That error is from  akka persistence. It happens if the backend persistence
plugin doesn't respond back in time. I've only seen this in a CSIT
environment whose disk activity was overloaded. The timeouts can be tweaked
- I don't recall exactly what they are but you can find them in the akka
docs (names contain circuit-breaker).

On Thu, Aug 10, 2017 at 6:01 PM, Srini Seetharaman <
srini.seethara...@gmail.com> wrote:

> Hi Tom,
> In our ODL deployment that is running in standalone mode with operational
> store persistence enabled, we saw the following error being printed. Once
> the member-1-default-operational shard is shutdown, all write transactions
> after that fail and the system becomes unstable. At this point, we were
> probably doing less than 10 transactions per second. Any idea what is
> causing this? Has anyone seen this before?
>
>
> 2017-08-07 19:15:59,622 | ERROR | lt-dispatcher-23 | Shard
>            | 176 - com.typesafe.akka.slf4j - 2.4.7 | Failed to persist
> event type [org.opendaylight.controller.cluster.raft.ReplicatedLogImplEntry]
> with sequence number [9897493] for persistenceId [member-1-shard-default-
> operational].
> akka.pattern.CircuitBreaker$$anon$1: Circuit Breaker Timed out.
> 2017-08-07 19:15:59,628 | INFO  | lt-dispatcher-24 | Shard
>            | 188 - org.opendaylight.controller.sal-akka-raft -
> 1.4.2.Boron-SR2 | Stopping Shard member-1-shard-default-operational
> 2017-08-07 19:15:59,629 | ERROR | lt-dispatcher-23 |
> LocalThreePhaseCommitCohort      | 193 - 
> org.opendaylight.controller.sal-distributed-datastore
> - 1.4.2.Boron-SR2 | Failed to prepare transaction 
> member-1-datastore-operational-fe-5-txn-791019
> on backend
> java.lang.RuntimeException: Transaction aborted due to shutdown.
>         at org.opendaylight.controller.cluster.datastore.
> ShardCommitCoordinator.abortPendingTransactions(
> ShardCommitCoordinator.java:399)[193:org.opendaylight.
> controller.sal-distributed-datastore:1.4.2.Boron-SR2]
>         at org.opendaylight.controller.cluster.datastore.Shard.
> postStop(Shard.java:211)[193:org.opendaylight.controller.
> sal-distributed-datastore:1.4.2.Boron-SR2]
>         at akka.actor.Actor$class.aroundPostStop(Actor.scala:
> 494)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.persistence.UntypedPersistentActor.akka$
> persistence$Eventsourced$$super$aroundPostStop(PersistentActor.scala:168)[
> 181:com.typesafe.akka.persistence:2.4.7]
>         at akka.persistence.Eventsourced$class.aroundPostStop(
> Eventsourced.scala:223)[181:com.typesafe.akka.persistence:2.4.7]
>         at akka.persistence.UntypedPersistentActor.aroundPostStop(
> PersistentActor.scala:168)[181:com.typesafe.akka.persistence:2.4.7]
>         at akka.actor.dungeon.FaultHandling$class.akka$
> actor$dungeon$FaultHandling$$finishTerminate(FaultHandling.
> scala:210)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.dungeon.FaultHandling$class.handleChildTerminated(
> FaultHandling.scala:293)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.handleChildTerminated(
> ActorCell.scala:374)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.dungeon.DeathWatch$class.watchedActorTerminated(
> DeathWatch.scala:61)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.watchedActorTerminated(
> ActorCell.scala:374)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:
> 460)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.systemInvoke(ActorCell.scala:
> 483)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.processAllSystemMessages(
> Mailbox.scala:282)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:
> 260)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.run(Mailbox.scala:224)[175:com.
> typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.exec(Mailbox.scala:234)[175:com.
> typesafe.akka.actor:2.4.7]
>         at scala.concurrent.forkjoin.ForkJoinTask.doExec(
> ForkJoinTask.java:260)[171:org.scala-lang.scala-library:
> 2.11.8.v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.
> runTask(ForkJoinPool.java:1339)[171:org.scala-lang.scala-library:2.11.8.
