Github user manuzhang commented on a diff in the pull request:
https://github.com/apache/incubator-gearpump/pull/85#discussion_r80808708
--- Diff:
streaming/src/main/scala/org/apache/gearpump/streaming/dsl/Stream.scala ---
@@ -115,20 +121,17 @@ class Stream[T](
*
* For example,
* {{{
- * Stream[People].groupBy(_.gender).flatmap(..).filter.(..).reduce(..)
+ * Stream[People].groupBy(_.gender).flatMap(..).filter(..).reduce(..)
* }}}
*
- * @param fun Group by function
+ * @param fn Group by function
* @param parallelism Parallelism level
* @param description The description
* @return the grouped stream
*/
- def groupBy[Group](fun: T => Group, parallelism: Int = 1, description:
String = null)
- : Stream[T] = {
- val groupOp = GroupByOp(fun, parallelism,
Option(description).getOrElse("groupBy"))
- graph.addVertex(groupOp)
- graph.addEdge(thisNode, edge.getOrElse(Shuffle), groupOp)
- new Stream[T](graph, groupOp)
+ def groupBy[GROUP](fn: T => GROUP, parallelism: Int = 1, description:
String = "groupBy")
+ : GroupByStream[T, GROUP] = {
+ groupByWindow(DefaultGroupBy(fn), parallelism, description)
--- End diff --
Yes, I have a new version that does so. Will update today
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