lqm created POOL-281:
------------------------
Summary: Dead Loop
Key: POOL-281
URL: https://issues.apache.org/jira/browse/POOL-281
Project: Commons Pool
Issue Type: Bug
Affects Versions: 2.2
Environment: Linux,JDK1.6.23,Tomcat6
Reporter: lqm
Fix For: 2.2
I use the pool2 as a tcp connection pool,when I start tomcat,one thread occur
an infinite loop In the advance() method,but it sometimes happens, not
always,the java statck information is as follows:
Thread 2194: (state = IN_JAVA)
- org.apache.commons.pool2.impl.LinkedBlockingDeque$AbstractItr.advance()
@bci=42, line=1163 (Compiled frame; information may be imprecise)
- org.apache.commons.pool2.impl.LinkedBlockingDeque$AbstractItr.next()
@bci=29, line=1184 (Interpreted frame)
- org.apache.commons.pool2.impl.GenericKeyedObjectPool.clearOldest() @bci=85,
line=741 (Interpreted frame)
-
org.apache.commons.pool2.impl.GenericKeyedObjectPool.create(java.lang.Object)
@bci=56, line=991 (Interpreted frame)
-
org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(java.lang.Object,
long) @bci=59, line=356 (Interpreted frame)
-
org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(java.lang.Object)
@bci=6, line=277 (Interpreted frame)
Thread 2195: (state = BLOCKED)
- sun.misc.Unsafe.park(boolean, long) @bci=0 (Interpreted frame)
- java.util.concurrent.locks.LockSupport.park(java.lang.Object) @bci=14,
line=158 (Interpreted frame)
-
java.util.concurrent.locks.AbstractQueuedSynchronizer.parkAndCheckInterrupt()
@bci=1, line=811 (Interpreted frame)
-
java.util.concurrent.locks.AbstractQueuedSynchronizer.acquireQueued(java.util.concurrent.locks.AbstractQueuedSynchronizer$Node,
int) @bci=48, line=842 (Interpreted frame)
-
java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(long)
@bci=112, line=2033 (Interpreted frame)
- org.apache.commons.pool2.impl.LinkedBlockingDeque.pollFirst(long,
java.util.concurrent.TimeUnit) @bci=50, line=569 (Interpreted frame)
-
org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(java.lang.Object,
long) @bci=105, line=363 (Interpreted frame)
-
org.apache.commons.pool2.impl.GenericKeyedObjectPool.borrowObject(java.lang.Object)
@bci=6, line=277 (Interpreted frame)
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