[SPARK-12692][BUILD][STREAMING] Scala style: Fix the style violation (Space before "," or ":")

Fix the style violation (space before , and :).
This PR is a followup for #10643.

Author: Kousuke Saruta <sarutak@oss.nttdata.co.jp>

Closes #10685 from sarutak/SPARK-12692-followup-streaming.

1 files changed, 4 insertions, 4 deletions

diff --git a/external/flume-sink/src/main/scala/org/apache/spark/streaming/flume/sink/Logging.scala b/external/flume-sink/src/main/scala/org/apache/spark/streaming/flume/sink/Logging.scala
index d87b86932d..aa530a7121 100644
--- a/external/flume-sink/src/main/scala/org/apache/spark/streaming/flume/sink/Logging.scala
+++ b/external/flume-sink/src/main/scala/org/apache/spark/streaming/flume/sink/Logging.scala
@@ -26,20 +26,20 @@ import org.slf4j.{Logger, LoggerFactory}
 private[sink] trait Logging {
   // Make the log field transient so that objects with Logging can
   // be serialized and used on another machine
-  @transient private var log_ : Logger = null
+  @transient private var _log: Logger = null
 
   // Method to get or create the logger for this object
   protected def log: Logger = {
-    if (log_ == null) {
+    if (_log == null) {
       initializeIfNecessary()
       var className = this.getClass.getName
       // Ignore trailing $'s in the class names for Scala objects
       if (className.endsWith("$")) {
         className = className.substring(0, className.length - 1)
       }
-      log_ = LoggerFactory.getLogger(className)
+      _log = LoggerFactory.getLogger(className)
     }
-    log_
+    _log
   }
 
   // Log methods that take only a String