Hi Alex Laptseu,

Right now I'm suspecting some timing issue, as if the massindexer started before the index have actually been created.

Do you think you could provide a test case demonstrating the issue? Like I said in a previous posts, our own tests do not exhibit this behavior (they work fine), so there's probably some specifics in your setup that is not present in our tests. It's not obvious what exactly are these specifics, though, so maybe it'll be easier if you just copy/paste the relevant code into a test case and strip it down of any confidential information.

You can find test case templates here: https://github.com/hibernate/hibernate-test-case-templates/tree/master/search
You'll want to use the hibernate-search-elasticsearch template.

Thanks!
Yoann