[jboss-user] [JBoss Cache] - JBoss cache. Concurrency issue

Anton K do-not-reply at jboss.com
Mon Nov 14 12:26:44 EST 2011

Anton K [http://community.jboss.org/people/aaauser] created the discussion

"JBoss cache. Concurrency issue"

To view the discussion, visit: http://community.jboss.org/message/636461#636461

I'm using +JBossCache 'Malagueta' 3.2.0.GA+
I faced with strange issue in production environment, sometimes writes to jboss are lost. I tried to reproduce this situation with simple java application
public static void testCache() {
    Cache cache = new DefaultCacheFactory().createCache(false);
    final Node node = cache.getRoot().addChild(Fqn.fromString("/child1"));
    int threadsCount = 20;
    final CyclicBarrier b = new CyclicBarrier(threadsCount);
    for (int i = 0; i < threadsCount; i++) {
        final long j = i;
        new Thread(new Runnable() {
            public void run() {
                try {
                    String name = RandomGenerator.getRandomName(4);
                    node.put(j, name);
                    String nameFromCache = (String) node.get(j);
                    if (!name.equals(nameFromCache)) {
                } catch (Exception e) {

>From time to time, this test output "error", which i run from static void mai. 1 of 3 runs return "error" msg, node simply return "null".  I can't reproduce it on every machine

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