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From "Colin Patrick McCabe (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-3917) Remove JNI code from libwebhdfs (C client library)
Date Tue, 11 Sep 2012 18:16:08 GMT

    [ https://issues.apache.org/jira/browse/HDFS-3917?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13453247#comment-13453247
] 

Colin Patrick McCabe commented on HDFS-3917:
--------------------------------------------

Thanks for filing this-- it's definitely a good idea.

I think there's two main places where we'll need to change stuff:
* rather than using JNI and the {{Configuration}} class to determine the defaults in the XML
files, we should read them ourselves (but it's a little tricky, because we need to read them
in the correct order)
* we should implement {{hdfsCopy}} and {{hdfsMove}} inside libwebhdfs, as recursive copies,
rather than using JNI and calling into {{IOUtil}}
                
> Remove JNI code from libwebhdfs (C client library)
> --------------------------------------------------
>
>                 Key: HDFS-3917
>                 URL: https://issues.apache.org/jira/browse/HDFS-3917
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Jing Zhao
>            Assignee: Jing Zhao
>
> The current implementation of libwebhdfs (C client library) uses JNI for loading NameNode
configuration and implementing hdfsCopy/hdfsMove. We need to implement the same functionalities
in libwebhdfs without using JNI.

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