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From "Luke Quinane (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-4711) Hung thread after another thread is interrupted
Date Wed, 23 Jun 2010 23:36:59 GMT
Hung thread after another thread is interrupted
-----------------------------------------------

                 Key: DERBY-4711
                 URL: https://issues.apache.org/jira/browse/DERBY-4711
             Project: Derby
          Issue Type: Bug
          Components: Services
    Affects Versions: 10.5.3.0
         Environment: Windows server 2008
            Reporter: Luke Quinane


We've seen a problem today where we have several threads querying our database and when one
gets interrupted the others are stuck waiting for a lock. Here is the stack trace for the
stuck thread(s):

daemon prio=4
"DefaultExecutorService-pool-1-thread-47" Id=98 WAITING on org.apache.derby.impl.services.locks.ActiveLock@6e6f45a1
	at java.lang.Object.wait(Native Method)
	-  waiting on org.apache.derby.impl.services.locks.ActiveLock@6e6f45a1
	at java.lang.Object.wait(Object.java:485)
	at org.apache.derby.impl.services.locks.ActiveLock.waitForGrant(ActiveLock.java:115)
	at org.apache.derby.impl.services.locks.ConcurrentLockSet.lockObject(ConcurrentLockSet.java:463)
	at org.apache.derby.impl.services.locks.ConcurrentLockSet.zeroDurationLockObject(ConcurrentLockSet.java:855)
	at org.apache.derby.impl.services.locks.AbstractPool.zeroDurationlockObject(AbstractPool.java:297)
	at org.apache.derby.impl.services.locks.ConcurrentPool.zeroDurationlockObject(ConcurrentPool.java:28)
	at org.apache.derby.impl.store.raw.xact.RowLocking2nohold.lockRecordForRead(RowLocking2nohold.java:89)
	at org.apache.derby.impl.store.access.heap.HeapController.lockRow(HeapController.java:520)
	at org.apache.derby.impl.store.access.heap.HeapController.lockRow(HeapController.java:638)
	at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3.lockRowOnPage(B2IRowLocking3.java:309)
	at org.apache.derby.impl.store.access.btree.index.B2IRowLocking3._lockScanRow(B2IRowLocking3.java:599)
	at org.apache.derby.impl.store.access.btree.index.B2IRowLockingRR.lockScanRow(B2IRowLockingRR.java:105)
	at org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(BTreeForwardScan.java:305)
	at org.apache.derby.impl.store.access.btree.BTreeScan.fetchNextGroup(BTreeScan.java:1585)
	at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.reloadArray(BulkTableScanResultSet.java:327)
	at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.getNextRowCore(BulkTableScanResultSet.java:282)
	at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(BasicNoPutResultSetImpl.java:460)
	at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(EmbedResultSet.java:427)
	-  locked org.apache.derby.impl.jdbc.EmbedConnection40@445d374b
	at org.apache.derby.impl.jdbc.EmbedResultSet.next(EmbedResultSet.java:371)
        ...



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