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https://issues.apache.org/jira/browse/HDFS-2656?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13452740#comment-13452740
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Jing Zhao commented on HDFS-2656:
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Colin, thanks very much for the comment and the cleanup!
I agree we'd better get rid of the JNI code for libwebhdfs. We also think about
the possible solution in which libwebdhfs uses its own preference files to
determine the default NamaNode hostname and port. I will include that in my
pipeline.
For hdfsCopy/hdfsMove, any comments about their implementation without JNI?
> 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
> Assignee: Jing Zhao
> Fix For: 2.0.3-alpha
>
> Attachments: HDFS-2656.patch, HDFS-2656.patch, HDFS-2656.patch,
> HDFS-2656.unfinished.patch, teragen_terasort_teravalidate_performance.png
>
>
> 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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