Jason Tedor 80f18ad31a
Use set once for systemd extender (#55497)
When Elasticsearch is starting up, we schedule a thread to repeatedly
let systemd know that we are still in the process of starting up. Today
we use a non-final field for this. This commit changes this to be a set
once so we can mark the field as final, and get stronger guarantees when
reasoning about the state of execution here.
2020-04-20 21:15:04 -04:00
..