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https://issues.apache.org/jira/browse/HADOOP-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629626#action_12629626
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Doug Cutting commented on HADOOP-4136:
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Okay, that is really what you meant! Unfortunately I'm not convinced we yet
want to support that, since it implies a lot of duplicated logic that will be
hard to maintain. Once we go 1.0 it might be easier, since the HDFS protocols
should be more stable then.
> imeplement DFSClient on top of thriftfs - this may require DFSClient or DN
> protocol changes
> -------------------------------------------------------------------------------------------
>
> Key: HADOOP-4136
> URL: https://issues.apache.org/jira/browse/HADOOP-4136
> Project: Hadoop Core
> Issue Type: New Feature
> Components: contrib/thiftfs, dfs, fs
> Reporter: Pete Wyckoff
> Priority: Minor
>
> Open up DFS Protocol to allow non-Hadoop DFS clients to implement
> reads/writes. Obviously, the NN need not be changed because the thriftfs
> server will serve up the same metadata - ie it's a bridge to the NN.
> This is useful because if we can do this in Java using more open APIs, we
> could do it in C++ or Python or Perl :)
> Doing it in Java first makes sense because we already have the DFSClient -
> kind of a proof of concept.
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