Github user andrewor14 commented on the pull request:
https://github.com/apache/spark/pull/204#issuecomment-39919584
Also, to update others who are following this conversation. The exception
reported in [SPARK-1407](https://issues.apache.org/jira/browse/SPARK-1407)
turned out to be due to not properly finishing the application (i.e. through
the shutdown hook triggered by System.exit without `sc.stop()`). This is not a
bug inherent in the event logging interface or the HistoryServer, AFAIK.
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