repl failed to start in Travis build 936.1

16/11/30 07:08:55.676 RSCClient-4-3: Received result for 31dfa59d-975a-49c1-890d-5b30288fad06
16/11/30 07:08:55.677 RSCClient-4-3: InteractiveSession 3 session state change from starting to running
16/11/30 07:08:58.807 RSCClient-4-3: [ClientProtocol] Failed to find handler for msg 'com.cloudera.livy.rsc.rpc.Rpc$MessageHeader'.
16/11/30 07:08:58.813 RSCClient-4-3: [ClientProtocol] Closing channel due to exception in pipeline (null).
16/11/30 07:08:58.813 RSCClient-4-3: Client RPC channel closed unexpectedly.
16/11/30 07:08:58.813 RSCClient-4-3: Error stopping RPC.
io.netty.util.concurrent.BlockingOperationException: DefaultChannelPromise@47fae43(uncancellable)
	at io.netty.util.concurrent.DefaultPromise.checkDeadLock(DefaultPromise.java:390)
	at io.netty.channel.DefaultChannelPromise.checkDeadLock(DefaultChannelPromise.java:157)
	at io.netty.util.concurrent.DefaultPromise.await(DefaultPromise.java:251)
	at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:129)
	at io.netty.channel.DefaultChannelPromise.await(DefaultChannelPromise.java:28)
	at io.netty.util.concurrent.DefaultPromise.sync(DefaultPromise.java:218)
	at io.netty.channel.DefaultChannelPromise.sync(DefaultChannelPromise.java:117)
	at io.netty.channel.DefaultChannelPromise.sync(DefaultChannelPromise.java:28)
	at com.cloudera.livy.rsc.rpc.Rpc.close(Rpc.java:305)
	at com.cloudera.livy.rsc.RSCClient.stop(RSCClient.java:221)
	at com.cloudera.livy.rsc.RSCClient$2$1.onSuccess(RSCClient.java:118)
	at com.cloudera.livy.rsc.RSCClient$2$1.onSuccess(RSCClient.java:112)
	at com.cloudera.livy.rsc.Utils$2.operationComplete(Utils.java:108)
	at io.netty.util.concurrent.DefaultPromise.notifyListener0(DefaultPromise.java:680)
	at io.netty.util.concurrent.DefaultPromise.notifyListeners(DefaultPromise.java:567)
	at io.netty.util.concurrent.DefaultPromise.trySuccess(DefaultPromise.java:406)
	at io.netty.channel.DefaultChannelPromise.trySuccess(DefaultChannelPromise.java:82)
	at io.netty.channel.AbstractChannel$CloseFuture.setClosed(AbstractChannel.java:956)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.doClose0(AbstractChannel.java:608)
	at io.netty.channel.AbstractChannel$AbstractUnsafe.close(AbstractChannel.java:586)
	at io.netty.channel.DefaultChannelPipeline$HeadContext.close(DefaultChannelPipeline.java:1107)
	at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:543)
	at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:528)
	at io.netty.channel.ChannelDuplexHandler.close(ChannelDuplexHandler.java:73)
	at io.netty.channel.AbstractChannelHandlerContext.invokeClose(AbstractChannelHandlerContext.java:543)
	at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:528)
	at io.netty.channel.AbstractChannelHandlerContext.close(AbstractChannelHandlerContext.java:394)
	at com.cloudera.livy.rsc.rpc.RpcDispatcher.exceptionCaught(RpcDispatcher.java:182)
	at io.netty.channel.AbstractChannelHandlerContext.invokeExceptionCaught(AbstractChannelHandlerContext.java:246)
	at io.netty.channel.AbstractChannelHandlerContext.notifyHandlerException(AbstractChannelHandlerContext.java:737)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:310)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:244)
	at io.netty.handler.codec.ByteToMessageCodec.channelRead(ByteToMessageCodec.java:103)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:308)
	at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:294)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:846)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:131)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:511)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:468)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:382)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:354)
	at io.netty.util.concurrent.SingleThreadEventExecutor$2.run(SingleThreadEventExecutor.java:111)
	at java.lang.Thread.run(Thread.java:745)
16/11/30 07:08:58.817 RSCClient-4-3: [ClientProtocol] Expected RPC header, got com.cloudera.livy.rsc.ReplJobResults instead.
16/11/30 07:08:58.817 RSCClient-4-3: [ClientProtocol] Closing channel due to exception in pipeline (null).
16/11/30 07:08:58.817 RSCClient-4-3: [ClientProtocol] Closing RPC channel with 1 outstanding RPCs.
