java.lang.IllegalArgumentException: System memory 259522560 must be at least 471859200. Please increase heap size using the --driver-memory option or spark.driver.memory in Spark configuration.
。。。。。。。
原因：
JVM运行内存不足
解决方法：
设置-Xms256m -Xmx1024m 解决
Spark ：【error】System memory 259522560 must be at least 471859200
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