An Indexima cluster can be blocked with the following error in the log:
java.lang.OutOfMemoryError: unable to create new native thread
This error indicates that Java was unable to create a new thread. Multiple system limitations can trigger this issue. In case you encounter this error, please check the following system parameters:
/etc/security/limits.confon a Linux system.
DefaultTasksMaxparameter of systemd with
systemctl show --property DefaultTasksMax(helpful article: https://www.suse.com/support/kb/doc/?id=000015901)