We've rolled back to 1.11.4 in a couple scenarios. We have also setup a
cron job to restart 1.13.2 nodes once a day.
Ryan
On Tue, Aug 17, 2021 at 1:25 AM Axel Schwarz <axelkop...@emailn.de> wrote:
> Hey Ryan,
>
> that sounds awefully familiar. What we successfully battled so far is the
> load balancing problem.
> You can find the whole plot of this drama in the mailing list archive,
> title is "No Load Balancing since 1.13.2"
>
> Of course I will keep this thread updated, but unfortunately we had to
> make the decision to role back completely to 1.12.1 because we just cannot
> afford investing more time into this right now. But we'll certainly come
> back to this later. We have to...
>
> --- Ursprüngliche Nachricht ---
> Von: Ryan Hendrickson <ryan.andrew.hendrick...@gmail.com>
> Datum: 17.08.2021 03:32:25
> An: users@nifi.apache.org
> Betreff: Re: Disfunctional cluster with version 1.13.2
>
> > Axel,
> > We've had significant issues with 1.13.2 in a Cluster as well. We're
> >
> > working on a test config... Issues range from abandoned FlowFiles, single
> >
> > Nodes locking the entire cluster, load balance relationships not working,
> >
> > and undocumented nifi properties. We're reluctant to move to 1.14.0
> > because we haven't seen anything specifically fixed in it.
> >
> > Please keep the community up-to-date on your findings.
> >
> > Ryan
> >
> > On Mon, Aug 16, 2021 at 11:00 AM Pierre Villard <
> pierre.villard...@gmail.com>
> >
> > wrote:
> >
> > > Hi,
> > >
> > > What's the version of ZK?
> > >
> > > Thanks,
> > > Pierre
> > >
> > > Le jeu. 12 août 2021 à 09:55, Axel Schwarz <axelkop...@emailn.de>
> > a
> > > écrit :
> > >
> > >> Dear all,
> > >>
> > >> after successfully battling the load balancing and installing Version
> >
> > >> 1.13.2 again in our 3 node production environment, we experienced
> > another
> > >> failure in the cluster resulting in a complete cut-off of the flow
> > just
> > >> 1,5h after the update.
> > >> We noticed it just by trying to access the webinterface, which
> > >> immediately after login showed something like:
> > >>
> > >> "Cannot replicate request to Node nifiHost1.contoso.com:8443
> > because the
> > >> node is not connected"
> > >>
> > >> There was nothing we could do through the webinterface aside from
> > staring
> > >> at this message and when looking at the live logs, there was nothing
> >
> > >> suspicious. The log moved on as if nothing happened.
> > >> After a restart of the cluster everything was working fine again,
> > but we
> > >> saw, that the entire flow wasn't working for some period of time.
> > This
> > >> alone is really uncool, as we running a cluster for exactly that
> > reason:
> > >> The flow should keep working, even if some node decides to malfunction
> > for
> > >> whatever reason.
> > >>
> > >> Digging a little deeper into the logs showed two noticable problems:
> >
> > >>
> > >> 1. The Zookeeper is restarting every few minutes. Which in the log
> > always
> > >> looks like this:
> > >>
> > >> ------------------------------------(nifiHost1.contoso.com)
> > >>
> nifi-app.log------------------------------------------------------------------------------------
> >
> > >>
> > >> 2021-08-11 12:02:39,187 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> 2021-08-11 12:02:39,187 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer shutting down
> > >> 2021-08-11 12:02:39,194 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.FinalRequestProcessor shutdown of request processor
> > complete
> > >> 2021-08-11 12:02:39,196 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.SyncRequestProcessor Shutting down
> > >> 2021-08-11 12:02:39,196 INFO [SyncThread:1]
> > >> o.a.z.server.SyncRequestProcessor SyncRequestProcessor exited!
