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[SPARK-4033][Examples]Input of the SparkPi too big causes the emption exception #2874

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[SPARK-4033][Examples]Input of the SparkPi too big causes the emption exception #2874

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Input of the SparkPi is too big
SaintBacchus Oct 21, 2014
4cdc388
Update SparkPi.scala
SaintBacchus Oct 21, 2014
62d7cd7
Add a commit to explain the modify
SaintBacchus Jan 11, 2015
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4 changes: 2 additions & 2 deletions examples/src/main/scala/org/apache/spark/examples/SparkPi.scala
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Expand Up @@ -27,8 +27,8 @@ object SparkPi {
val conf = new SparkConf().setAppName("Spark Pi")
val spark = new SparkContext(conf)
val slices = if (args.length > 0) args(0).toInt else 2
val n = 100000 * slices
val count = spark.parallelize(1 to n, slices).map { i =>
val n = math.min(100000L * slices, Int.MaxValue).toInt // avoid overflow
val count = spark.parallelize(1 until n, slices).map { i =>
val x = random * 2 - 1
val y = random * 2 - 1
if (x*x + y*y < 1) 1 else 0
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