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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-5546) race condition crashes "hadoop ls -R" when directories are moved/removed
Date Thu, 21 Nov 2013 19:35:35 GMT
Colin Patrick McCabe created HDFS-5546:
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             Summary: race condition crashes "hadoop ls -R" when directories are moved/removed
                 Key: HDFS-5546
                 URL: https://issues.apache.org/jira/browse/HDFS-5546
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.2.0
            Reporter: Colin Patrick McCabe
            Priority: Minor


This seems to be a rare race condition where we have a sequence of events like this:
1. org.apache.hadoop.shell.Ls calls DFS#getFileStatus on directory D.
2. someone deletes or moves directory D
3. org.apache.hadoop.shell.Ls calls PathData#getDirectoryContents(D), which calls DFS#listStatus(D).
This throws FileNotFoundException.
4. ls command terminates with FNF



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