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    <title>OpenDaylight JIRA</title>
    <link>https://jira.opendaylight.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>8.20.10</version>
        <build-number>820010</build-number>
        <build-date>22-06-2022</build-date>
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<item>
            <title>[CONTROLLER-843] Clustering : InstanceAlreadyExistsException on startup when registering MBean</title>
                <link>https://jira.opendaylight.org/browse/CONTROLLER-843</link>
                <project id="10113" key="CONTROLLER">controller</project>
                    <description>&lt;p&gt;2014-09-15 19:24:03,374 | ERROR | lt-dispatcher-16 | AbstractMXBean                   | 76 - org.opendaylight.controller.sal-common-util - 1.1.0.SNAPSHOT | registration failed {}&lt;br/&gt;
javax.management.InstanceAlreadyExistsException: org.opendaylight.controller:type=DistributedOperationalDatastore,Category=Shards,name=data-store-executor&lt;br/&gt;
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean.registerMBean(AbstractMXBean.java:101)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStatsMXBeanImpl.create(ThreadExecutorStatsMXBeanImpl.java:60)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats.setNotificationManager(ShardStats.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:143)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:597)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.CreatorConsumer.produce(Props.scala:335)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.Props.newActor(Props.scala:252)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.newActor(ActorCell.scala:552)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.create(ActorCell.scala:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:456)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.run(Mailbox.scala:219)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
2014-09-15 19:24:03,375 | WARN  | lt-dispatcher-20 | AbstractMXBean                   | 76 - org.opendaylight.controller.sal-common-util - 1.1.0.SNAPSHOT | unregister mbean org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=data-store-executor resulted in exception javax.management.InstanceNotFoundException: org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=data-store-executor&lt;br/&gt;
2014-09-15 19:24:03,375 | ERROR | ult-dispatcher-2 | AbstractMXBean                   | 76 - org.opendaylight.controller.sal-common-util - 1.1.0.SNAPSHOT | registration failed {}&lt;br/&gt;
javax.management.InstanceAlreadyExistsException: org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=data-store-executor&lt;br/&gt;
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean.registerMBean(AbstractMXBean.java:101)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStatsMXBeanImpl.create(ThreadExecutorStatsMXBeanImpl.java:60)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats.setNotificationManager(ShardStats.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:143)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:597)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.CreatorConsumer.produce(Props.scala:335)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.Props.newActor(Props.scala:252)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.newActor(ActorCell.scala:552)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.create(ActorCell.scala:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:456)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.run(Mailbox.scala:219)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
2014-09-15 19:24:03,375 | ERROR | lt-dispatcher-19 | AbstractMXBean                   | 76 - org.opendaylight.controller.sal-common-util - 1.1.0.SNAPSHOT | registration failed {}&lt;br/&gt;
javax.management.InstanceAlreadyExistsException: org.opendaylight.controller:type=DistributedOperationalDatastore,Category=Shards,name=data-store-executor&lt;br/&gt;
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean.registerMBean(AbstractMXBean.java:101)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStatsMXBeanImpl.create(ThreadExecutorStatsMXBeanImpl.java:60)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats.setNotificationManager(ShardStats.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:143)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:597)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.CreatorConsumer.produce(Props.scala:335)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.Props.newActor(Props.scala:252)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.newActor(ActorCell.scala:552)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.create(ActorCell.scala:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:456)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.run(Mailbox.scala:219)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
2014-09-15 19:24:03,377 | ERROR | lt-dispatcher-20 | AbstractMXBean                   | 76 - org.opendaylight.controller.sal-common-util - 1.1.0.SNAPSHOT | registration failed {}&lt;br/&gt;
javax.management.InstanceAlreadyExistsException: org.opendaylight.controller:type=DistributedConfigDatastore,Category=Shards,name=data-store-executor&lt;br/&gt;
