[#CONJ-683] Timer task doesn't stop after finishing query

Create MariaDbStatement with queryTimeout and exequte a query.
In this moment will be created new thread with name"MariaDB-timeout-1".
But after finishing the query this thread is still alive.
As result, if we have web application on Tomcat and interrupt it, we get warning:

13-Feb-2019 17:42:10.645 WARNING [Thread-5] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [...] appears to have started a thread named [MariaDb-timeout-1] 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(LockSupport.java:215)

 java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(AbstractQueuedSynchronizer.java:2078)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:1093)

 java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(ScheduledThreadPoolExecutor.java:809)

 java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)

 java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)

 java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)

 java.lang.Thread.run(Thread.java:748)

[CONJ-683] Timer task doesn't stop after finishing query Created: 2019-02-13 Updated: 2019-09-13 Resolved: 2019-09-13
Status:	Closed
Project:	MariaDB Connector/J
Component/s:	Other
Affects Version/s:	2.4.0
Fix Version/s:	N/A

[CONJ-683] Timer task doesn't stop after finishing query Created: 2019-02-13 Updated: 2019-09-13 Resolved: 2019-09-13