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From StephanEwen <...@git.apache.org>
Subject [GitHub] flink issue #4369: [Flink-7218] [JobManager] ExecutionVertex.getPreferredLoc...
Date Mon, 24 Jul 2017 12:46:06 GMT
Github user StephanEwen commented on the issue:

    https://github.com/apache/flink/pull/4369
  
    Hi @summerleafs!
    
    I think we cannot use this approach to fix this. The most important thing is that this
introduces a blocking operation (`.get()` on the future) in the call, which will make the
while `schedueEager()` call block. Since the ExecutionGraph runs in an actor-style context,
methods must never block. Everything must be implemented with future completion functions.



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