I'm migrating two of our ElasticCloud clusters from ElasticSearch v2.* to v5. I've worked through most of the breaking-changes, but I'm a little confused by apparent changes to the indices watcher creates.
On older versions of ElasticSearch / Watcher the watch-history indices were of the form
.watch_history-yyyy.mm.dd, but under x-pack 5.1.2 they seem to have been moved to
.watcher-history-2-yyyy.mm.dd based on
Are there any release notes documenting the changes to the watcher history indices? Were there any other major changes to these indices between versions?
As a bonus question, what exactly is the
.triggered-watches index for? I've never seen it populated with any data, so I assume it's used as a temporary data index for use by Watcher internally.
Thanks for any information you can offer,