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Posted to mapreduce-dev@hadoop.apache.org by "Robert Joseph Evans (Created) (JIRA)" <ji...@apache.org> on 2012/04/10 17:19:19 UTC

[jira] [Created] (MAPREDUCE-4131) Update the HistoryStorage interface to be more complete and robust

Update the HistoryStorage interface to be more complete and robust
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                 Key: MAPREDUCE-4131
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-4131
             Project: Hadoop Map/Reduce
          Issue Type: Improvement
          Components: mrv2
            Reporter: Robert Joseph Evans
            Assignee: Robert Joseph Evans


MAPREDUCE-4059 introduced a pluggable HistoryStorage interface.  The interface right now is very minimal and mostly is the result of refactoring/moving other methods into the new interface.  We should rethink this interface so that it is a complete interface that is stable and robust.  This is also very relevant to MAPREDUCE-3002 where the HistoryContext is to be separated from the ApplicationContext.  This would allow for the HistoryStorage interface to return objects that are not incomplete instances of Job, but instead History specific objects that indicate more cleanly what is and what is not returned.

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