[jira] [Created] (RATIS-1603) Huge amount of threads appear and service OOM

[Baolong Mao (Jira)]

Title: Message Title

Baolong Mao created an issue   Ratis / RATIS-1603 Huge amount of threads appear and service OOM Issue Type: Bug Affects Versions: 2.0.0 Assignee: Unassigned Attachments: image-2022-06-29-09-33-28-818.png, image-2022-06-29-09-37-07-089.png Created: 29/Jun/22 01:38 Priority: Major Reporter: Baolong Mao The callstack are same for the 20k threads "java.util.concurrent.ThreadPoolExecutor$Worker@64f771ea[State = -1, empty queue]" #486880 daemon prio=5 os_prio=0 cpu=0.14ms elapsed=35.35s allocated=1696B defined_classes=0 tid=0x00007f136fb65800 nid=0x2130e1 waiting on condition  [0x00007f0f94ccf000]    java.lang.Thread.State: TIMED_WAITING (parking)     at jdk.internal.misc.Unsafe.park(java.base@11.0.15-ga/Native Method)     - parking to wait for  <0x00007f1e0178ef68> (a java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject)     at java.util.concurrent.locks.LockSupport.parkNanos(java.base@11.0.15-ga/LockSupport.java:234)     at java.util.concurrent.locks.AbstractQueuedSynchronizer$ConditionObject.awaitNanos(java.base@11.0.15-ga/AbstractQueuedSynchronizer.java:2123)     at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(java.base@11.0.15-ga/ScheduledThreadPoolExecutor.java:1182)     at java.util.concurrent.ScheduledThreadPoolExecutor$DelayedWorkQueue.take(java.base@11.0.15-ga/ScheduledThreadPoolExecutor.java:899)     at java.util.concurrent.ThreadPoolExecutor.getTask(java.base@11.0.15-ga/ThreadPoolExecutor.java:1054)     at java.util.concurrent.ThreadPoolExecutor.runWorker(java.base@11.0.15-ga/ThreadPoolExecutor.java:1114)     at java.util.concurrent.ThreadPoolExecutor$Worker.run(java.base@11.0.15-ga/ThreadPoolExecutor.java:628)     at java.lang.Thread.run(java.base@11.0.15-ga/Thread.java:829) I found the problem is The following code, we should better give a maxsize for the ScheduledThreadPoolExecutor   Add Comment   This message was sent by Atlassian Jira (v8.20.10#820010-sha1:ace47f9) If image attachments aren't displayed, see this article.