Andrew Wang created HDFS-5405:
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Summary: Fix possible RetryCache hang for caching RPC handlers in
FSNamesystem
Key: HDFS-5405
URL: https://issues.apache.org/jira/browse/HDFS-5405
Project: Hadoop HDFS
Issue Type: Sub-task
Components: namenode
Affects Versions: HDFS-4949
Reporter: Andrew Wang
Assignee: Andrew Wang
Related to the fix in HDFS-5299, we need to make sure that uncaught exceptions
happen before {{RetryCache.waitForCompletion}}, or badly timed failovers can
lead to a perma-hang.
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