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Posted to hdfs-dev@hadoop.apache.org by "Kihwal Lee (JIRA)" <ji...@apache.org> on 2013/07/15 17:34:49 UTC

[jira] [Created] (HDFS-4993) fsck can fail if a file is renamed or deleted

Kihwal Lee created HDFS-4993:
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             Summary: fsck can fail if a file is renamed or deleted
                 Key: HDFS-4993
                 URL: https://issues.apache.org/jira/browse/HDFS-4993
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.23.9, 2.1.0-beta
            Reporter: Kihwal Lee


In NamenodeFsck#check(), the getListing() and getBlockLocations() are not synchronized, so the file deletions or renames at the right moment can cause FileNotFoundException and failure of fsck.

Instead of failing, fsck should continue. Optionally it can record file system modifications it encountered, but since most modifications during fsck are not detected, there might be little value in recording these specifically.

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