I didn't know about the 3rd server problem. The issue should be added to JIRA
https://issues.apache.org/jira/secure/BrowseProject.jspa I think the problem was in the getInstance method, not the getInstances. I fixed it. I'll check it in and cut a temp build soon. In any case, that code needs to change. I'm making it so that you can have multiple instances of JCS. There are only a few things left that assume that JCS is a singleton. . . . Aaron --- On Thu, 7/9/09, Manuel Cruz <manuelc...@guadaltel.es> wrote: > From: Manuel Cruz <manuelc...@guadaltel.es> > Subject: Re: Third server not discovered by second server with LateralTCP > To: jcs-dev@jakarta.apache.org > Date: Thursday, July 9, 2009, 12:58 AM > > Hello Dieter. > > We look your post in nabble's forum about "Thirds > erver not discovered by > second server with LateralTCP". We have the same problem > but the solution > you gave (synchronized ( instances ) in method > getInstances() ) not work to > us > > Can you help us ? We paste cache.ccf if > you can see it. > > # DEFAULT CACHE REGION > > jcs.default=LTCP > jcs.default.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes > jcs.default.cacheattributes.MaxObjects=1000 > jcs.default.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache > jcs.default.elementattributes.IsEternal=true > #jcs.default.elementattributes.MaxLifeSeconds=21600 > jcs.default.cacheattributes.UseMemoryShrinker=false > jcs.default.cacheattributes.ShrinkerIntervalSeconds=60 > jcs.default.cacheattributes.MaxMemoryIdleTimeSeconds=360000 > jcs.default.elementattributes.IsSpool=false > jcs.default.elementattributes.IsRemote=false > jcs.default.elementattributes.IsLateral=true > > > # PRE-DEFINED CACHE REGIONS > > jcs.region.infocorCacheLateral=LTCP > jcs.region.infocorCacheLateral.cacheattributes=org.apache.jcs.engine.CompositeCacheAttributes > jcs.region.infocorCacheLateral.cacheattributes.MaxObjects=1000 > jcs.region.infocorCacheLateral.cacheattributes.MemoryCacheName=org.apache.jcs.engine.memory.lru.LRUMemoryCache > jcs.region.infocorCacheLateral.elementattributes.IsEternal=true > #jcs.region.infocorCacheLateral.elementattributes.MaxLifeSeconds=21600 > jcs.region.infocorCacheLateral.cacheattributes.UseMemoryShrinker=false > jcs.region.infocorCacheLateral.cacheattributes.ShrinkerIntervalSeconds=60 > jcs.region.infocorCacheLateral.cacheattributes.MaxMemoryIdleTimeSeconds=360000 > jcs.region.infocorCacheLateral.elementattributes.IsSpool=false > jcs.region.infocorCacheLateral.elementattributes.IsRemote=false > jcs.region.infocorCacheLateral.elementattributes.IsLateral=true > > # AVAILABLE AUXILIARY CACHES > > jcs.auxiliary.LTCP=org.apache.jcs.auxiliary.lateral.socket.tcp.LateralTCPCacheFactory > jcs.auxiliary.LTCP.attributes=org.apache.jcs.auxiliary.lateral.socket.tcp.TCPLateralCacheAttributes > jcs.auxiliary.LTCP.attributes.TransmissionTypeName=TCP > jcs.auxiliary.LTCP.attributes.TcpServers=192.168.1.176:41000,192.168.196:41000 > jcs.auxiliary.LTCP.attributes.TcpListenerPort=41100 > jcs.auxiliary.LTCP.attributes.UdpDiscoveryEnabled=false > jcs.auxiliary.LTCP.attributes.Receive=true > jcs.auxiliary.LTCP.attributes.AllowGet=true > jcs.auxiliary.LTCP.attributes.IssueRemoveOnPut=true > jcs.auxiliary.LTCP.attributes.FilterRemoveByHashCode=false > jcs.auxiliary.LTCP.attributes.PutOnlyMode=false > > > Regards and thank you > > > > > > > > > > Dieter Laufkoetter wrote: > > > > Hello, > > > > we use an net with 3 servers and use the LateralTCP > protocol. > > We don´t use musticast > (jcs.auxiliary.LTCP.attributes.UdpDiscoveryEnabled > > = false). > > Each server is configured the other two servers with > > jcs.auxiliary.LTCP.attributes.TcpServers. > > > > At first we start server 1. > > Server 1 tries to connect to server 2 and 3. > > > > Then we start server 2. > > Server 2 connects to server 1 but does not try to > connect to server 3. > > Server 1 connects to server 2 > > > > Then we start server 3. > > Server 3 connects to server 1 and 2. > > Server 1 connects to server 3. > > > > The error: > > Server 2 never tries to connect to server 3 and so the > puts of server 2 > > never reach server 3. > > > > This error occurs with 3 servers on 3 nodes and also > with 3 servers on the > > same node. > > > > > > we found a solution for the problem: > > In the class > > > org.apache.jcs.auxiliary.lateral.socket.tcp.LateralTCPCacheManager > the Map > > "instances" is synchronised at getInstance() but not > at getInstances(). So > > an inconsistent value of instances may be got by call > of getInstances(). > > The following change of getInstances() fixes the > problem: > > > > public Map getInstances() > > { > > synchronized ( > instances ) { > > > return instances; > > } > > } > > > > We use new and fast machines, maybe that older and > slower machines does > > not produce this synchronisation error. > > > > best regards, > > > > Dieter > > > > > > > :-((:-(( > -- > View this message in context: > http://www.nabble.com/Third-server-not-discovered-by-second-server-with-LateralTCP-tp13855881p24405813.html > Sent from the JCS - Dev mailing list archive at > Nabble.com. > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: jcs-dev-unsubscr...@jakarta.apache.org > For additional commands, e-mail: jcs-dev-h...@jakarta.apache.org > > --------------------------------------------------------------------- To unsubscribe, e-mail: jcs-dev-unsubscr...@jakarta.apache.org For additional commands, e-mail: jcs-dev-h...@jakarta.apache.org
