Description

The latest JGroups patch version avoid thread pinning in several places, with JDBC_PING2 being probably the most prominent.

• JGRP-2861 Avoiding JDBC_PING2 synchronized as it would pin the threads when using virtual threads belaban/JGroups#877
• JGRP-2864 Avoiding synchronized in BaseServer as it would pin the threads when using virtual threads belaban/JGroups#878
• JGRP-2863 Avoiding synchronized in GMS.installView as it would pin the threads when using virtual threads belaban/JGroups#879

Discussion

No response

Motivation

A pinned virtual thread could block progress, especially if the number of CPU cores is small. In #37197 we ensure a thread pool of at least two, still this seems like a workaround until thread pinning is fixed. It might also affect the runtime behavior if you go from 1 to 2 CPU cores.

Details

I'll provide a pull request.