[infinispan-issues] [JBoss JIRA] Created: (ISPN-1017) Livelock creating lots of cache managers in parallel

[Dan Berindei (JIRA)]

Livelock creating lots of cache managers in parallel
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                 Key: ISPN-1017
                 URL: https://issues.jboss.org/browse/ISPN-1017
             Project: Infinispan
          Issue Type: Bug
          Components: Locking and Concurrency
            Reporter: Dan Berindei
            Assignee: Dan Berindei


While running the HotRod client test suite I sometimes get a livelock and the thread dump shows a lot of stack traces like this:

"pool-2-thread-20" prio=10 tid=0x6a63ec00 nid=0x2d71 runnable [0x6943e000]
   java.lang.Thread.State: RUNNABLE
        at java.util.HashMap.get(HashMap.java:320)
        at org.infinispan.factories.ComponentRegistry.isGlobal(ComponentRegistry.java:138)
        at org.infinispan.factories.ComponentRegistry.registerComponent(ComponentRegistry.java:130)
        at org.infinispan.factories.AbstractComponentRegistry.registerComponent(AbstractComponentRegistry.java:185)
        at org.infinispan.factories.AbstractComponentRegistry.getOrCreateComponent(AbstractComponentRegistry.java:326)
        at org.infinispan.factories.AbstractComponentRegistry.invokeInjectionMethod(AbstractComponentRegistry.java:254)
        at org.infinispan.factories.AbstractComponentRegistry$Component.injectDependencies(AbstractComponentRegistry.java:843)
        at org.infinispan.factories.AbstractComponentRegistry.registerComponent(AbstractComponentRegistry.java:228)
        at org.infinispan.factories.ComponentRegistry.registerComponent(ComponentRegistry.java:133)
        at org.infinispan.factories.AbstractComponentRegistry.registerComponent(AbstractComponentRegistry.java:185)
        at org.infinispan.factories.InternalCacheFactory.bootstrap(InternalCacheFactory.java:102)
        at org.infinispan.factories.InternalCacheFactory.createAndWire(InternalCacheFactory.java:77)
        at org.infinispan.factories.InternalCacheFactory.createCache(InternalCacheFactory.java:61)
        at org.infinispan.manager.DefaultCacheManager.createCache(DefaultCacheManager.java:538)
        at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:443)
        at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:412)
        at org.infinispan.server.core.AbstractProtocolServer.startDefaultCache(AbstractProtocolServer.scala:108)
        at org.infinispan.server.core.AbstractProtocolServer.start(AbstractProtocolServer.scala:69)
        at org.infinispan.server.hotrod.HotRodServer.start(HotRodServer.scala:48)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil$.startHotRodServer(HotRodTestingUtil.scala:77)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil$.startHotRodServer(HotRodTestingUtil.scala:57)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil$.startHotRodServer(HotRodTestingUtil.scala:46)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil$.startHotRodServer(HotRodTestingUtil.scala:43)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil$.startHotRodServer(HotRodTestingUtil.scala:37)
        at org.infinispan.server.hotrod.test.HotRodTestingUtil.startHotRodServer(HotRodTestingUtil.scala)
        at org.infinispan.client.hotrod.TestHelper.startHotRodServer(TestHelper.java:34)
        at org.infinispan.client.hotrod.CacheManagerStoppedTest.createCacheManager(CacheManagerStoppedTest.java:31)

This seems to be caused by the fact that the componentScopesLookup map is not synchronized and multiple threads write to it at the same time, leaving it in an invalid state.


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