Botong Huang created YARN-8760:
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Summary: Fix concurrent re-register due to YarnRM failover in
AMRMClientRelayer
Key: YARN-8760
URL: https://issues.apache.org/jira/browse/YARN-8760
Project: Hadoop YARN
Issue Type: Task
Reporter: Botong Huang
Assignee: Botong Huang
When home YarnRM is failing over, FinishApplicationMaster call from AM can have
multiple retry threads outstanding in FederationInterceptor. When new YarnRM
come back up, all retry threads will re-register to YarnRM. The first one will
succeed but the rest will get "Application Master is already registered"
exception. We should catch and swallow this exception and move on.
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