> > >> 2021-08-11 12:02:39,199 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer minSessionTimeout set to 4000
> >
> > >> 2021-08-11 12:02:39,200 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer maxSessionTimeout set to 40000
> >
> > >> 2021-08-11 12:02:39,200 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Created server with tickTime
> > 2000
> > >> minSessionTimeout 4000 maxSessionTimeout 40000 datadir
> > >> /opt/nifi/logs/zookeeper/version-2 snapdir
> > >> /opt/nifi/state/zookeeper/version-2
> > >> 2021-08-11 12:02:39,276 ERROR [Timer-Driven Process
> > >> Thread-27-EventThread] org.apache.zookeeper.ClientCnxn Error while
> > calling
> > >> watcher
> > >> java.lang.NullPointerException: null
> > >> at
> > >>
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:535)
> >
> > >> at
> > >> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510)
> >
> > >> 2021-08-11 12:02:39,277 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: SUSPENDED
> > >> 2021-08-11 12:02:40,001 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: RECONNECTED
> > >> 2021-08-11 12:02:40,006 INFO [Curator-ConnectionStateManager-0]
> >
> > >> o.a.n.c.l.e.CuratorLeaderElectionManager
> > >>
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@1d37e350
> >
> > >> Connection State changed to SUSPENDED
> > >> 2021-08-11 12:02:40,006 INFO [Curator-ConnectionStateManager-0]
> >
> > >> o.a.n.c.l.e.CuratorLeaderElectionManager
> > >>
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@1908642e
> >
> > >> Connection State changed to SUSPENDED
> > >> 2021-08-11 12:02:40,006 INFO [Curator-ConnectionStateManager-0]
> >
> > >> o.a.n.c.l.e.CuratorLeaderElectionManager
> > >>
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@1d37e350
> >
> > >> Connection State changed to RECONNECTED
> > >> 2021-08-11 12:02:40,006 INFO [Curator-ConnectionStateManager-0]
> >
> > >> o.a.n.c.l.e.CuratorLeaderElectionManager
> > >>
> org.apache.nifi.controller.leader.election.CuratorLeaderElectionManager$ElectionListener@1908642e
> >
> > >> Connection State changed to RECONNECTED
> > >> 2021-08-11 12:02:40,014 INFO [main-EventThread]
> > >> o.a.c.framework.imps.EnsembleTracker New config event received:
> > {}
> > >> 2021-08-11 12:02:40,127 INFO [Clustering Tasks Thread-2]
> > >> o.a.n.c.c.ClusterProtocolHeartbeater Heartbeat created at 2021-08-11
> >
> > >> 12:02:39,176 and sent to nifiHost3.contoso.com:54321 at 2021-08-11
> >
> > >> 12:02:40,127; send took 951 millis
> > >> 2021-08-11 12:02:40,186 ERROR [Timer-Driven Process
> > >> Thread-27-EventThread] org.apache.zookeeper.ClientCnxn Error while
> > calling
> > >> watcher
> > >> java.lang.NullPointerException: null
> > >> at
> > >>
> org.apache.zookeeper.ClientCnxn$EventThread.processEvent(ClientCnxn.java:535)
> >
> > >> at
> > >> org.apache.zookeeper.ClientCnxn$EventThread.run(ClientCnxn.java:510)
> >
> > >>
> > >>
> > >>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------
> >
> > >>
> > >> This happens, as mentioned, every few minutes and looks like this
> > when
> > >> condensed through grep:
> > >>
> > >> ------------------------------------(nifiHost1.contoso.com)
> nifi-app.log
> >
> > >> | grep "ZooKeeperServer Shutting
> > >> down"---------------------------------------------
> > >>
> > >> ./nifi-app.log:4237:2021-08-11 12:02:39,187 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4378:2021-08-11 12:03:22,084 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4447:2021-08-11 12:03:57,639 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4563:2021-08-11 12:04:18,921 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4629:2021-08-11 12:04:33,199 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4650:2021-08-11 12:05:03,939 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:4801:2021-08-11 12:05:39,348 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:5327:2021-08-11 12:06:56,736 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:7250:2021-08-11 12:21:41,464 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:7703:2021-08-11 12:24:54,244 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8148:2021-08-11 12:27:21,093 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8190:2021-08-11 12:27:37,820 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8350:2021-08-11 12:28:37,417 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8797:2021-08-11 12:33:25,184 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8813:2021-08-11 12:33:39,672 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8971:2021-08-11 12:34:22,003 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:8984:2021-08-11 12:34:36,511 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9349:2021-08-11 12:36:29,802 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9376:2021-08-11 12:36:41,541 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9491:2021-08-11 12:37:12,390 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9504:2021-08-11 12:37:25,888 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9676:2021-08-11 12:39:22,775 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:9842:2021-08-11 12:40:49,396 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:10251:2021-08-11 12:43:38,807 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:10397:2021-08-11 12:44:36,326 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:11405:2021-08-11 12:52:26,384 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:11629:2021-08-11 12:53:33,054 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:11827:2021-08-11 12:54:43,783 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:11990:2021-08-11 12:56:23,389 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:12085:2021-08-11 12:57:21,410 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:12823:2021-08-11 13:01:23,674 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:13087:2021-08-11 13:04:44,524 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:14610:2021-08-11 13:16:15,432 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:14635:2021-08-11 13:16:37,724 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:14751:2021-08-11 13:17:38,169 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:15136:2021-08-11 13:17:59,547 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:15203:2021-08-11 13:18:30,695 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:15516:2021-08-11 13:21:43,631 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:15743:2021-08-11 13:22:49,630 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:15950:2021-08-11 13:23:50,574 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16035:2021-08-11 13:24:30,913 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16396:2021-08-11 13:28:01,873 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16470:2021-08-11 13:29:12,550 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16541:2021-08-11 13:29:38,490 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16568:2021-08-11 13:29:53,554 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16678:2021-08-11 13:31:13,437 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> ./nifi-app.log:16705:2021-08-11 13:31:28,195 INFO
> > >> [QuorumPeer[myid=1](plain=/0.0.0.0:2181)(secure=disabled)]
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >>
> > >>
> > >>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------
> >
> > >>
> > >> So my first question is: Is this behaviour of zookeeper normal?
