Hello Giovanni Lovato,

This log is only informational, and merely states that an optimization couldn't be enabled. Your queries should work fine regardless.

Are you experiencing with setting up multitenancy, or was it already working before your upgrade to Hibernate Search 5.7? Also, does multitenancy work correctly with your Hibernate ORM queries?

Could you please give us more information about the actual issue you are experiencing? An example query with the expected result/actual result would help. It would be even better if you could share the mapping of the entities involved.

And of course, if you know how to reproduce the issue, providing a test case is the best way to get it solved quickly. You can find a test case template here (the one you're looking for is hibernate-search-lucene).