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From Apache Wiki <wikidi...@apache.org>
Subject [Hadoop Wiki] Update of "Release1.0Requirements" by SanjayRadia
Date Tue, 28 Oct 2008 21:46:48 GMT
Dear Wiki user,

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The following page has been changed by SanjayRadia:

  ''I am not sure if we as community can start enforcing protocol compatibility right away
because in order to do that we would have to version the rpc parameters. One we version the
data types we can change the policy and enforce it.
  However we can easily support backward compatibility when new methods are added. I am not
sure if this subset can be documented in the
  backward-compatibility policy (more correctly I don't know how to word it); however I will
file a jira to change the rpc layer to detect and throw exceptions on missing methods. I will
also follow that up with a patch for that jira. This will allow is us to treat the addition
of a new method as a backward compatible changes that does not require the version # to be
+ '''A discussion on Hadoop 1.0 compatibility has been started in a email thread sent to ''core-dev@hadoop.apache.org''
with the subject ''Hadoop 1.0 Compatibility Discussion'' - please read and comment there.'''
  === Time frame for 1.0 to 2.0 ===

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