> v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinPool.runWorker(
> ForkJoinPool.java:1979)[171:org.scala-lang.scala-library:
> 2.11.8.v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(
> ForkJoinWorkerThread.java:107)[171:org.scala-lang.scala-
> library:2.11.8.v20160304-115712-1706a37eb8]
> 2017-08-07 19:15:59,629 | WARN  | ult-dispatcher-3 |
> ConcurrentDOMDataBroker          | 193 - 
> org.opendaylight.controller.sal-distributed-datastore
> - 1.4.2.Boron-SR2 | Tx: DOM-956840 Error during phase CAN_COMMIT, starting
> Abort
> java.lang.RuntimeException: Transaction aborted due to shutdown.
>         at org.opendaylight.controller.cluster.datastore.
> ShardCommitCoordinator.abortPendingTransactions(
> ShardCommitCoordinator.java:399)[193:org.opendaylight.
> controller.sal-distributed-datastore:1.4.2.Boron-SR2]
>         at org.opendaylight.controller.cluster.datastore.Shard.
> postStop(Shard.java:211)[193:org.opendaylight.controller.
> sal-distributed-datastore:1.4.2.Boron-SR2]
>         at akka.actor.Actor$class.aroundPostStop(Actor.scala:
> 494)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.persistence.UntypedPersistentActor.akka$
> persistence$Eventsourced$$super$aroundPostStop(PersistentActor.scala:168)[
> 181:com.typesafe.akka.persistence:2.4.7]
>         at akka.persistence.Eventsourced$class.aroundPostStop(
> Eventsourced.scala:223)[181:com.typesafe.akka.persistence:2.4.7]
>         at akka.persistence.UntypedPersistentActor.aroundPostStop(
> PersistentActor.scala:168)[181:com.typesafe.akka.persistence:2.4.7]
>         at akka.actor.dungeon.FaultHandling$class.akka$
> actor$dungeon$FaultHandling$$finishTerminate(FaultHandling.
> scala:210)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.dungeon.FaultHandling$class.handleChildTerminated(
> FaultHandling.scala:293)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.handleChildTerminated(
> ActorCell.scala:374)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.dungeon.DeathWatch$class.watchedActorTerminated(
> DeathWatch.scala:61)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.watchedActorTerminated(
> ActorCell.scala:374)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.invokeAll$1(ActorCell.scala:
> 460)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.actor.ActorCell.systemInvoke(ActorCell.scala:
> 483)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.processAllSystemMessages(
> Mailbox.scala:282)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.processMailbox(Mailbox.scala:
> 260)[175:com.typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.run(Mailbox.scala:224)[175:com.
> typesafe.akka.actor:2.4.7]
>         at akka.dispatch.Mailbox.exec(Mailbox.scala:234)[175:com.
> typesafe.akka.actor:2.4.7]
>         at scala.concurrent.forkjoin.ForkJoinTask.doExec(
> ForkJoinTask.java:260)[171:org.scala-lang.scala-library:
> 2.11.8.v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinPool$WorkQueue.
> runTask(ForkJoinPool.java:1339)[171:org.scala-lang.scala-library:2.11.8.
> v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinPool.runWorker(
> ForkJoinPool.java:1979)[171:org.scala-lang.scala-library:
> 2.11.8.v20160304-115712-1706a37eb8]
>         at scala.concurrent.forkjoin.ForkJoinWorkerThread.run(
> ForkJoinWorkerThread.java:107)[171:org.scala-lang.scala-
> library:2.11.8.v20160304-115712-1706a37eb8]
> 2017-08-07 19:15:59,630 | INFO  | lt-dispatcher-17 | LocalActorRef
>            | 176 - com.typesafe.akka.slf4j - 2.4.7 | Message
> [org.opendaylight.controller.cluster.raft.client.messages.GetOnDemandRaftState]
> from Actor[akka://opendaylight-cluster-data/temp/$b] to
> Actor[akka://opendaylight-cluster-data/user/shardmanager-operational/
> member-1-shard-default-operational#-376322108] was not delivered. [1]
> dead letters encountered. This logging can be turned off or adjusted with
> configuration settings 'akka.log-dead-letters' and
> 'akka.log-dead-letters-during-shutdown'.
>
>
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