> > Well it
> > >> is just an INFO, but I would love to here that this is a completely
> > normal
> > >> phenomenon. :D
> > >>
> > >> 2. After all these zookeeper restarts, nifi finally throws the
> following
> >
> > >> error along with the "last" zookeeper restart:
> > >>
> > >> ------------------------------------(nifiHost1.contoso.com)
> > >>
> nifi-app.log------------------------------------------------------------------------------------
> >
> > >>
> > >> 2021-08-11 13:31:13,083 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: SUSPENDED
> > >> 2021-08-11 13:31:13,437 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> 2021-08-11 13:31:13,437 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer shutting down
> > >> 2021-08-11 13:31:13,439 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.FinalRequestProcessor shutdown of request processor
> > complete
> > >> 2021-08-11 13:31:13,440 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.SyncRequestProcessor Shutting down
> > >> 2021-08-11 13:31:13,440 INFO [SyncThread:1]
> > >> o.a.z.server.SyncRequestProcessor SyncRequestProcessor exited!
> > >> 2021-08-11 13:31:13,450 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer minSessionTimeout set to 4000
> >
> > >> 2021-08-11 13:31:13,450 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer maxSessionTimeout set to 40000
> >
> > >> 2021-08-11 13:31:13,450 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Created server with tickTime
> > 2000
> > >> minSessionTimeout 4000 maxSessionTimeout 40000 datadir
> > >> /opt/nifi/logs/zookeeper/version-2 snapdir
> > >> /opt/nifi/state/zookeeper/version-2
> > >> 2021-08-11 13:31:13,462 ERROR [Load-Balance Server Thread-5]
> > >> o.a.n.c.q.c.s.ConnectionLoadBalanceServer Failed to communicate
> > with Peer
> > >> nifiHost2.contoso.com/192.168.1.11:19500
> > >> java.io.EOFException: Expected to receive a Transaction Completion
> >
> > >> Indicator from Peer nifiHost2.contoso.com but encountered EOF
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.completeTransaction(StandardLoadBalanceProtocol.java:299)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.receiveFlowFiles(StandardLoadBalanceProtocol.java:275)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.receiveFlowFiles(StandardLoadBalanceProtocol.java:133)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.ConnectionLoadBalanceServer$CommunicateAction.run(ConnectionLoadBalanceServer.java:162)
> >
> > >> at java.lang.Thread.run(Thread.java:748)
> > >> 2021-08-11 13:31:13,464 ERROR [Load-Balance Server Thread-6]
> > >> o.a.n.c.q.c.s.ConnectionLoadBalanceServer Failed to communicate
> > with Peer
> > >> nifiHost2.contoso.com/192.168.1.11:19502
> > >> java.io.EOFException: Expected to receive a Transaction Completion
> >
> > >> Indicator from Peer nifiHost2.contoso.com but encountered EOF
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.completeTransaction(StandardLoadBalanceProtocol.java:299)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.receiveFlowFiles(StandardLoadBalanceProtocol.java:275)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.StandardLoadBalanceProtocol.receiveFlowFiles(StandardLoadBalanceProtocol.java:133)
> >
> > >> at
> > >>
> org.apache.nifi.controller.queue.clustered.server.ConnectionLoadBalanceServer$CommunicateAction.run(ConnectionLoadBalanceServer.java:162)
> >
> > >> at java.lang.Thread.run(Thread.java:748)
> > >> 2021-08-11 13:31:13,589 INFO [Process Cluster Protocol Request-1]
> >
> > >> o.a.n.c.c.node.NodeClusterCoordinator Status of
> > >> nifiHost1.contoso.com:8443 changed from NodeConnectionStatus[nodeId=
> >
> > >> nifiHost1.contoso.com:8443, state=CONNECTED, updateId=16] to
> > >> NodeConnectionStatus[nodeId=nifiHost1.contoso.com:8443,
> > >> state=CONNECTING, updateId=16]
> > >> 2021-08-11 13:31:13,793 INFO [Process Cluster Protocol Request-7]
> >
> > >> o.a.n.c.p.impl.SocketProtocolListener Finished processing request
> >
> > >> 88980d85-b956-4713-9686-50d76a407871 (type=RECONNECTION_REQUEST,
> >
> > >> length=2209040 bytes) from nifiHost1.contoso.com:8443 in 142 millis
> >
> > >> 2021-08-11 13:31:13,794 INFO [Reconnect to Cluster]
> > >> o.a.nifi.controller.StandardFlowService Processing reconnection
> > request
> > >> from cluster coordinator.
