spark shell 配置 Kryo 序列化

$ export SPARK_JAVA_OPTS="-Dspark.serializer=org.apache.spark.serializer.KryoSerializer"

$ ./bin/spark-shell

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# Example:
# spark.master                     spark://master:7077
# spark.eventLog.enabled           true
# spark.eventLog.dir               hdfs://namenode:8021/directory
spark.serializer                 org.apache.spark.serializer.KryoSerializer
# spark.driver.memory              5g
# spark.executor.extraJavaOptions  -XX:+PrintGCDetails -Dkey=value -Dnumbers="one two three"
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