Subject: RE: Messages received from different group. - msg#00006

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Messages received from different group.

I am just starting playing with JGroup and created a class that uses both NotificationBus and the MessageDispatcher (each having their own channel). When running with eclipse, I only see messages when I tell 'm to send them. When I run the same class from the command line, I see a lot of the below warnings. I am suspecting that the log level is different in both cases. What I'd like to know is why am getting these as warnings. It reads to me that one channel receives messages (are these the pings????) send by the other and vice versa. Can anyone explain? Secondly how/where do I set and define the log levels.  I don't care too much about warnings (after understanding them); Thanks, Bas WARNING: discarded message from different group (commandGroup). Sender was batter:3831 Nov 22, 2004 1:23:31 PM org.jgroups.protocols.UDP handleMessage WARNING: discarded message from different group (commandGroup). Sender was batter:3831 Nov 22, 2004 1:23:35 PM org.jgroups.protocols.UDP handleMessage WARNING: discarded message from different group (NotificationGroup). Sender was batter:3838

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Merge

Hi I am running the following scenario: I have two or more machine implementing fail over using jgroups. When one of the machines fails, others in the group detect it and take action. What I expect, is when the machine that failed comes back in (putting the network plug back in - the application is still running, meaning that that machine still "thinks" it is in the group), the other members should recognize it, without the need to restart the appliaction and rejoining the group. Once I was told to add MERGE2 to the protocol stack. It did not help. The "other" machines do not see that server comes back in, and not sharing data with it. I am using the following protocol stack : UDP(bind_addr={0};mcast_addr={1};mcast_port={2};ip_ttl=32;\ mcast_send_buf_size=150000;mcast_recv_buf_size=80000):\ PING(timeout=1250;num_initial_members=2):\ MERGE2(max_interval=10000;min_interval=5000):\ FD_SOCK:\ FD(timeout=1000;max_tries=2):\ VERIFY_SUSPECT(timeout=500):\ pbcast.NAKACK(gc_lag=50;retransmit_timeout=300):\ UNICAST(timeout=1000):\ pbcast.STABLE(desired_avg_gossip=5000):\ FRAG(frag_size=4096;down_thread=false;up_thread=false):\ pbcast.GMS(join_timeout=5000;join_retry_timeout=2000;\ shun=false;print_local_addr=true):\ pbcast.STATE_TRANSFER Help would be appriciated. ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/

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Re: Messages received from different group.

You can ignore the warnings; you have 2 groups, and they simply discard each other's messages. What I recommend though is to change the multicast address and/or port in one of them, e.g. UDP(mcast_addr=228.1.2.3; mcast_port=45678) Ven, Bas (Jacob Bastiaan Ven) wrote: I am just starting playing with JGroup and created a class that uses both NotificationBus and the MessageDispatcher (each having their own channel). When running with eclipse, I only see messages when I tell 'm to send them. When I run the same class from the command line, I see a lot of the below warnings. I am suspecting that the log level is different in both cases. What I'd like to know is why am getting these as warnings. It reads to me that one channel receives messages (are these the pings????) send by the other and vice versa. Can anyone explain? Secondly how/where do I set and define the log levels. I don't care too much about warnings (after understanding them); Thanks, Bas WARNING: discarded message from different group (commandGroup). Sender was batter:3831 Nov 22, 2004 1:23:31 PM org.jgroups.protocols.UDP handleMessage WARNING: discarded message from different group (commandGroup). Sender was batter:3831 Nov 22, 2004 1:23:35 PM org.jgroups.protocols.UDP handleMessage WARNING: discarded message from different group (NotificationGroup). Sender was batter:3838 -- Bela Ban Lead JGroups / JBossCache callto://belaban ------------------------------------------------------- SF email is sponsored by - The IT Product Guide Read honest & candid reviews on hundreds of IT Products from real users. Discover which products truly live up to the hype. Start reading now. http://productguide.itmanagersjournal.com/

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RE: Messages received from different group.

Maybe bad etiquette to follow up on one's own message but anyways this might help someone else. In my own classes I am not doing anything w.r.t. logging. I tried to point to my log properties file using -Dlog4j.configuration=<my file> .... This didn't work.  When I changed it to -Djava.util.logging.config.file=<my file>.... finally my properties were being applied.   The 'whyj' on the WARNING message below is still outstanding.   Bas From: javagroups-users-admin@xxxxxxxxxxxxxxxxxxxxx [mailto:javagroups-users-admin@xxxxxxxxxxxxxxxxxxxxx] On Behalf Of Ven, Bas (Jacob Bastiaan Ven)Sent: Wednesday, December 01, 2004 10:51 AMTo: javagroups-users@xxxxxxxxxxxxxxxxxxxxxSubject: [javagroups-users] Messages received from different group. I am just starting playing with JGroup and created a class that uses both NotificationBus and the MessageDispatcher (each having their own channel). When running with eclipse, I only see messages when I tell 'm to send them. When I run the same class from the command line, I see a lot of the below warnings. I am suspecting that the log level is different in both cases. What I'd like to know is why am getting these as warnings. It reads to me that one channel receives messages (are these the pings????) send by the other and vice versa. Can anyone explain? Secondly how/where do I set and define the log levels.  I don't care too much about warnings (after understanding them); Thanks,BasWARNING: discarded message from different group (commandGroup). Sender was batter:3831Nov 22, 2004 1:23:31 PM org.jgroups.protocols.UDP handleMessageWARNING: discarded message from different group (commandGroup). Sender was batter:3831Nov 22, 2004 1:23:35 PM org.jgroups.protocols.UDP handleMessageWARNING: discarded message from different group (NotificationGroup). Sender was batter:3838