Kihwal Lee created HDFS-4495:
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             Summary: Allow client-side lease renewal to be retried beyond 
soft-limit
                 Key: HDFS-4495
                 URL: https://issues.apache.org/jira/browse/HDFS-4495
             Project: Hadoop HDFS
          Issue Type: Bug
          Components: hdfs-client
    Affects Versions: 0.23.5, 2.0.3-alpha
            Reporter: Kihwal Lee


The current lease renewal code in DFSClient gives up after several retries, if 
the soft limit exceeds. This causes the client to abort.  Without this self 
destruction behavior, lease renewal can be retried infinitely due to unrelated 
low-level issue and prevent DFSClient and associated Connection from getting 
garbage collected.  

However, giving up at passage of the soft limit has been shown to be too 
fragile; A long GC on namenode or transient network outage can make clients 
fail. We need the self-destruct behavior, but clients should be allowed to 
retry for longer period of time.

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