Github user andrewor14 commented on a diff in the pull request:
https://github.com/apache/spark/pull/552#discussion_r12354631
--- Diff: examples/src/main/scala/org/apache/spark/examples/SparkALS.scala
---
@@ -88,32 +88,24 @@ object SparkALS {
}
def main(args: Array[String]) {
- if (args.length == 0) {
- System.err.println("Usage: SparkALS <master> [<M> <U> <F> <iters>
<slices>]")
- System.exit(1)
- }
-
- var host = ""
var slices = 0
- val options = (0 to 5).map(i => if (i < args.length) Some(args(i))
else None)
+ val options = (0 to 4).map(i => if (i < args.length) Some(args(i))
else None)
options.toArray match {
- case Array(host_, m, u, f, iters, slices_) =>
- host = host_.get
+ case Array(m, u, f, iters, slices_) =>
M = m.getOrElse("100").toInt
U = u.getOrElse("500").toInt
F = f.getOrElse("10").toInt
ITERATIONS = iters.getOrElse("5").toInt
slices = slices_.getOrElse("2").toInt
case _ =>
- System.err.println("Usage: SparkALS <master> [<M> <U> <F> <iters>
<slices>]")
+ System.err.println("Usage: Please specify [<M> <U> <F> <iters>
<slices>]")
--- End diff --
I would just do `Usage: SparkALS [M] [U] [F] ...`
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