Jim Ferenczi 52443d41cf Stop async search maintenance service on restart (#56982)
This change ensures that we stop the maintenance service on all nodes
when a data node is restarted. This ensures that we don't send
update_by_query requests on the node that is restarted.
This commit also raises the log level to trace for some packages
in order to investigate the failures to acquire a shard lock
after a restart.

Relates #56765
2020-05-26 09:30:33 +02:00
..