单项选择题
A.1B.2C.3D.服务器核心数
A.org.apache.spark.serializer.KryoSerializerB.org.apache.spark.serializer.JavaSerializerC.org.apache.spark.serializer.Lz4SerializerD.org.apache.spark.serializer.ScalaSerializer
A.spark.driver.extraJarPathB.spark.driver.extraClassPathC.spark.driver.extraJarDirectoryD.spark.driver.extraClassDirectory
A.spark.dynamicAllocation.enabledB.spark.dynamicScheduler.enabledC.spark.dynamicShuffle.enabledD.spark.dynamicSubmit.enabled
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