On Monday, August 25, 2014 6:31:15 PM UTC+8, Akka Team wrote: > > Hi Caouyan, > > It is usually dangerous to set the heartbeat-pause to a lesser value than > the heartbeat interval itself. If a heartbeat gets lost, then the next > heartbeat will definitely not make the deadline. I recommend to set it to a > larger value. Also, I would go with a lower heartbeat-interval setting, 10s > seems more appropriate if you want low heartbeat traffic. > > -Endre >
Got it now. Thanks. BTW, Our cluster has ran 15 days with 1 million long-connections, stable and consistent. > > > On Mon, Aug 25, 2014 at 9:31 AM, Caoyuan <[email protected] <javascript:>> > wrote: > >> Update Aug 25, 2014: >> >> We changed >> akka.remote.transport-failure-detector.acceptable-heartbeat-pause = 10 s >> instead of 5 s, the WARN message gone. I guess the [Disassociated] WARN >> might be caused by network delay or GC pause (Full GC lasts 3+ secs now on >> our system) etc. The setting is >> >> akka.remote { >> >> transport-failure-detector { >> >> heartbeat-interval = 30 s # default 4s >> >> acceptable-heartbeat-pause = 10 s # default 10s >> >> } >> } >> >> But, that could not explain the periodic "Disassociated" WARN occurred >> before, which, seems could not be recovered from Disassociated state. >> >> On Monday, August 11, 2014 12:08:00 AM UTC+8, Caoyuan wrote: >>> >>> We have an akka cluster with 10 nodes. it works almost smoothly except >>> periodic firing "Disassociated" WARN log, which seems cannot be recovered: >>> >>> The following is the log records. >>> >>> ...... >>> 2014-08-10 00:00:09,253 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> >>> 2014-08-10 00:00:44,292 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> >>> 2014-08-10 00:01:49,332 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> >>> 2014-08-10 00:02:24,373 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> >>> 2014-08-10 00:02:59,412 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> >>> 2014-08-10 00:03:34,452 WARN a.remote.ReliableDeliverySupervisor >>> akka.tcp://[email protected]:2551/system/endpointManager/ >>> reliableEndpointWriter-akka.tcp%3A%2F%2FClusterSystem% >>> 4010.0.65.3%3A2552-5 - Association with remote system [akka.tcp:// >>> [email protected]:2552] has failed, address is now gated for >>> [5000] ms. Reason is: [Disassociated]. >>> ...... >>> >>> >>> The warning continually occurred almost all day, with the period 35 >>> seconds (30 + 5 s) or 65 seconds (30 + 30 + 5 s), which is exactly the >>> setting of akka.remote's transport failure detector: >>> >>> akka.remote { >>> >>> transport-failure-detector { >>> >>> heartbeat-interval = 30 s # default 4s >>> >>> acceptable-heartbeat-pause = 5 s # default 10s >>> >>> } >>> >>> Where, the failure-detector mark it unavailable after heartbeat-interval >>> + acceptable-heartbeat-pause period (35 s). >>> >>> We're using akka-2.3.3. the node which logged is at 10.0.69.169:2551, >>> and the remote node is at 10.0.65.3:2552 >>> >>> I tried to dig via the akka.remoting source code, but with no >>> progressing. >>> >>> Thoughts ? >>> >>> -Caoyuan Deng >>> >>> -- >> >>>>>>>>>> Read the docs: http://akka.io/docs/ >> >>>>>>>>>> Check the FAQ: >> http://doc.akka.io/docs/akka/current/additional/faq.html >> >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user >> --- >> You received this message because you are subscribed to the Google Groups >> "Akka User List" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected] >> <javascript:>. >> Visit this group at http://groups.google.com/group/akka-user. >> For more options, visit https://groups.google.com/d/optout. >> > > > > -- > Akka Team > Typesafe - The software stack for applications that scale > Blog: letitcrash.com > Twitter: @akkateam > -- >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>>>>>>>> Check the FAQ: >>>>>>>>>> http://doc.akka.io/docs/akka/current/additional/faq.html >>>>>>>>>> Search the archives: https://groups.google.com/group/akka-user --- You received this message because you are subscribed to the Google Groups "Akka User List" group. 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