> > >> 2021-08-11 13:31:13,794 INFO [Reconnect to Cluster]
> > >> o.a.n.c.l.e.CuratorLeaderElectionManager Election Listener for Role
> > Primary
> > >> Node disabled
> > >> 2021-08-11 13:31:13,802 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: RECONNECTED
> > >> 2021-08-11 13:31:28,195 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Shutting down
> > >> 2021-08-11 13:31:28,196 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer shutting down
> > >> 2021-08-11 13:31:28,198 INFO [pool-22-thread-1]
> > >> o.a.n.c.r.WriteAheadFlowFileRepository Initiating checkpoint of
> > FlowFile
> > >> Repository
> > >> 2021-08-11 13:31:28,202 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.FinalRequestProcessor shutdown of request processor
> > complete
> > >> 2021-08-11 13:31:28,203 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.z.server.SyncRequestProcessor Shutting down
> > >> 2021-08-11 13:31:28,203 INFO [SyncThread:1]
> > >> o.a.z.server.SyncRequestProcessor SyncRequestProcessor exited!
> > >> 2021-08-11 13:31:28,204 INFO [Timer-Driven Process Thread-21]
> > >> o.a.n.p.store.WriteAheadStorePartition Successfully rolled over
> > Event
> > >> Writer for Provenance Event Store Partition[directory=/opt/pr] due
> > to
> > >> MAX_TIME_REACHED. Event File was 6.7 MB and contained 1626 events.
> >
> > >> 2021-08-11 13:31:28,208 INFO [pool-22-thread-1]
> > >> o.a.n.wali.SequentialAccessWriteAheadLog Checkpointed Write-Ahead
> > Log with
> > >> 10 Records and 0 Swap Files in 8 milliseconds (Stop-the-world time
> > = 1
> > >> milliseconds), max Transaction ID 27772177643
> > >> 2021-08-11 13:31:28,208 INFO [pool-22-thread-1]
> > >> o.a.n.c.r.WriteAheadFlowFileRepository Successfully checkpointed
> > FlowFile
> > >> Repository with 10 records in 8 milliseconds
> > >> 2021-08-11 13:31:28,295 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: SUSPENDED
> > >> 2021-08-11 13:31:29,808 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer minSessionTimeout set to 4000
> >
> > >> 2021-08-11 13:31:29,809 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer maxSessionTimeout set to 40000
> >
> > >> 2021-08-11 13:31:29,809 INFO [QuorumPeer[myid=1](plain=/0.0.0.0:2181
> )(secure=disabled)]
> >
> > >> o.a.zookeeper.server.ZooKeeperServer Created server with tickTime
> > 2000
> > >> minSessionTimeout 4000 maxSessionTimeout 40000 datadir
> > >> /opt/nifi/logs/zookeeper/version-2 snapdir
> > >> /opt/nifi/state/zookeeper/version-2
> > >> 2021-08-11 13:31:32,291 INFO [main-EventThread]
> > >> o.a.c.f.state.ConnectionStateManager State change: RECONNECTED
> > >>
> > >>
> > >>
> ------------------------------------------------------------------------------------------------------------------------------------------------------------
> >
> > >>
> > >> After that, the log continues with normal messages about heartbeats
> > and
> > >> provenance events but no error occurs anymore. That exactly was
> > the time,
> > >> the whole flow cut-off.
> > >>
> > >> I've got to add, that we've never experienced that flow cut-off
> > behaviour
> > >> with version 1.12.1, but the zookeeper restarts occur there as well
> > and as
> > >> often as seen above.
> > >> But when first updating to version 1.13.2 back in June, we experienced
> >
> > >> this flow cut-off multiple times beside the not working load
> balancing.
> >
> > >> Back then I thought this was connected to each other, but now we
> > had a
> > >> fully functional load balancing and the cut-off happened nevertheless.
> >
> > >>
> > >> I'm thankful for any hint. :)
> > >>
> > >>
> > >>
> > >>
> >
>
>
>
