[infinispan-issues] [JBoss JIRA] (ISPN-6869) Deadlock during stopping CacheManager
Gustavo Fernandes (JIRA)
issues at jboss.org
Mon May 22 12:06:00 EDT 2017
[ https://issues.jboss.org/browse/ISPN-6869?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gustavo Fernandes updated ISPN-6869:
------------------------------------
Status: Resolved (was: Pull Request Sent)
Resolution: Done
> Deadlock during stopping CacheManager
> -------------------------------------
>
> Key: ISPN-6869
> URL: https://issues.jboss.org/browse/ISPN-6869
> Project: Infinispan
> Issue Type: Bug
> Components: Core
> Affects Versions: 9.0.0.Alpha3
> Reporter: Vojtech Juranek
> Assignee: Vojtech Juranek
> Attachments: server.log.gz
>
>
> When new cache is started during ISPN shutdown, it can result into a deadlock.
> When new cache is created, first {{DefaultCacheManager.CacheWrapper}} is created with a latch. This latch is release once cache is fully started. If in meantime {{DefaultCacheManager#stop}} is called, it will first stop and lock {{GlobalComponentRegistry}} and after that will try to access and stop all caches. However, if there is present half-created cache (one with latch in {{DefaultCacheManager.CacheWrapper}} not released yet), if will result into a deadlock, as {{cache#start}} tries to access and lock {{GlobalComponentRegistry}}, already lock by {{DefaultCacheManager}}.
> Relevant pieces of stack traces are bellow, whole stack trace is attached.
> Locking of {{GlobalComponentRegistry}} by {{DefaultCacheManager#stop}}:
> {noformat}
> at org.infinispan.factories.AbstractComponentRegistry.stop(AbstractComponentRegistry.java:569)
> - locked <0x00000000e1606fc0> (a org.infinispan.factories.GlobalComponentRegistry)
> at org.infinispan.factories.GlobalComponentRegistry.stop(GlobalComponentRegistry.java:282)
> - locked <0x00000000e1606fc0> (a org.infinispan.factories.GlobalComponentRegistry)
> at org.infinispan.manager.DefaultCacheManager.stop(DefaultCacheManager.java:699)
> - locked <0x00000000e1606bb0> (a org.infinispan.manager.DefaultCacheManager)
> at org.infinispan.manager.impl.AbstractDelegatingEmbeddedCacheManager.stop(AbstractDelegatingEmbeddedCacheManager.java:173)
> {noformat}
> and later of waiting for cache latch:
> {noformat}
> at sun.misc.Unsafe.park(Native Method)
> - parking to wait for <0x00000000fd59db80> (a java.util.concurrent.CountDownLatch$Sync)
> at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(AbstractQueuedSynchronizer.java:836)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedInterruptibly(AbstractQueuedSynchronizer.java:997)
> at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireSharedInterruptibly(AbstractQueuedSynchronizer.java:1304)
> at java.util.concurrent.CountDownLatch.await(CountDownLatch.java:231)
> at org.infinispan.manager.DefaultCacheManager$CacheWrapper.getCache(DefaultCacheManager.java:968)
> {noformat}
> Waiting for a lock for {{GlobalComponentRegistry}} when cache is created:
> {noformat}
> at org.infinispan.factories.AbstractComponentRegistry.getOrCreateComponent(AbstractComponentRegistry.java:277)
> - waiting to lock <0x00000000e1606fc0> (a org.infinispan.factories.GlobalComponentRegistry)
> at org.infinispan.factories.GlobalComponentRegistry.getTimeService(GlobalComponentRegistry.java:167)
> at org.infinispan.factories.ComponentRegistry.getTimeService(ComponentRegistry.java:271)
> at org.infinispan.distexec.DefaultExecutorService.<init>(DefaultExecutorService.java:190)
> [...]
> org.infinispan.manager.DefaultCacheManager.wireAndStartCache(DefaultCacheManager.java:636)
> at org.infinispan.manager.DefaultCacheManager.createCache(DefaultCacheManager.java:587)
> at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:452)
> at org.infinispan.manager.DefaultCacheManager.getCache(DefaultCacheManager.java:438)
> {noformat}
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