Chris Nauroth created HDFS-5385:
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Summary: Caching RPCs are AtMostOnce, but do not persist client ID
and call ID to edit log.
Key: HDFS-5385
URL: https://issues.apache.org/jira/browse/HDFS-5385
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: HDFS-4949
Reporter: Chris Nauroth
All of the new caching RPCs defined on {{ClientProtocol}} are annotated
{{@AtMostOnce}}. However, their underlying edit log operations do not persist
the RPC client ID and call ID. In the event of an HA failover, the new primary
will not be able to guarantee at-most-once semantics if the clients retry.
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