Adding logging to LeaseRenewer for better lease expiration triage.
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Key: HDFS-2803
URL: https://issues.apache.org/jira/browse/HDFS-2803
Project: Hadoop HDFS
Issue Type: Improvement
Reporter: Jimmy Xiang
Priority: Minor
It be helpful to add some logging to LeaseRenewer when the daemon is terminated
(Info level),
and when the lease is renewed (Debug level). Since lacking logging, it will be
hard to know
if a DFS client doesn't renew the lease because it hangs, or the lease renewer
daemon is gone somehow.
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