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From Arun C Murthy <ar...@yahoo-inc.com>
Subject DFS Client: C api
Date Mon, 15 May 2006 19:59:24 GMT

  I've been working on the C api for the DFS client (via JNI) for a couple of weeks now. Please
find a rough, first-cut attached for your reviews/comments ...

  Status quo:
  a) Implements all of the apis Devraj (ddas@yahoo-inc.com) had posted to this list a while
ago - a few enhancements are pending. E.g. need to make CLASSPATH configurable via a configfile
while initializing JNI etc.
  b) There is a small test-suite for the same - though it isn't very comprehensive right now.
This will change soon enough while I continue testing; especially hdfsCopy and hdfsMove need
more testing with Local/Distributed FileSystem combinations.
  c) Critical point: I have this working against hadoop-0.1.0 (the latest - 0.2.0 wasn't out
when I started on this) and have made sure the differences between 0.1.0 and 0.2.0 are contained
in very small regions. Once I finish some more testing I'll start porting this to work against
0.2.0 (specifically, I need to change the JNI code which uses java.io.File to use org.apache.hadoop.fs.Path).

  I'll be working to get this ready for a stable patch to hadoop asap.


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