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From "Weiwei Yang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-11189) WebHDFS and FollowRedirects
Date Mon, 05 Dec 2016 03:45:58 GMT

    [ https://issues.apache.org/jira/browse/HDFS-11189?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15721119#comment-15721119
] 

Weiwei Yang commented on HDFS-11189:
------------------------------------

Hello [~guadilla]

Are you talking about client side follow redirects on http connection? If you already have
a patch, you are welcome to attach the patch on this ticket. Use More - Attach Files.


> WebHDFS and FollowRedirects
> ---------------------------
>
>                 Key: HDFS-11189
>                 URL: https://issues.apache.org/jira/browse/HDFS-11189
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.7.3
>         Environment: We are using webhdfs from a j2ee environment with java 6. In the
web application we have a lot of libraries: spring, jersey, jackson...
>            Reporter: Oscar Guadilla
>
> In some cases with simple operations (get file - non two step operation) we detect that
FollowRedirects flag of http comes as "false" and it makes webhdfs crash.
> We don't really know which library change this behavior and it is really strange because
the change is done directly in the jvm because in other wars/ears of the same j2ee server
it fails also. If we restart the j2ee server it starts working again.
> To fix the problem we changed the WebHdfsFileSystem class adding "setInstanceFollowRedirects(true)"
in the connection management instead of supposing that it should be true and it works fine.
> The same problem arises both in 1.x and 2.x webhdfs. We didn't test in 3.x
> Could you fix it? We did it in our environment but it would fine in it could be included
in the next releases.
> Thanks in advance,
> Oscar



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