Github user JoshRosen commented on the pull request:
https://github.com/apache/spark/pull/3844#issuecomment-69675455
It looks like there's maybe a port-binding / racing issue here?
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=centos/1356/testReport/
```
sbt.ForkMain$ForkError: Transport Connector could not be registered in JMX:
Failed to bind to server socket: mqtt://localhost:23456 due to:
java.net.BindException: Address already in use
at
org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:27)
at
org.apache.activemq.broker.BrokerService.registerConnectorMBean(BrokerService.java:1977)
at
org.apache.activemq.broker.BrokerService.startTransportConnector(BrokerService.java:2468)
at
org.apache.activemq.broker.BrokerService.startAllConnectors(BrokerService.java:2385)
at
org.apache.activemq.broker.BrokerService.doStartBroker(BrokerService.java:684)
at
org.apache.activemq.broker.BrokerService.startBroker(BrokerService.java:642)
at
org.apache.activemq.broker.BrokerService.start(BrokerService.java:578)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite.org$apache$spark$streaming$mqtt$MQTTStreamSuite$$setupMQTT(MQTTStreamSuite.scala:90)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite$$anonfun$1.apply$mcV$sp(MQTTStreamSuite.scala:53)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite$$anonfun$1.apply(MQTTStreamSuite.scala:51)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite$$anonfun$1.apply(MQTTStreamSuite.scala:51)
at org.scalatest.BeforeAndAfter$class.runTest(BeforeAndAfter.scala:195)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite.runTest(MQTTStreamSuite.scala:37)
at
org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:208)
at
org.scalatest.FunSuiteLike$$anonfun$runTests$1.apply(FunSuiteLike.scala:208)
at
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:413)
at
org.scalatest.SuperEngine$$anonfun$traverseSubNodes$1$1.apply(Engine.scala:401)
at scala.collection.immutable.List.foreach(List.scala:318)
at org.scalatest.SuperEngine.traverseSubNodes$1(Engine.scala:401)
at
org.scalatest.SuperEngine.org$scalatest$SuperEngine$$runTestsInBranch(Engine.scala:396)
at org.scalatest.SuperEngine.runTestsImpl(Engine.scala:483)
at org.scalatest.FunSuiteLike$class.runTests(FunSuiteLike.scala:208)
at org.scalatest.FunSuite.runTests(FunSuite.scala:1555)
at org.scalatest.Suite$class.run(Suite.scala:1424)
at
org.scalatest.FunSuite.org$scalatest$FunSuiteLike$$super$run(FunSuite.scala:1555)
at
org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:212)
at
org.scalatest.FunSuiteLike$$anonfun$run$1.apply(FunSuiteLike.scala:212)
at org.scalatest.SuperEngine.runImpl(Engine.scala:545)
at org.scalatest.FunSuiteLike$class.run(FunSuiteLike.scala:212)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite.org$scalatest$BeforeAndAfter$$super$run(MQTTStreamSuite.scala:37)
at org.scalatest.BeforeAndAfter$class.run(BeforeAndAfter.scala:241)
at
org.apache.spark.streaming.mqtt.MQTTStreamSuite.run(MQTTStreamSuite.scala:37)
at
org.scalatest.tools.Framework.org$scalatest$tools$Framework$$runSuite(Framework.scala:462)
at
org.scalatest.tools.Framework$ScalaTestTask.execute(Framework.scala:671)
at sbt.ForkMain$Run$2.call(ForkMain.java:294)
at sbt.ForkMain$Run$2.call(ForkMain.java:284)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: sbt.ForkMain$ForkError: Failed to bind to server socket:
mqtt://localhost:23456 due to: java.net.BindException: Address already in use
at
org.apache.activemq.util.IOExceptionSupport.create(IOExceptionSupport.java:33)
at
org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:138)
at
org.apache.activemq.transport.tcp.TcpTransportFactory.doBind(TcpTransportFactory.java:60)
at
org.apache.activemq.transport.TransportFactory.bind(TransportFactory.java:124)
at
org.apache.activemq.broker.TransportConnector.createTransportServer(TransportConnector.java:310)
at
org.apache.activemq.broker.TransportConnector.getServer(TransportConnector.java:136)
at
org.apache.activemq.broker.TransportConnector.asManagedConnector(TransportConnector.java:105)
at
org.apache.activemq.broker.BrokerService.registerConnectorMBean(BrokerService.java:1972)
... 38 more
Caused by: sbt.ForkMain$ForkError: Address already in use
at java.net.PlainSocketImpl.socketBind(Native Method)
at
java.net.AbstractPlainSocketImpl.bind(AbstractPlainSocketImpl.java:376)
at java.net.ServerSocket.bind(ServerSocket.java:376)
at java.net.ServerSocket.<init>(ServerSocket.java:237)
at
javax.net.DefaultServerSocketFactory.createServerSocket(ServerSocketFactory.java:231)
at
org.apache.activemq.transport.tcp.TcpTransportServer.bind(TcpTransportServer.java:134)
... 44 more
```
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