Karthik Kambatla created YARN-1641:
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Summary: ZK store - periodically create a dummy file to kick in
fencing
Key: YARN-1641
URL: https://issues.apache.org/jira/browse/YARN-1641
Project: Hadoop YARN
Issue Type: Sub-task
Components: resourcemanager
Affects Versions: 2.4.0
Reporter: Karthik Kambatla
Assignee: Karthik Kambatla
Fencing in ZK store kicks in when the RM tries to write something to the store.
If the RM doesn't write anything to the store, it doesn't get fenced and can
continue to assume being the Active.
By periodically writing a file (say, every RM_ZK_TIMEOUT_MS seconds), we can
ensure it gets fenced.
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