Spark ：【error】System memory 259522560 must be at least 471859200

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.
。。。。。。。

the reason:

     JVM running out of memory 

Solution:

Set -Xms256m -Xmx1024m solve