lei w created HDFS-17519:
----------------------------

             Summary: LeaseMonitor renew the lease when the last block is in 
the complete state and the penultimate block is in the committed state in ones 
file.
                 Key: HDFS-17519
                 URL: https://issues.apache.org/jira/browse/HDFS-17519
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: lei w


When the last block of the file is in the complete state and the penultimate 
block is in the committed state, LeaseMonitor will continuously check the lease 
of this file. In this case, it is usually because the DN encountered some 
anomalies and did not report to the NN for a long time. So can we renew the 
lease with the LeaseMonitor, and then reduce the number of checks on this lease?



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