6
使用ehCache 2.4.4，我似乎進入了ehCache Segment對象的死鎖。從其他日誌記錄中，我知道'等待線程'，1694最後在該堆棧跟蹤生成之前9小時運行了任何東西。與此同時，1696年已經做了很多其他的工作，所以這個鎖定肯定會被忽略。我該如何解決這個明顯的EhCache死鎖？
我很自信，我並不直接鎖定任何Segment實例，所以我認爲這是圖書館內部的某種問題。有任何想法嗎？
"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
原來，這個問題是無效的。我已經將此文檔（http://ehcache.org/documentation/user-guide/jta#performance）解釋爲指示顯式鎖不使用基於段的鎖定，但事實並非如此。這個死鎖是由我的代碼引起的，有一個鎖定版本不在finally（）塊中。 – sharakan
如果你已經知道了，爲什麼你不回答自己的問題，所以它不會出現在未解答的問題中？ – xmoex