Marcelo Vanzin created SPARK-11828:
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             Summary: DAGScheduler source registered too early with 
MetricsSystem
                 Key: SPARK-11828
                 URL: https://issues.apache.org/jira/browse/SPARK-11828
             Project: Spark
          Issue Type: Bug
          Components: Spark Core
    Affects Versions: 1.6.0
            Reporter: Marcelo Vanzin
            Priority: Minor


I see this log message when starting apps on YARN:

{quote}
15/11/18 13:12:56 WARN MetricsSystem: Using default name DAGScheduler for 
source because spark.app.id is not set.
{quote}

That's because DAGScheduler registers itself with the metrics system in its 
constructor, and the DAGScheduler is instantiated before "spark.app.id" is set 
in the context's SparkConf.



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