when running SingleFeatureTest (SFT) on a Karaf 4 feature, e.g. by "mvn -o -Dsft.diag.skip=true clean install" in genius/features/features4-genius from https://git.opendaylight.org/gerrit/#/c/51966/ (not sure if this also happens in production Karaf or is SFT specific),

see full SFT log attached to (otherwise probably unrelated) ODLPARENT-76 (https://bugs.opendaylight.org/attachment.cgi?id=1620),

then I'm seeing this, even though I'm pretty sure I have nothing running on port 2550, so it looks like we perhaps somewhere don't shut down a Netty from a previous feature install - kind of thing?

Do we need to do something like I've done (unrelated) in https://git.opendaylight.org/gerrit/#/c/52976/ in .. where- where is this ForkJoinPool (below) which launches a NettyTransport started?

2017-03-08 00:14:02,912 | ERROR | pool-2-thread-1 | ServiceRecipe | 14 - org.apache.aries.blueprint.core - 1.6.2 | Error retrieving service from ServiceRecipe[name='.component-1']
org.osgi.service.blueprint.container.ComponentDefinitionException: Error when instantiating bean actorSystemProvider of class org.opendaylight.controller.config.yang.config.actor_system_provider.impl.ActorSystemProviderImpl
at org.apache.aries.blueprint.container.BeanRecipe.wrapAsCompDefEx(BeanRecipe.java:361)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BeanRecipe.getInstanceFromType(BeanRecipe.java:351)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BeanRecipe.getInstance(BeanRecipe.java:282)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:830)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:811)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[14:org.apache.aries.blueprint.core:1.6.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_121]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.di.RefRecipe.internalCreate(RefRecipe.java:62)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:106)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.ServiceRecipe.createService(ServiceRecipe.java:285)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.ServiceRecipe.internalGetService(ServiceRecipe.java:252)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.ServiceRecipe.internalCreate(ServiceRecipe.java:149)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:79)[14:org.apache.aries.blueprint.core:1.6.2]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_121]
at org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:88)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:255)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:186)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:724)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:411)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:276)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:300)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:269)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintExtender.access$900(BlueprintExtender.java:68)[14:org.apache.aries.blueprint.core:1.6.2]
at org.apache.aries.blueprint.container.BlueprintExtender$BlueprintContainerServiceImpl.createContainer(BlueprintExtender.java:602)[14:org.apache.aries.blueprint.core:1.6.2]
at org.opendaylight.controller.blueprint.BlueprintBundleTracker.modifiedBundle(BlueprintBundleTracker.java:210)[124:org.opendaylight.controller.blueprint:0.6.0.SNAPSHOT]
at org.opendaylight.controller.blueprint.BlueprintBundleTracker.addingBundle(BlueprintBundleTracker.java:191)[124:org.opendaylight.controller.blueprint:0.6.0.SNAPSHOT]
at org.opendaylight.controller.blueprint.BlueprintBundleTracker.addingBundle(BlueprintBundleTracker.java:51)[124:org.opendaylight.controller.blueprint:0.6.0.SNAPSHOT]
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:469)[org.osgi.core-6.0.0.jar:]
at org.osgi.util.tracker.BundleTracker$Tracked.customizerAdding(BundleTracker.java:415)[org.osgi.core-6.0.0.jar:]
at org.osgi.util.tracker.AbstractTracked.trackAdding(AbstractTracked.java:256)[org.osgi.core-6.0.0.jar:]
at org.osgi.util.tracker.AbstractTracked.track(AbstractTracked.java:229)[org.osgi.core-6.0.0.jar:]
at org.osgi.util.tracker.BundleTracker$Tracked.bundleChanged(BundleTracker.java:444)[org.osgi.core-6.0.0.jar:]
