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Posted to hdfs-dev@hadoop.apache.org by "Gera Shegalov (JIRA)" <ji...@apache.org> on 2014/04/06 03:39:18 UTC

[jira] [Created] (HDFS-6193) HftpFileSystem open should throw FileNotFoundException for non-existing paths

Gera Shegalov created HDFS-6193:
-----------------------------------

             Summary: HftpFileSystem open should throw FileNotFoundException for non-existing paths
                 Key: HDFS-6193
                 URL: https://issues.apache.org/jira/browse/HDFS-6193
             Project: Hadoop HDFS
          Issue Type: Bug
    Affects Versions: 2.3.0
            Reporter: Gera Shegalov
            Assignee: Gera Shegalov
            Priority: Blocker


WebHdfsFileSystem.open and HftpFileSystem.open incorrectly handles non-existing paths. 
- 'open', does not really open anything, i.e., it does not contact the server, and therefore cannot discover FileNotFound, it's deferred until next read. It's counterintuitive and not how local FS or HDFS work. In POSIX you get ENOENT on open. [LzoInputFormat.getSplits|https://github.com/kevinweil/elephant-bird/blob/master/core/src/main/java/com/twitter/elephantbird/mapreduce/input/LzoInputFormat.java] is an example of the code that's broken because of this.

- On the server side, FileDataServlet incorrectly sends SC_BAD_REQUEST instead of SC_NOT_FOUND for non-exitsing paths





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