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From "Ravi Prakash (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3794) WebHDFS Open used with Offset returns the original (and incorrect) Content Length in the HTTP Header.
Date Tue, 14 Aug 2012 15:23:38 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3794?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Ravi Prakash updated HDFS-3794:
-------------------------------

    Attachment: HDFS-3794.patch

Thanks a lot Nicholas! I'm afraid I don't know enough about the code. I'll defer to you on
this! I'm attaching the modified patch with the change you suggested.

Thanks Daryn. It discovers an out of range offset and throws an exception before reaching
this method. 
{noformat}
$ curl -L "http://HOST:PORT/webhdfs/v1/somePath/someFile?op=OPEN&offset=457236547" 
{"RemoteException":{"exception":"IOException","javaClassName":"java.io.IOException","message":"Offset=457236547
out of the range [0, 457236477); OPEN, path=/somePath/someFile"}}
{noformat}
                
> WebHDFS Open used with Offset returns the original (and incorrect) Content Length in
the HTTP Header.
> -----------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-3794
>                 URL: https://issues.apache.org/jira/browse/HDFS-3794
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 0.23.3, 2.0.0-alpha, 2.1.0-alpha
>            Reporter: Ravi Prakash
>            Assignee: Ravi Prakash
>         Attachments: HDFS-3794.patch, HDFS-3794.patch
>
>
> When an offset is specified, the HTTP header Content Length still contains the original
file size. e.g. if the original file is 100 bytes, and the offset specified it 10, then HTTP
Content Length ought to be 90. Currently it is still returned as 100.
> This causes curl to give error 18, and JAVA to throw ConnectionClosedException

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