[SPARK-3854][BUILD] Scala style: require spaces before `{`. ## What changes were proposed in this pull request?
Since the opening curly brace, '{', has many usages as discussed in [SPARK-3854](https://issues.apache.org/jira/browse/SPARK-3854), this PR adds a ScalaStyle rule to prevent '){' pattern for the following majority pattern and fixes the code accordingly. If we enforce this in ScalaStyle from now, it will improve the Scala code quality and reduce review time. ``` // Correct: if (true) { println("Wow!") } // Incorrect: if (true){ println("Wow!") } ``` IntelliJ also shows new warnings based on this. ## How was this patch tested? Pass the Jenkins ScalaStyle test. Author: Dongjoon Hyun <dongj...@apache.org> Closes #11637 from dongjoon-hyun/SPARK-3854. Project: http://git-wip-us.apache.org/repos/asf/bahir/repo Commit: http://git-wip-us.apache.org/repos/asf/bahir/commit/41ae1d27 Tree: http://git-wip-us.apache.org/repos/asf/bahir/tree/41ae1d27 Diff: http://git-wip-us.apache.org/repos/asf/bahir/diff/41ae1d27 Branch: refs/heads/master Commit: 41ae1d27524342aa9bbf854a7cbfddd37e8e8370 Parents: 84a1471 Author: Dongjoon Hyun <dongj...@apache.org> Authored: Thu Mar 10 15:57:22 2016 -0800 Committer: Andrew Or <and...@databricks.com> Committed: Thu Mar 10 15:57:22 2016 -0800 ---------------------------------------------------------------------- .../org/apache/spark/examples/streaming/akka/ActorWordCount.scala | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) ---------------------------------------------------------------------- http://git-wip-us.apache.org/repos/asf/bahir/blob/41ae1d27/streaming-akka/examples/src/main/scala/org/apache/spark/examples/streaming/akka/ActorWordCount.scala ---------------------------------------------------------------------- diff --git a/streaming-akka/examples/src/main/scala/org/apache/spark/examples/streaming/akka/ActorWordCount.scala b/streaming-akka/examples/src/main/scala/org/apache/spark/examples/streaming/akka/ActorWordCount.scala index 2770b8a..844772a 100644 --- a/streaming-akka/examples/src/main/scala/org/apache/spark/examples/streaming/akka/ActorWordCount.scala +++ b/streaming-akka/examples/src/main/scala/org/apache/spark/examples/streaming/akka/ActorWordCount.scala @@ -100,7 +100,7 @@ class SampleActorReceiver[T](urlOfPublisher: String) extends ActorReceiver { object FeederActor { def main(args: Array[String]) { - if (args.length < 2){ + if (args.length < 2) { System.err.println("Usage: FeederActor <hostname> <port>\n") System.exit(1) }