When the business thread pool is full, we need to know what resources/conditions are waiting for the thread , to find the bottleneck point of the system or abnormal point. dubbo automatically export thread stack through Jstack to keep the scene for easy to troubleshoot the problem.
Default policy:
Specified export file path:
# dubbo.properties
dubbo.application.dump.directory=/tmp
<dubbo:application ...>
<dubbo:parameter key="dump.directory" value="/tmp" />
</dubbo:application>