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https://issues.apache.org/jira/browse/HADOOP-4136?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12629616#action_12629616
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Doug Cutting commented on HADOOP-4136:
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I'm not sure what you're proposing here. Much of HDFS's logic is in the java
client code. We prefer to only support the FileSystem API to access HDFS,
rather than replicate the client logic. The RPCs are thus intentionally not
public and subject to change without warning, for use only by the java client
code.
> 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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