[NIFI-9603] When a processor group is stopped or started in the UI, the thread pool cannot execute any tasks

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 1.9.0
• Component/s: Core Framework
• Environment: nifi version:1.9.0 ; Server：CentOS Linux release 7.9.2009 ; Deployment mode: 5-node cluster ; The maximum timer driven thread count is set to 350 ; JDK version is "1.8.0_181"
• Flags: Important
• Assignee: Unassigned
• Reporter: liuke
• Created: 20/Jan/22 11:49
• Updated: 21/Jan/22 13:34

Description

See the attachment for the picture

 

Problem phenomenon

1. This problem is probably triggered when a processor group (including multiple processors) is stopped in the interface
2. Nifi cluster UI “Active Thread Count”becomes 0
3. The task cannot be executed. The UI shows that the thread is stuck
4. Analysis using jstack，The stack information is intercepted many times at a long time interval, and the information is the following results:    total 350 thread, one of which is timed_ Waiting, The remaining 349 are waiting