[AMQ-6474] Memory leak

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 5.12.0, 5.13.0, 5.14.1
• Fix Version/s: 5.15.0, 5.14.2

Environment

Spring

• Regression: Regression
• Flags: Important
• Assignee: Unassigned
• Reporter: skermani
• Created: 21/Oct/16 14:59
• Updated: 02/Nov/16 16:57
• Resolved: 02/Nov/16 16:46

Description

Hello,

when undeploying a Spring (4) webapp (JDK 1.8.101), we got a memory leak error message on a thread.

AVERTISSEMENT: The web application [venus] appears to have started a thread named [ActiveMQ InactivityMonitor Worker] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
sun.misc.Unsafe.park(Native Method)
java.util.concurrent.locks.LockSupport.parkNanos(Unknown Source)
java.util.concurrent.SynchronousQueue$TransferStack.awaitFulfill(Unknown Source)
java.util.concurrent.SynchronousQueue$TransferStack.transfer(Unknown Source)
java.util.concurrent.SynchronousQueue.poll(Unknown Source)
java.util.concurrent.ThreadPoolExecutor.getTask(Unknown Source)
java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
java.lang.Thread.run(Unknown Source)
oct. 20, 2016 2:50:43 PM org.apache.catalina.loader.WebappClassLoaderBase clearReferencesThreads

when using an older version of active MQ 5.11.4 we don't get the error.

We notice the shutwon of factory thread pool is not made anymore (

inside class AbstractInactivityMonitor , method stopMonitorThreads
this line has been removed: ThreadPoolUtils.shutdown(ASYNC_TASKS);

Could you fix it.

Issue Links

• relates to: AMQ-6482 Possible thread leak ?