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From "Robert Joseph Evans (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-3577) WebHdfsFileSystem can not read files larger than 24KB
Date Mon, 16 Jul 2012 16:00:46 GMT

     [ https://issues.apache.org/jira/browse/HDFS-3577?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Robert Joseph Evans updated HDFS-3577:
--------------------------------------

     Target Version/s: 1.1.0, 0.23.3, 2.1.0-alpha  (was: 1.1.0, 2.1.0-alpha)
    Affects Version/s: 0.23.3

This impacts branch-0.23 as well.  I really would like to see whatever fix happens go into
branch-0.23 as well.  I applied the latest patch and it looks to apply fairly cleanly.  If
it does not apply cleanly when checking in the file fix I will be happy to port it.
                
> WebHdfsFileSystem can not read files larger than 24KB
> -----------------------------------------------------
>
>                 Key: HDFS-3577
>                 URL: https://issues.apache.org/jira/browse/HDFS-3577
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: hdfs client
>    Affects Versions: 0.23.3, 2.0.0-alpha
>            Reporter: Alejandro Abdelnur
>            Assignee: Tsz Wo (Nicholas), SZE
>            Priority: Blocker
>         Attachments: h3577_20120705.patch, h3577_20120708.patch, h3577_20120714.patch
>
>
> If reading a file large enough for which the httpserver running webhdfs/httpfs uses chunked
transfer encoding (more than 24K in the case of webhdfs), then the WebHdfsFileSystem client
fails with an IOException with message *Content-Length header is missing*.
> It looks like WebHdfsFileSystem is delegating opening of the inputstream to *ByteRangeInputStream.URLOpener*
class, which checks for the *Content-Length* header, but when using chunked transfer encoding
the *Content-Length* header is not present and  the *URLOpener.openInputStream()* method thrown
an exception.

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