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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Release1.0Requirements" by DougCutting
Date Thu, 02 Oct 2008 21:18:34 GMT
Dear Wiki user,

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The following page has been changed by DougCutting:

  ''I mean RPC parameters. This one is boarderline. We are hurting for not have a language
neutral serialization. Language neutral serialization is 
  not that hard to do. There are many schemes that do this (Sun RPC, Protocol Buffers, Etch,
Hessian, Thrift). We have to pick rather than invent.''
+ ''I think for 1.0 we should not switch Hadoop's RPC mechanism.  That is a good change to
target for 2.0, when the RPC landscape is clearer.  Language-neutral protocols also mean duplicated
client-side logic which brings considerable complication.'' --DougCutting
  === Versioning Scheme - Manual or Automated ===
  Hadoop is likely to see fairly significant changes between 1.0 and 2.0. Given the compatibility
requirements, we need some scheme (manual or automated) for versioning the RPC interfaces
and also for versioning the data types that are passed as parameters to rpc.

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