GitHub user zsxwing opened a pull request:

    https://github.com/apache/spark/pull/5306

    [SPARK-6640][Core] Fix the race condition of creating HeartbeatReceiver and 
retrieving HeartbeatReceiver

    This PR moved the code of creating `HeartbeatReceiver` above the code of 
creating `schedulerBackend` to resolve the race condition.

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/zsxwing/spark SPARK-6640

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/spark/pull/5306.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #5306
    
----
commit d7c250d53feb74ce4e1a827e73b806e237b70ab7
Author: zsxwing <[email protected]>
Date:   2015-04-01T06:44:30Z

    Fix the race condition of creating HeartbeatReceiver and retrieving 
HeartbeatReceiver

----


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