DistributedShardedDOMDataTreeRemotingTest.testProducerRegistrations fails intermittently

testProducerRegistrations(org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTreeRemotingTest) Time elapsed: 108.576 sec <<< ERROR!
java.lang.RuntimeException: org.opendaylight.controller.cluster.sharding.DOMDataTreeShardCreationFailedException: Unable to create a cds shard.
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTree.initDefaultShard(DistributedShardedDOMDataTree.java:559)
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTree.init(DistributedShardedDOMDataTree.java:247)
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTreeRemotingTest.initEmptyDatastores(DistributedShardedDOMDataTreeRemotingTest.java:165)
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTreeRemotingTest.testProducerRegistrations(DistributedShardedDOMDataTreeRemotingTest.java:178)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:47)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:44)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.internal.runners.statements.RunAfters.evaluate(RunAfters.java:27)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:271)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:70)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:238)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:63)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:236)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:53)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:229)
at org.junit.runners.ParentRunner.run(ParentRunner.java:309)
at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:283)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:173)
at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:153)
at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:128)
at org.apache.maven.surefire.booter.ForkedBooter.invokeProviderInSameClassLoader(ForkedBooter.java:203)
at org.apache.maven.surefire.booter.ForkedBooter.runSuitesInProcess(ForkedBooter.java:155)
at org.apache.maven.surefire.booter.ForkedBooter.main(ForkedBooter.java:103)
Caused by: org.opendaylight.controller.cluster.sharding.DOMDataTreeShardCreationFailedException: Unable to create a cds shard.
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTree$2$2.apply(DistributedShardedDOMDataTree.java:358)
at org.opendaylight.controller.cluster.sharding.DistributedShardedDOMDataTree$2$2.apply(DistributedShardedDOMDataTree.java:355)
at scala.concurrent.Future$$anonfun$transform$1$$anonfun$apply$2.apply(Future.scala:224)
at scala.concurrent.Future$$anonfun$transform$1$$anonfun$apply$2.apply(Future.scala:224)
at scala.util.Try$.apply(Try.scala:192)
at scala.concurrent.Future$$anonfun$transform$1.apply(Future.scala:224)
at scala.concurrent.Future$$anonfun$transform$1.apply(Future.scala:222)
at scala.concurrent.impl.CallbackRunnable.run(Promise.scala:32)
at akka.dispatch.BatchingExecutor$AbstractBatch.processBatch(BatchingExecutor.scala:55)
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply$mcV$sp(BatchingExecutor.scala:91)
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)
at akka.dispatch.BatchingExecutor$BlockableBatch$$anonfun$run$1.apply(BatchingExecutor.scala:91)
at scala.concurrent.BlockContext$.withBlockContext(BlockContext.scala:72)
at akka.dispatch.BatchingExecutor$BlockableBatch.run(BatchingExecutor.scala:90)
at akka.dispatch.TaskInvocation.run(AbstractDispatcher.scala:39)
at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:415)
at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)
at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)
at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)
at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)
Caused by: org.opendaylight.controller.cluster.sharding.DOMDataTreeShardCreationFailedException: Unable to find the backend shard.Failing..
at org.opendaylight.controller.cluster.sharding.LookupTask.fail(LookupTask.java:50)
at org.opendaylight.controller.cluster.sharding.LookupTask.tryReschedule(LookupTask.java:40)
at org.opendaylight.controller.cluster.sharding.ShardedDataTreeActor$ShardCreationLookupTask$1.onComplete(ShardedDataTreeActor.java:451)
at org.opendaylight.controller.cluster.sharding.ShardedDataTreeActor$ShardCreationLookupTask$1.onComplete(ShardedDataTreeActor.java:447)
at akka.dispatch.OnComplete.internal(Future.scala:258)
at akka.dispatch.OnComplete.internal(Future.scala:256)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:186)
at akka.dispatch.japi$CallbackBridge.apply(Future.scala:183)
... 13 more
Caused by: org.opendaylight.controller.cluster.datastore.exceptions.LocalShardNotFoundException: Local shard for default does not exist.
at org.opendaylight.controller.cluster.datastore.utils.ActorContext$3.checkedApply(ActorContext.java:294)
at org.opendaylight.controller.cluster.datastore.utils.ActorContext$3.checkedApply(ActorContext.java:283)
at akka.dispatch.Mapper.apply(Future.scala:359)
at scala.util.Success$$anonfun$map$1.apply(Try.scala:237)
at scala.util.Try$.apply(Try.scala:192)
at scala.util.Success.map(Try.scala:237)
at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
at scala.concurrent.Future$$anonfun$map$1.apply(Future.scala:237)
... 13 more

Since this is happening in initEmptyDatastores it could affect any of the tests. I've looked into it but haven't found the cause yet. It seems to happen if member-2 becomes the leader of prefix-configuration shard. The PrefixedShardConfigUpdateHandler DTCL for the ShardManager doesn't get notified so the local default shard on member-1 isn't found. I've also seen it fail where the PrefixedShardConfigUpdateHandler DTCL for the DistributedShardedDOMDataTree doesn't get notified.

For now I'll submit a patch to ignore the tests.