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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6193) HftpFileSystem open should throw FileNotFoundException for non-existing paths
Date Mon, 07 Apr 2014 05:04:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6193?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13961646#comment-13961646
] 

Hadoop QA commented on HDFS-6193:
---------------------------------

{color:red}-1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12638942/HDFS-6193-branch-2.4.0.v01.patch
  against trunk revision .

    {color:red}-1 patch{color}.  The patch command could not apply the patch.

Console output: https://builds.apache.org/job/PreCommit-HDFS-Build/6598//console

This message is automatically generated.

> 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: 2.4.0
>            Reporter: Gera Shegalov
>            Assignee: Gera Shegalov
>            Priority: Blocker
>         Attachments: HDFS-6193-branch-2.4.0.v01.patch
>
>
> 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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