Ferenc Erdelyi created YARN-11924:
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Summary: Add zkManager.exists(path) check to
ZKConfigurationStore:getZkData() and retry mechanism
Key: YARN-11924
URL: https://issues.apache.org/jira/browse/YARN-11924
Project: Hadoop YARN
Issue Type: Bug
Reporter: Ferenc Erdelyi
Should a 'yarn resourcemanager -format-state-store' command is issued while one
of the RM is in a starting state, -because of YARN-11551- there is a time
period when the /confstore/CONF_STORE path does not exist, hence the getZkData
method returns a null value, causing the RM to fail. To prevent this, add a
check and re-try mechanism before giving up.
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