DO NOT REPLY [Bug 45222] concurrent startup of ReplicatedMap leads to inconsistent state.

[bu...@apache.org]

https://issues.apache.org/bugzilla/show_bug.cgi?id=45222





--- Comment #1 from Robert Newson <ro...@gmail.com>  2008-06-17 15:19:34 PST ---

Here's the simplest code to reproduce it. Just start this on four machines at
the same time (I used clusterssh). Most of the time each box will print a
different value from 1-4.

As a meta-question, is ReplicatedMap a supported Tribes feature or a demo? I've
been stung on this kind of thing with JGroups before (their .blocks are almost
all demo code, apparently).

        public static void main(String[] args) throws Exception {
                final GroupChannel channel = new GroupChannel();
                final ReplicatedMap map = new ReplicatedMap(null, channel, 0,
"map",
                                null);
                channel.start(Channel.DEFAULT);
                map.put(InetAddress.getLocalHost(), "1");
                while (true) {
                        System.out.printf("member_count: %,d, map_size: %,d\n",
channel
                                        .getMembers().length, map.size());
                        SECONDS.sleep(5);
                }
        }


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