The NN should log "missing" blocks
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                 Key: HDFS-3141
                 URL: https://issues.apache.org/jira/browse/HDFS-3141
             Project: Hadoop HDFS
          Issue Type: Improvement
            Reporter: Eli Collins
            Assignee: Eli Collins


It would be help debugging if the NN logged at info level and "missing" blocks. 
In v1 missing means  there are no live / decommissioned replicas (ie they're 
all excess or corrupt), in trunk it means all replicas of the block are corrupt.

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