        at com.sun.jmx.mbeanserver.Repository.addMBean(Repository.java:437)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerWithRepository(DefaultMBeanServerInterceptor.java:1898)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerDynamicMBean(DefaultMBeanServerInterceptor.java:966)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerObject(DefaultMBeanServerInterceptor.java:900)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.registerMBean(DefaultMBeanServerInterceptor.java:324)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at com.sun.jmx.mbeanserver.JmxMBeanServer.registerMBean(JmxMBeanServer.java:522)&lt;span class=&quot;error&quot;&gt;&amp;#91;:1.7.0_45&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.AbstractMXBean.registerMBean(AbstractMXBean.java:101)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.md.sal.common.util.jmx.ThreadExecutorStatsMXBeanImpl.create(ThreadExecutorStatsMXBeanImpl.java:60)&lt;span class=&quot;error&quot;&gt;&amp;#91;76:org.opendaylight.controller.sal-common-util:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.jmx.mbeans.shard.ShardStats.setNotificationManager(ShardStats.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:143)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard.&amp;lt;init&amp;gt;(Shard.java:85)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:597)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at org.opendaylight.controller.cluster.datastore.Shard$ShardCreator.create(Shard.java:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;239:org.opendaylight.controller.sal-distributed-datastore:1.1.0.SNAPSHOT&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.CreatorConsumer.produce(Props.scala:335)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.Props.newActor(Props.scala:252)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.newActor(ActorCell.scala:552)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.create(ActorCell.scala:578)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:456)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.actor.ActorCell.systemInvoke(ActorCell.scala:478)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.processAllSystemMessages(Mailbox.scala:263)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.Mailbox.run(Mailbox.scala:219)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at akka.dispatch.ForkJoinExecutorConfigurator$AkkaForkJoinTask.exec(AbstractDispatcher.scala:393)&lt;span class=&quot;error&quot;&gt;&amp;#91;224:com.typesafe.akka.actor:2.3.4&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinTask.doExec(ForkJoinTask.java:260)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.runTask(ForkJoinPool.java:1339)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinPool.runWorker(ForkJoinPool.java:1979)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;br/&gt;
        at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(ForkJoinWorkerThread.java:107)&lt;span class=&quot;error&quot;&gt;&amp;#91;221:org.scala-lang.scala-library:2.10.4.v20140209-180020-VFINAL-b66a39653b&amp;#93;&lt;/span&gt;&lt;/p&gt;</description>
                <environment>&lt;p&gt;Operating System: All&lt;br/&gt;
Platform: All&lt;/p&gt;</environment>
        <key id="25397">CONTROLLER-843</key>
            <summary>Clustering : InstanceAlreadyExistsException on startup when registering MBean</summary>
                <type id="10104" iconUrl="https://jira.opendaylight.org/secure/viewavatar?size=xsmall&amp;avatarId=10303&amp;avatarType=issuetype">Bug</type>
                                                <status id="5" iconUrl="https://jira.opendaylight.org/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="green"/>
                                    <resolution id="10000">Done</resolution>
                                        <assignee username="tpantelis">Tom Pantelis</assignee>
                                    <reporter username="moraja@cisco.com">Moiz Raja</reporter>
                        <labels>
                    </labels>
                <created>Tue, 16 Sep 2014 10:37:08 +0000</created>
                <updated>Tue, 16 Sep 2014 16:02:00 +0000</updated>
                            <resolved>Tue, 16 Sep 2014 16:02:00 +0000</resolved>
                                    <version>Helium</version>
                                                    <component>mdsal</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                                                                <comments>
                            <comment id="49199" author="tpantelis" created="Tue, 16 Sep 2014 12:53:34 +0000"  >&lt;p&gt;It looks like this was introduced by  &lt;a href=&quot;https://git.opendaylight.org/gerrit/#/c/11189/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://git.opendaylight.org/gerrit/#/c/11189/&lt;/a&gt;. The IMDS now uses a same-thread ListeningExecutorService and not a ThreadPoolExecutor.&lt;/p&gt;</comment>
                            <comment id="49200" author="tpantelis" created="Tue, 16 Sep 2014 16:02:00 +0000"  >&lt;p&gt;Submitted &lt;a href=&quot;https://git.opendaylight.org/gerrit/#/c/11235/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://git.opendaylight.org/gerrit/#/c/11235/&lt;/a&gt;.&lt;/p&gt;</comment>
                    </comments>
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