Github user shijinkui commented on a diff in the pull request: https://github.com/apache/spark/pull/2644#discussion_r18561868 --- Diff: core/src/main/scala/org/apache/spark/broadcast/BroadcastManager.scala --- @@ -59,7 +59,7 @@ private[spark] class BroadcastManager( private val nextBroadcastId = new AtomicLong(0) def newBroadcast[T: ClassTag](value_ : T, isLocal: Boolean) = { - broadcastFactory.newBroadcast[T](value_, isLocal, nextBroadcastId.getAndIncrement()) + broadcastFactory.newBroadcast[T](value_, isLocal, nextBroadcastId.getAndIncrement) --- End diff -- val i: AtomicLong = new AtomicLong(0) i.incrementAndGet() Code: 0: new #16 // class java/util/concurrent/atomic/AtomicLong 3: dup 4: lconst_0 5: invokespecial #19 // Method java/util/concurrent/atomic/AtomicLong."<init>":(J)V 8: astore_2 9: aload_2 10: invokevirtual #23 // Method java/util/concurrent/atomic/AtomicLong.incrementAndGet:()J 13: pop2 14: return val i: AtomicLong = new AtomicLong(0) i.incrementAndGet Code: 0: new #16 // class java/util/concurrent/atomic/AtomicLong 3: dup 4: lconst_0 5: invokespecial #19 // Method java/util/concurrent/atomic/AtomicLong."<init>":(J)V 8: astore_2 9: aload_2 10: invokevirtual #23 // Method java/util/concurrent/atomic/AtomicLong.incrementAndGet:()J 13: pop2 14: return they are same byte code. scala recommend having no () if having no param
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