pbcast.NAKACK needs to be ahead of pbcast.STABLE

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Scott Stark
Chief Technology Officer
JBoss Group, LLC
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Tom Elrod wrote:

I am using a newer version of JGroups and am getting the following error on code that previously worked in JavaGroups:

ChannelException: JChannel(): java.lang.Exception: Configurator.sanityCheck(): event GET_DIGEST_STABLE is required by STABLE, but not provided by any of the layers below
at org.jgroups.JChannel.<init>(JChannel.java:151)


I know that there were some changes in stack in the latest version (but can't find reference to change requiring GET_DIGEST_STABLE. My properties are as follows and was wondering what I need to change.

private String props = "UDP(mcast_recv_buf_size=64000;mcast_send_buf_size=32000;" +

"mcast_port=45566;use_packet_handler=false;ucast_recv_buf_size=64000;" +

"mcast_addr=228.8.8.8;loopback=false;ucast_send_buf_size=32000;ip_ttl=32):" +
"PING(timeout=2000;num_initial_members=3):" +
"MERGE2(max_interval=10000;min_interval=5000):" +
"FD(timeout=2000;max_tries=3;shun=true):" +
"VERIFY_SUSPECT(timeout=1500):" +
"pbcast.STABLE(desired_avg_gossip=20000):" +


"pbcast.NAKACK(max_xmit_size=8192;gc_lag=50;retransmit_timeout=600,1200,2400,4800):" +
"UNICAST(timeout=1200,2400,3600):" +
"FRAG(frag_size=8192;down_thread=false;up_thread=false):" +


"pbcast.GMS(print_local_addr=true;join_timeout=3000;join_retry_timeout=2000;shun=true)";



Thanks.

-Tom




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