Wow! What did you use for the animation? I want that :D
-Endre On Tue, Jun 2, 2015 at 12:10 AM, Lance Arlaus <[email protected]> wrote: > Circling back on this, I created a blog post that explains the issue I > encountered along with the solution of using a balancing buffer. > > > http://blog.lancearlaus.com/akka/streams/scala/2015/05/27/Akka-Streams-Balancing-Buffer/ > > I hope it helps those who encounter the same issue. > > > On Saturday, May 9, 2015 at 11:49:48 AM UTC-4, Lance Arlaus wrote: >> >> No problem. >> Thanks for the quick response and here's the corresponding issue: >> https://github.com/akka/akka/issues/17435 >> >> On Saturday, May 9, 2015 at 5:05:44 AM UTC-4, drewhk wrote: >>> >>> Hi Lance, >>> >>> On Sat, May 9, 2015 at 12:49 AM, Lance Arlaus <[email protected]> >>> wrote: >>> >>>> Hi- >>>> >>>> I've encountered an issue with processing a stream that I fan out via >>>> broadcast and fan in via zip. >>>> The broadcast splits the stream in two with one branch containing a >>>> drop element. >>>> According to my read of the docs, I would expect the terminating zip to >>>> complete when the shorter of the two streams (the one with the drop) >>>> completes. >>>> However, the flow hangs waiting indefinitely. >>>> >>>> Here's the relevant part of a test case I put together to reproduce the >>>> problem. >>>> Note that the flow without the drop (the first flow) works fine with >>>> different length streams. >>>> What am I doing wrong? >>>> >>> >>> I don't think you are doing anything wrong. Btw, I suspect the bug being >>> in Broadcast instead. Can you file a ticket please? >>> >>> -Endre >>> >>> >>>> >>>> Akka Stream Version: 1.0-RC2 >>>> >>>> Thanks, >>>> Lance >>>> >>>> // This flow works fine >>>> def zipSource(num: Int, diff: Int) = Source() { implicit b => >>>> import akka.stream.scaladsl.FlowGraph.Implicits._ >>>> >>>> val source0 = b.add(Source(1 to num)) >>>> val source1 = b.add(Source(1 to (num + diff))) >>>> val zip = b.add(Zip[Int, Int]) >>>> >>>> source0 ~> zip.in0 >>>> source1 ~> zip.in1 >>>> >>>> (zip.out) >>>> } >>>> >>>> // This flow waits indefinitely when diff > 0 >>>> def zipDropSource(num: Int, diff: Int) = Source() { implicit b => >>>> import akka.stream.scaladsl.FlowGraph.Implicits._ >>>> >>>> val source = b.add(Source(1 to (num + diff))) >>>> val bcast = b.add(Broadcast[Int](2)) >>>> val drop = b.add(Flow[Int].drop(diff)) >>>> val zip = b.add(Zip[Int, Int]) >>>> >>>> source ~> bcast ~> zip.in0 >>>> bcast ~> drop ~> zip.in1 >>>> >>>> (zip.out) >>>> } >>>> >>>> // PASS >>>> "Zip" should "complete with same length streams" in { >>>> val future: Future[Int] = zipSource(10, >>>> 10).runWith(Sink.fold(0)((s, i) => s + 1)) >>>> whenReady(future)(_ shouldBe 10) >>>> } >>>> >>>> // PASS >>>> it should "complete with different length streams" in { >>>> val future: Future[Int] = zipSource(10, >>>> 20).runWith(Sink.fold(0)((s, i) => s + 1)) >>>> whenReady(future)(_ shouldBe 10) >>>> } >>>> >>>> // PASS >>>> "Zip with drop" should "complete with same length streams" in { >>>> val future: Future[Int] = zipDropSource(10, >>>> 0).runWith(Sink.fold(0)((s, i) => s + 1)) >>>> whenReady(future)(_ shouldBe 10) >>>> } >>>> >>>> // FAIL >>>> it should "complete with different length streams" in { >>>> val future: Future[Int] = zipDropSource(10, >>>> 10).runWith(Sink.fold(0)((s, i) => s + 1)) >>>> whenReady(future)(_ shouldBe 10) >>>> } >>>> >>>> } >>>> >>>> -- >>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>> >>>>>>>>>> Check the FAQ: >>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>> >>>>>>>>>> Search the archives: >>>> https://groups.google.com/group/akka-user >>>> --- >>>> You received this message because you are subscribed to the Google >>>> Groups "Akka User List" group. >>>> To unsubscribe from this group and stop receiving emails from it, send >>>> an email to [email protected]. >>>> To post to this group, send email to [email protected]. >>>> Visit this group at http://groups.google.com/group/akka-user. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>> >>> -- > >>>>>>>>>> Read the docs: http://akka.io/docs/ > >>>>>>>>>> Check the FAQ: > http://doc.akka.io/docs/akka/current/additional/faq.html > >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user > --- > You received this message because you are subscribed to the Google Groups > "Akka User List" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Akka Team Typesafe - Reactive apps on the JVM Blog: letitcrash.com Twitter: @akkateam -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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