Below is the complete stack trace of AsyncGetter thread during issue time,

"AsyncGetter-1027-thread-1" #3088929 daemon prio=5 os_prio=0 tid=0x4400c4400000 nid=0x30ee  [ JVM locked by VM waiting on VM lock 'self_suspend_monitor for TID 12526', polling bits: safep ]
   java.lang.Thread.State: TIMED_WAITING (parking)
	at java.util.concurrent.locks.LockSupport.parkNanos(LockSupport.java:215)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.doAcquireSharedNanos(AbstractQueuedSynchronizer.java:1037)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer.tryAcquireSharedNanos(AbstractQueuedSynchronizer.java:1328)
	at java.util.concurrent.Semaphore.tryAcquire(Semaphore.java:409)
	at com.mongodb.internal.connection.ConcurrentPool.acquirePermit(ConcurrentPool.java:197)
	at com.mongodb.internal.connection.ConcurrentPool.get(ConcurrentPool.java:140)
	at com.mongodb.internal.connection.DefaultConnectionPool.getPooledConnection(DefaultConnectionPool.java:271)
	at com.mongodb.internal.connection.DefaultConnectionPool.access$13(DefaultConnectionPool.java:270)
	at com.mongodb.internal.connection.DefaultConnectionPool$1.run(DefaultConnectionPool.java:176)
	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)
	
	
Post application restart:

"AsyncGetter-275-thread-1" #928509 daemon prio=5 os_prio=0 tid=0x4400ba000000 nid=0x5ae  [ JVM locked by VM (w/poll advisory bit) waiting on VM lock 'self_suspend_monitor for TID 1454', polling bits: safep rstak gpgc_clean_new gpgc_clean_old ]
   java.lang.Thread.State: WAITING (parking)
	at java.util.concurrent.locks.LockSupport.park(LockSupport.java:175)
	at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.await(AbstractQueuedSynchronizer.java:2039)
	at java.util.concurrent.LinkedBlockingQueue.take(LinkedBlockingQueue.java:442)
	at java.util.concurrent.ThreadPoolExecutor.getTask(ThreadPoolExecutor.java:1074)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1134)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
	at java.lang.Thread.run(Thread.java:748)