Takuya Ueshin created SPARK-7826:
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Summary: Suppress extra calling getCacheLocs.
Key: SPARK-7826
URL: https://issues.apache.org/jira/browse/SPARK-7826
Project: Spark
Issue Type: Improvement
Components: Spark Core
Reporter: Takuya Ueshin
There are too many extra call method {{getCacheLocs}} for {{DAGScheduler}},
which includes Akka communication.
To improve {{DAGScheduler}} performance, suppress extra calling the method.
In my application with over 1200 stages, the execution time became 3.8 min from
8.5 min with my patch.
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