Spark: Could not find CoarseGrainedScheduler
org.apache.spark.SparkException: Could not find Co ...
原文：SparkException: Could not find CoarseGrainedScheduler or it has been stopped.
解决办法： 在提交代码的时候添加配置spark submit ... conf spark.dynamicAllocation.enabled false 也可以在代码中通过SparkConf设置：conf.set spark.dynamicAllocation.enabled , false ...
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