Github user SaintBacchus commented on a diff in the pull request:
https://github.com/apache/spark/pull/2874#discussion_r19155846
--- Diff: examples/src/main/scala/org/apache/spark/examples/SparkPi.scala
---
@@ -27,7 +27,7 @@ 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 n = if (100000.toLong * slices > Int.MaxValue) Int.MaxValue - 1
else 100000 * slices
--- End diff --
@srowen when the value n is larger than the Int.MaxValue, it's better to
set just a small value for slices.But user inputting a big slices may just wish
that the SparkPi can run for more time.So I just limit the size of Seqs and do
not modify the parallelism of the app.
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