Useless synchronized in JobTracker
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                 Key: HADOOP-3436
                 URL: https://issues.apache.org/jira/browse/HADOOP-3436
             Project: Hadoop Core
          Issue Type: Improvement
            Reporter: Brice Arnould
            Assignee: Brice Arnould
            Priority: Trivial


In the original code, numTaskTrackers is fetch in a synchronized way, which is 
useless because anyway it might be change during the running of the algorithm.

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