[jira] [Created] (GIRAPH-1050) Add MapperObserver

[Maja Kabiljo (JIRA)]

Maja Kabiljo created GIRAPH-1050:
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             Summary: Add MapperObserver
                 Key: GIRAPH-1050
                 URL: https://issues.apache.org/jira/browse/GIRAPH-1050
             Project: Giraph
          Issue Type: New Feature
            Reporter: Maja Kabiljo
            Assignee: Maja Kabiljo
            Priority: Minor


Add MapperObserver which will be called once per mapper before anything else 
happens.



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