Hi Johannes, see the news item: http://akka.io/news/2015/01/19/akka-2.3.9-released.html
On Wed, Jan 21, 2015 at 4:47 PM, Johannes Berg <jberg...@gmail.com> wrote: > Upgrading to 2.3.9 does indeed seem to solve my problem. At least I > haven't experienced them yet. > > Now I'm curious what the fixes were, is there somewhere a change summary > between versions or where is it listed what bugs have been fixed in which > versions? > > On Wednesday, January 21, 2015 at 11:31:02 AM UTC+2, drewhk wrote: >> >> Hi Johannes, >> >> We just released 2.3.9 with important bugfixes. I recommend to update and >> see if the problem is still persisting. >> >> -Endre >> >> On Wed, Jan 21, 2015 at 10:29 AM, Johannes Berg <jber...@gmail.com> >> wrote: >> >>> Many connections seem to be formed in the case when the node has been >>> marked down for unreachability even though it's still alive and it tries to >>> connect back into the cluster. The removed node prints: >>> >>> "Address is now gated for 5000 ms, all messages to this address will be >>> delivered to dead letters. Reason: The remote system has quarantined this >>> system. No further associations to the remote system are possible until >>> this system is restarted." >>> >>> It doesn't seem to close the connections properly even though it opens >>> new ones continously. >>> >>> Anyway that's a separate issue that I'm not that concerned about right >>> now, I've now realized I don't want to use automatic downing instead I >>> would like to allow nodes to go unreachable and come back to reachable even >>> if it takes quite some time and manually stopping the process and downing >>> the node in case of an actual crash. >>> >>> Consequently I've put >>> >>> auto-down-unreachable-after = off >>> >>> in the config. Now I have the problem that nodes still are removed, this >>> is from the leader node log: >>> >>> 08:50:14.087UTC INFO [system-akka.actor.default-dispatcher-4] >>> Cluster(akka://system) - Cluster Node [akka.tcp://system@ip1:port1] - >>> Leader is removing unreachable node [akka.tcp://system@ip2:port2] >>> >>> I can understand my node is marked unreachable beause it's under heavy >>> load but I don't understand what could cause it to be removed. I'm not >>> doing any manual downing and have the auto-down to off, what else could >>> trigger the removal? >>> >>> Using the akka-cluster script I can see that the node has most other >>> nodes marked as unreachable (including the leader) and that it has another >>> leader than other nodes. >>> >>> My test system consists of 8 nodes. >>> >>> About the unreachability I'm not having long GC pauses and not sending >>> large blobs, but I'm sending very many smaller messages as fast as I can. >>> If I just hammer it fast enough it will end up unreachable which I can >>> except, but I need to get it back to reachable. >>> >>> On Thursday, December 11, 2014 at 11:22:41 AM UTC+2, Björn Antonsson >>> wrote: >>>> >>>> Hi Johannes, >>>> >>>> On 9 December 2014 at 15:29:53, Johannes Berg (jber...@gmail.com) >>>> wrote: >>>> >>>> Hi! I'm doing some load tests in our system and getting problems that >>>> some of my nodes are marked as unreachable even though the processes are >>>> up. I'm seeing it going a few times from reachable to unreachable and back >>>> a few times before staying unreachable saying connection gated for 5000ms >>>> and staying silently that way. >>>> >>>> Looking at the connections made to one of the seed nodes I see that I >>>> have several hundreds of connections from other nodes except the failing >>>> ones. Is this normal? There are several (hundreds) just between two nodes. >>>> When are connections formed between cluster nodes and when are they taken >>>> down? >>>> >>>> >>>> Several hundred connections between two nodes seems very wrong. There >>>> should only be one connection between two nodes that communicate over akka >>>> remoting or are part of a cluster. How many nodes do you have in your >>>> cluster? >>>> >>>> If you are using cluster aware routers then there should be one >>>> connection between the router node and the rooutee nodes (can be the same >>>> connection that is used for the cluster communication). >>>> >>>> The connections between the nodes don't get torn down, they stay open, >>>> but they are reused for all remoting communication between the nodes. >>>> >>>> Also is there some limit on how many connections a node with default >>>> settings will accept? >>>> >>>> We have auto-down-unreachable-after = 10s set in our config, does this >>>> mean if the node is busy and doesn't respond in 10 seconds it becomes >>>> unreachable? >>>> >>>> Is there any reason why it would stay unreachable and not re-try to >>>> join the cluster? >>>> >>>> >>>> The auto down, setting is actually just what it says. I the node is >>>> considered unreachable for 10 seconds, it will be moved to DOWN and won't >>>> be able to come back into the cluster. The different states of the cluster >>>> and the settings are explained in the documentation. >>>> >>>> http://doc.akka.io/docs/akka/2.3.7/common/cluster.html >>>> http://doc.akka.io/docs/akka/2.3.7/scala/cluster-usage.html >>>> >>>> If you are having problems with nodes becoming unreachable then you >>>> could check if you are doing one of these things: >>>> 1) sending to large blobs as messages, that effectively block out the >>>> heart beats going over the same connection >>>> 2) having long GC pauses that trigger the failure detector since nodes >>>> don't reply to heartbeats >>>> >>>> B/ >>>> >>>> We are using Akka 2.3.6 and using cluster aware routers quite much with >>>> a lot of remote messages going around. >>>> >>>> Anyone that can shed some light on this or that can point me at some >>>> documentation about these things? >>>> -- >>>> >>>>>>>>>> Read the docs: http://akka.io/docs/ >>>> >>>>>>>>>> Check the FAQ: http://doc.akka.io/docs/akka/c >>>> urrent/additional/faq.html >>>> >>>>>>>>>> Search the archives: https://groups.google.com/grou >>>> p/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 akka-user+...@googlegroups.com. >>>> To post to this group, send email to akka...@googlegroups.com. >>>> Visit this group at http://groups.google.com/group/akka-user. >>>> For more options, visit https://groups.google.com/d/optout. >>>> >>>> >>>> -- >>>> Björn Antonsson >>>> Typesafe <http://typesafe.com/> – Reactive Apps on the JVM >>>> twitter: @bantonsson <http://twitter.com/#!/bantonsson> >>>> >>>> -- >>> >>>>>>>>>> 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 akka-user+...@googlegroups.com. >>> To post to this group, send email to akka...@googlegroups.com. >>> Visit this group at http://groups.google.com/group/akka-user. >>> For more options, visit https://groups.google.com/d/optout. >>> >> >> -- > >>>>>>>>>> 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 akka-user+unsubscr...@googlegroups.com. > To post to this group, send email to akka-user@googlegroups.com. > Visit this group at http://groups.google.com/group/akka-user. > For more options, visit https://groups.google.com/d/optout. > -- Cheers, √ -- >>>>>>>>>> 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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