16/11/30 07:08:58.821 qtp1554249927-29: internal error
java.util.concurrent.ExecutionException: java.util.concurrent.CancellationException
	at io.netty.util.concurrent.AbstractFuture.get(AbstractFuture.java:37)
	at com.cloudera.livy.server.interactive.InteractiveSession.executeStatement(InteractiveSession.scala:463)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet$$anonfun$11$$anonfun$apply$6.apply(InteractiveSessionServlet.scala:124)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet$$anonfun$11$$anonfun$apply$6.apply(InteractiveSessionServlet.scala:123)
	at com.cloudera.livy.server.SessionServlet.doWithSession(SessionServlet.scala:194)
	at com.cloudera.livy.server.SessionServlet.withSession(SessionServlet.scala:187)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet$$anonfun$11.apply(InteractiveSessionServlet.scala:123)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet$$anonfun$11.apply(InteractiveSessionServlet.scala:122)
	at com.cloudera.livy.server.JsonServlet.com$cloudera$livy$server$JsonServlet$$doAction(JsonServlet.scala:114)
	at com.cloudera.livy.server.JsonServlet$$anonfun$jpost$1.apply(JsonServlet.scala:76)
	at org.scalatra.ScalatraBase$class.org$scalatra$ScalatraBase$$liftAction(ScalatraBase.scala:270)
	at org.scalatra.ScalatraBase$$anonfun$invoke$1.apply(ScalatraBase.scala:265)
	at org.scalatra.ScalatraBase$$anonfun$invoke$1.apply(ScalatraBase.scala:265)
	at org.scalatra.ApiFormats$class.withRouteMultiParams(ApiFormats.scala:178)
	at com.cloudera.livy.server.JsonServlet.withRouteMultiParams(JsonServlet.scala:40)
	at org.scalatra.ScalatraBase$class.invoke(ScalatraBase.scala:264)
	at org.scalatra.ScalatraServlet.invoke(ScalatraServlet.scala:49)
	at org.scalatra.ScalatraBase$$anonfun$runRoutes$1$$anonfun$apply$8.apply(ScalatraBase.scala:240)
	at org.scalatra.ScalatraBase$$anonfun$runRoutes$1$$anonfun$apply$8.apply(ScalatraBase.scala:238)
	at scala.Option.flatMap(Option.scala:170)
	at org.scalatra.ScalatraBase$$anonfun$runRoutes$1.apply(ScalatraBase.scala:238)
	at org.scalatra.ScalatraBase$$anonfun$runRoutes$1.apply(ScalatraBase.scala:237)
	at scala.collection.immutable.Stream.flatMap(Stream.scala:446)
	at org.scalatra.ScalatraBase$class.runRoutes(ScalatraBase.scala:237)
	at org.scalatra.ScalatraServlet.runRoutes(ScalatraServlet.scala:49)
	at org.scalatra.ScalatraBase$class.runActions$1(ScalatraBase.scala:163)
	at org.scalatra.ScalatraBase$$anonfun$executeRoutes$1.apply$mcV$sp(ScalatraBase.scala:175)
	at org.scalatra.ScalatraBase$$anonfun$executeRoutes$1.apply(ScalatraBase.scala:175)
	at org.scalatra.ScalatraBase$$anonfun$executeRoutes$1.apply(ScalatraBase.scala:175)
	at org.scalatra.ScalatraBase$class.org$scalatra$ScalatraBase$$cradleHalt(ScalatraBase.scala:193)
	at org.scalatra.ScalatraBase$class.executeRoutes(ScalatraBase.scala:175)
	at org.scalatra.ScalatraServlet.executeRoutes(ScalatraServlet.scala:49)
	at org.scalatra.ScalatraBase$$anonfun$handle$1.apply$mcV$sp(ScalatraBase.scala:113)
	at org.scalatra.ScalatraBase$$anonfun$handle$1.apply(ScalatraBase.scala:113)
	at org.scalatra.ScalatraBase$$anonfun$handle$1.apply(ScalatraBase.scala:113)
	at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
	at org.scalatra.DynamicScope$class.withResponse(DynamicScope.scala:80)
	at org.scalatra.ScalatraServlet.withResponse(ScalatraServlet.scala:49)
	at org.scalatra.DynamicScope$$anonfun$withRequestResponse$1.apply(DynamicScope.scala:60)
	at scala.util.DynamicVariable.withValue(DynamicVariable.scala:57)
	at org.scalatra.DynamicScope$class.withRequest(DynamicScope.scala:71)
	at org.scalatra.ScalatraServlet.withRequest(ScalatraServlet.scala:49)
	at org.scalatra.DynamicScope$class.withRequestResponse(DynamicScope.scala:59)
	at org.scalatra.ScalatraServlet.withRequestResponse(ScalatraServlet.scala:49)
	at org.scalatra.ScalatraBase$class.handle(ScalatraBase.scala:111)
	at org.scalatra.ScalatraServlet.org$scalatra$servlet$ServletBase$$super$handle(ScalatraServlet.scala:49)
	at org.scalatra.servlet.ServletBase$class.handle(ServletBase.scala:43)
	at com.cloudera.livy.server.SessionServlet.org$scalatra$MethodOverride$$super$handle(SessionServlet.scala:40)
	at org.scalatra.MethodOverride$class.handle(MethodOverride.scala:28)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet.org$scalatra$servlet$FileUploadSupport$$super$handle(InteractiveSessionServlet.scala:42)
	at org.scalatra.servlet.FileUploadSupport$class.handle(FileUploadSupport.scala:93)
	at com.cloudera.livy.server.interactive.InteractiveSessionServlet.handle(InteractiveSessionServlet.scala:42)
	at org.scalatra.ScalatraServlet.service(ScalatraServlet.scala:54)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
	at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812)
	at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:587)
	at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127)
	at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515)
	at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061)
	at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
	at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:110)
	at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97)
	at org.eclipse.jetty.server.Server.handle(Server.java:499)
	at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311)
	at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:257)
	at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544)
	at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635)
	at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555)
	at java.lang.Thread.run(Thread.java:745)
Caused by: java.util.concurrent.CancellationException
16/11/30 07:08:58.867 ForkJoinPool-1-worker-3: Stopping InteractiveSession 3...
16/11/30 07:08:58.868 ForkJoinPool-1-worker-3: InteractiveSession 3 session state change from running to shutting_down