Todd Lipcon created HDFS-4324:
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             Summary: Track and report out-of-date blocks separately from 
corrupt blocks
                 Key: HDFS-4324
                 URL: https://issues.apache.org/jira/browse/HDFS-4324
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: namenode
    Affects Versions: 3.0.0
            Reporter: Todd Lipcon


Currently in various places (metrics, dfsadmin -report, fsck, logs) we use the 
term "corrupt" to refer to blocks which have an out-of-date generation stamp. 
Since out-of-date blocks are a fairly normal occurrence if a DN restarts while 
data is being written, we should be avoid using 'scary' works like _corrupt_. 
This may need both some textual changes as well as some internal changes to 
count the corruption types distinctly.

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