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From "Daryn Sharp (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-6214) Webhdfs has poor throughput for files >2GB
Date Wed, 16 Apr 2014 15:16:16 GMT

    [ https://issues.apache.org/jira/browse/HDFS-6214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13971533#comment-13971533
] 

Daryn Sharp commented on HDFS-6214:
-----------------------------------

I completely stated it backwards.... swap chunked and non-chunked.

> Webhdfs has poor throughput for files >2GB
> ------------------------------------------
>
>                 Key: HDFS-6214
>                 URL: https://issues.apache.org/jira/browse/HDFS-6214
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: webhdfs
>    Affects Versions: 2.0.0-alpha, 3.0.0
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>         Attachments: HDFS-6214.patch
>
>
> For the DN's open call, jetty returns a Content-Length header for files <2GB, and
uses chunking for files >2GB.  A "bug" in jetty's buffer handling results in a ~8X reduction
in throughput.



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