using RequestHedgingRMFailoverProxyProvider

["Subru Krishnan (JIRA)" <ji...@apache.org>]

Subru Krishnan created YARN-5711:
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             Summary: AM cannot reconnect to RM after failover when using RequestHedgingRMFailoverProxyProvider
                 Key: YARN-5711
                 URL: https://issues.apache.org/jira/browse/YARN-5711
             Project: Hadoop YARN
          Issue Type: Bug
          Components: applications, resourcemanager
    Affects Versions: 3.0.0-alpha1, 2.9.0
            Reporter: Subru Krishnan
            Priority: Critical


When RM failsover, it does _not_ auto re-register running apps and so they need to re-register when reconnecting to new primary. This is done by catching {{ApplicationMasterNotRegisteredException}} in *allocate* calls and re-registering. But *RequestHedgingRMFailoverProxyProvider* does _not_ propagate {{YarnException}} as the actual invocation is done asynchronously using seperate threads.

This JIRA proposes that the *RequestHedgingRMFailoverProxyProvider* propagate any {{YarnException}} that it encounters.



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