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https://issues.apache.org/jira/browse/HDFS-2656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13415150#comment-13415150
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Suresh Srinivas commented on HDFS-2656:
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bq. libhadoop is not over http like webhdfs, it's over tcp. I would use pure 
c/c++ to implement the hdfs protocol.
Your comment is then not relevant to this Jira. This Jira specifically talks 
about WebHDFS based implementation.
                
> Implement a pure c client based on webhdfs
> ------------------------------------------
>
>                 Key: HDFS-2656
>                 URL: https://issues.apache.org/jira/browse/HDFS-2656
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: webhdfs
>            Reporter: Zhanwei.Wang
>
> Currently, the implementation of libhdfs is based on JNI. The overhead of JVM 
> seems a little big, and libhdfs can also not be used in the environment 
> without hdfs.
> It seems a good idea to implement a pure c client by wrapping webhdfs. It 
> also can be used to access different version of hdfs.

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