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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-6143) HftpFileSystem open should throw FileNotFoundException for non-existing paths
Date Sun, 23 Mar 2014 21:29:43 GMT

     [ https://issues.apache.org/jira/browse/HDFS-6143?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-6143:
----------------------------------

    Summary: HftpFileSystem open should throw FileNotFoundException for non-existing paths
 (was: HftpFileSystem open should through FileNotFoundException for non-existing paths)

> HftpFileSystem open should throw FileNotFoundException for non-existing paths
> -----------------------------------------------------------------------------
>
>                 Key: HDFS-6143
>                 URL: https://issues.apache.org/jira/browse/HDFS-6143
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.3.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>            Priority: Blocker
>         Attachments: HDFS-6143.v01.patch
>
>
> 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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