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From "Stephan Ewen (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FLINK-4525) Drop the "eager split pre-assignment" code paths
Date Mon, 29 Aug 2016 10:00:29 GMT
Stephan Ewen created FLINK-4525:
-----------------------------------

             Summary: Drop the "eager split pre-assignment" code paths
                 Key: FLINK-4525
                 URL: https://issues.apache.org/jira/browse/FLINK-4525
             Project: Flink
          Issue Type: Improvement
          Components: JobManager
    Affects Versions: 1.1.2
         Environment: 	
            Reporter: Stephan Ewen
            Assignee: Stephan Ewen
             Fix For: 1.2.0


There is currently an interface for input splits {{StrictlyLocalAssignment}} that is half-heartedly
supported in the JobManager (it is, for example, not fault tolerant).

I suggest to drop these special cases for the following reasons:
  - they do not fit the assumptions of all the rest of the system well (localize where possible,
but never constrain)
  - they make the logic of implemented as part of dynamic resource acquisition hard
  - they are not fully implemented even today
  - I am not aware of anyone using this feature
  - It is complicated to maintain



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