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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