liuke created NIFI-9603:
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Summary: When a processor group is stopped or started in the UI,
the thread cannot execute any tasks
Key: NIFI-9603
URL: https://issues.apache.org/jira/browse/NIFI-9603
Project: Apache NiFi
Issue Type: Bug
Components: Core Framework
Affects Versions: 1.9.0
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"
Reporter: liuke
Attachments: description.docx
See the attachment for the picture
Problem phenomenon
# This problem is probably triggered when a processor group (including
multiple processors) is stopped in the interface
# Nifi cluster interface activethreadcount becomes 0
# The task cannot be executed. The UI shows that the thread is stuck
# Analysis using jstack，{*}The stack information is intercepted many times at
a long time interval,{*} and the information is the following results: total
300 thread, one of which is timed_ Waiting, stack information is，The remaining
299 are waiting and the stack information is
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