https://jira.mariadb.org/browse/MDEV-26352
[MDEV-26352] Add new thread states for certain WSREP scenarios - Jira
add new threadmdev
https://tipsaroundthehome.blogspot.com/2018/04/add-new-thread-within-ring.html
muskaan's T*I*P*S: Add new thread WITHIN a ring
tatting tutorial how to add new thread WITHIN a ring
add new threadi pmuskaan