we have some mid sized cluster around ~70 nodes running on Debian Stretch (9.x) with OpenJDK-8. We will need to add some extra nodes with Debian Buster, where is present OpenJDK-11.
Both versions of OpenJDK is ok with Elasticsearch 6.8.6 according to compatibiltiy matrix. But is it possible to run cluster with some nodes with OpenJDK-8 and some nodes with OpenJDK-11?
Thx for answer guys!