Hello, I am running https://github.com/apache/spark/blob/branch-1.6/examples/src/main/python/pi.py example, but facing following exception
What is the unit of memory pointed out in the error? Following are configs --master local[*] --deploy-mode client --name PysparkExample --py-files py4j-0.9-src.zip,pyspark.zip, --verbose pi.py/py4j-0.9-src.zip/py4j/protocol.py", line 308, in get_return_value py4j.protocol.Py4JJavaError: An error occurred while calling None.org.apache.spark.api.java.JavaSparkContext. : java.lang.IllegalArgumentException: System memory 186646528 must be at least 4.718592E8. Please use a larger heap size. at org.apache.spark.memory.UnifiedMemoryManager$.getMaxMemory(UnifiedMemoryManager.scala:193) at org.apache.spark.memory.UnifiedMemoryManager$.apply(UnifiedMemoryManager.scala:175) at org.apache.spark.SparkEnv$.create(SparkEnv.scala:354) at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:193) at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:288) at org.apache.spark.SparkContext.<init>(SparkContext.scala:457) at org.apache.spark.api.java.JavaSparkContext.<init>(JavaSparkContext.scala:59) at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method) at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62) at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.lang.reflect.Constructor.newInstance(Constructor.java:422) at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:234) at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381) at py4j.Gateway.invoke(Gateway.java:214) at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:79) at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:68) at py4j.GatewayConnection.run(GatewayConnection.java:209) at java.lang.Thread.run(Thread.java:745)