Is there a way to update multiple documents by one query in elastic search 2? Or Add a new field in all documents with a query?
this is currently not possible but in Elasticsearch 5.0 you will be able to use the reindex plugin for that. We also intend to backport this plugin to 2.x.
Thanks Daniel for the info. I was wondering if you have timeline in mind
unfortunately, I have no timeline for the backport. If you want to stay up-to-date on what's happening I suggest you subscribe to the reindex API Github issue.