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From "Tsz Wo (Nicholas), SZE (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3577) webHdfsFileSystem fails to read files with chunked transfer encoding
Date Wed, 04 Jul 2012 03:47:34 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3577?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13406257#comment-13406257
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Tsz Wo (Nicholas), SZE commented on HDFS-3577:
----------------------------------------------

Two potential fixes:

# change WebHdfsFileSystem to support chunked transfer encoding;
# change server to set content length.

Which one is better?
                
> webHdfsFileSystem fails to read files with chunked transfer encoding
> --------------------------------------------------------------------
>
>                 Key: HDFS-3577
>                 URL: https://issues.apache.org/jira/browse/HDFS-3577
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 2.0.0-alpha
>            Reporter: Alejandro Abdelnur
>            Priority: Blocker
>
> 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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