at org.eclipse.osgi.internal.framework.BundleContextImpl.dispatchEvent(BundleContextImpl.java:902)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.framework.eventmgr.ListenerQueue.dispatchEventSynchronous(ListenerQueue.java:148)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEventPrivileged(EquinoxEventPublisher.java:165)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:75)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxEventPublisher.publishBundleEvent(EquinoxEventPublisher.java:67)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxContainerAdaptor.publishModuleEvent(EquinoxContainerAdaptor.java:102)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.container.Module.publishEvent(Module.java:466)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.container.Module.start(Module.java:457)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:392)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.eclipse.osgi.internal.framework.EquinoxBundle.start(EquinoxBundle.java:411)[org.eclipse.osgi-3.10.101.v20150820-1432.jar:]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.startBundle(FeaturesServiceImpl.java:1286)[8:org.apache.karaf.features.core:4.0.7]
at org.apache.karaf.features.internal.service.Deployer.deploy(Deployer.java:846)[8:org.apache.karaf.features.core:4.0.7]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl.doProvision(FeaturesServiceImpl.java:1176)[8:org.apache.karaf.features.core:4.0.7]
at org.apache.karaf.features.internal.service.FeaturesServiceImpl$1.call(FeaturesServiceImpl.java:1074)[8:org.apache.karaf.features.core:4.0.7]
at java.util.concurrent.FutureTask.run(FutureTask.java:266)[:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_121]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_121]
Caused by: org.jboss.netty.channel.ChannelException: Failed to bind to: /127.0.0.1:2550
at org.jboss.netty.bootstrap.ServerBootstrap.bind(ServerBootstrap.java:272)[123:org.jboss.netty:3.10.6.Final]
at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:417)[91:com.typesafe.akka.remote:2.4.17]
at akka.remote.transport.netty.NettyTransport$$anonfun$listen$1.apply(NettyTransport.scala:413)[91:com.typesafe.akka.remote:2.4.17]
at scala.util.Success$$anonfun$map$1.apply(Try.scala:237)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.util.Try$.apply(Try.scala:192)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.util.Success.map(Try.scala:237)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:55)[85:com.typesafe.akka.actor:2.4.17]
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:91)[85:com.typesafe.akka.actor:2.4.17]
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)[85:com.typesafe.akka.actor:2.4.17]
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)[85:com.typesafe.akka.actor:2.4.17]
at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:90)[85:com.typesafe.akka.actor:2.4.17]
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)[85:com.typesafe.akka.actor:2.4.17]
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)[85:com.typesafe.akka.actor:2.4.17]
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)[249:org.scala-lang.scala-library:2.11.8.v20160304-115712-1706a37eb8]
Caused by: java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)[:1.8.0_121]
at sun.nio.ch.Net.bind(Net.java:433)[:1.8.0_121]
at sun.nio.ch.Net.bind(Net.java:425)[:1.8.0_121]
at sun.nio.ch.ServerSocketChannelImpl.bind(ServerSocketChannelImpl.java:223)[:1.8.0_121]
at sun.nio.ch.ServerSocketAdaptor.bind(ServerSocketAdaptor.java:74)[:1.8.0_121]
at org.jboss.netty.channel.socket.nio.NioServerBoss$RegisterTask.run(NioServerBoss.java:193)[123:org.jboss.netty:3.10.6.Final]
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.processTaskQueue(AbstractNioSelector.java:391)[123:org.jboss.netty:3.10.6.Final]
at org.jboss.netty.channel.socket.nio.AbstractNioSelector.run(AbstractNioSelector.java:315)[123:org.jboss.netty:3.10.6.Final]
at org.jboss.netty.channel.socket.nio.NioServerBoss.run(NioServerBoss.java:42)[123:org.jboss.netty:3.10.6.Final]
at org.jboss.netty.util.ThreadRenamingRunnable.run(ThreadRenamingRunnable.java:108)[123:org.jboss.netty:3.10.6.Final]
at org.jboss.netty.util.internal.DeadLockProofWorker$1.run(DeadLockProofWorker.java:42)[123:org.jboss.netty:3.10.6.Final]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)[:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)[:1.8.0_121]
at java.lang.Thread.run(Thread.java:745)[:1.8.0_121]