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Posted to hdfs-dev@hadoop.apache.org by "John George (JIRA)" <ji...@apache.org> on 2011/04/18 20:41:11 UTC

[jira] [Created] (HDFS-1845) symlink comes up as directory after namenode restart

symlink comes up as directory after namenode restart
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                 Key: HDFS-1845
                 URL: https://issues.apache.org/jira/browse/HDFS-1845
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 0.22.0
            Reporter: John George
            Assignee: John George


When a symlink is first created, it get added to EditLogs. When namenode is restarted, it reads from this editlog and represents a symlink correctly and saves this information to its image. If the namenode is restarted again, it reads its from this FSImage, but thinks that a symlink is a directory. This is because it uses "Block[] blocks" to determine if an INode is a directory, a file, or symlink. Since both a directory and a symlink has blocks as null, it thinks that a symlink is a directory.

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