GitHub user dlogothetis opened a pull request:

    https://github.com/apache/giraph/pull/84

    Fix BspServiceMaster bug

    Occasionally, BspServiceMaster fails to detect that a worker finished a 
superstep (e.g. input superstep, or a compute supestep). As a result, the job 
may get stuck as the master keeps waiting for all workers to finish.
    
    While this is hard to reproduce, this fixes a potential cause for this.
    
    Tests
    - Unit tests
    - Internal snapshot tests
    - Ran large job

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

    $ git pull https://github.com/dlogothetis/giraph fix_bsp

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

    https://github.com/apache/giraph/pull/84.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 #84
    
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commit 507956f1a053510be2e4d41cdf0d3444bddd4bbb
Author: Dionysios Logothetis <dlogothetis@...>
Date:   2018-09-18T16:30:20Z

    Fix BspServiceMaster bug

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