6
使用ehCache 2.4.4，我似乎进入了ehCache Segment对象的死锁。从其他日志记录中，我知道'等待线程'，1694最后在该堆栈跟踪生成之前9小时运行了任何东西。与此同时，1696年已经做了很多其他的工作，所以这个锁定肯定会被忽略。我该如何解决这个明显的EhCache死锁？
我很自信，我并不直接锁定任何Segment实例，所以我认为这是图书馆内部的某种问题。有任何想法吗？
"Model Executor - 1696" Id=1696 in TIMED_WAITING on lock=java.u[email protected]92eb1ed
at sun.misc.Unsafe.park(Native Method)
at java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(Unknown Source)
at java.util.concurrent.PriorityBlockingQueue.poll(Unknown Source)
at com.rtrms.application.modeling.local.BlockingTaskList.takeTask(BlockingTaskList.java:20)
at com.rtrms.application.modeling.local.ModelExecutor.executeNextTask(ModelExecutor.java:71)
at com.rtrms.application.modeling.local.ModelExecutor.run(ModelExecutor.java:46)
Locked synchronizers: count = 1
- [email protected]3d767f
"Model Executor - 1694" Id=1694 in WAITING on loc[email protected]4a3d767f
owned by Model Executor - 1696 Id=1696
at sun.misc.Unsafe.park(Native Method)
at java.util.concurrent.locks.LockSupport.park(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireShared(Unknown Source)
at java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireShared(Unknown Source)
at java.util.concurrent.locks.ReentrantReadWriteLock$ReadLock.lock(Unknown Source)
at net.sf.ehcache.store.compound.Segment.unretrievedGet(Segment.java:248)
at net.sf.ehcache.store.compound.CompoundStore.unretrievedGet(CompoundStore.java:191)
at net.sf.ehcache.store.compound.impl.DiskPersistentStore.containsKeyInMemory(DiskPersistentStore.java:72)
at net.sf.ehcache.Cache.searchInStoreWithStats(Cache.java:1884)
at net.sf.ehcache.Cache.get(Cache.java:1549)
at com.rtrms.amoeba.cache.DistributedModeledSecurities.get(DistributedModeledSecurities.java:57)
at com.rtrms.amoeba.modeling.AssertPersistedModeledSecurities.get(AssertPersistedModeledSecurities.java:44)
at com.rtrms.application.modeling.tasks.ExpandableModelingTask.getNextUnexecutedTask(ExpandableModelingTask.java:35)
at com.rtrms.application.modeling.local.BlockingTaskList.takeTask(BlockingTaskList.java:36)
at com.rtrms.application.modeling.local.ModelExecutor.executeNextTask(ModelExecutor.java:71)
at com.rtrms.application.modeling.local.ModelExecutor.run(ModelExecutor.java:46)
Locked synchronizers: count = 0
原来，这个问题是无效的。我已经将此文档（http://ehcache.org/documentation/user-guide/jta#performance）解释为指示显式锁不使用基于段的锁定，但事实并非如此。这个死锁是由我的代码引起的，有一个锁定版本不在finally（）块中。 – sharakan
如果你已经知道了，为什么你不回答自己的问题，所以它不会出现在未解答的问题中？ – xmoex