Jacek Laskowski created SPARK-14889:
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Summary: scala.MatchError: NONE (of class scala.Enumeration$Val)
when spark.scheduler.mode=NONE
Key: SPARK-14889
URL: https://issues.apache.org/jira/browse/SPARK-14889
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 2.0.0
Reporter: Jacek Laskowski
Priority: Minor
When {{TaskSchedulerImpl}} is initialized it pattern matches on acceptable
scheduling modes - {{FIFO}} and {{FAIR}} modes - but misses {{NONE}}.
It should at least pattern match the case and throw a more meaningful exception.
{code}
➜ spark git:(master) ✗ ./bin/spark-shell -c spark.scheduler.mode=NONE
16/04/25 09:15:00 ERROR SparkContext: Error initializing SparkContext.
scala.MatchError: NONE (of class scala.Enumeration$Val)
at org.apache.spark.scheduler.Pool.<init>(Pool.scala:53)
at
org.apache.spark.scheduler.TaskSchedulerImpl.initialize(TaskSchedulerImpl.scala:131)
at
org.apache.spark.SparkContext$.org$apache$spark$SparkContext$$createTaskScheduler(SparkContext.scala:2352)
at org.apache.spark.SparkContext.<init>(SparkContext.scala:492)
{code}
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