Not sure that this is a correct implementation:

if ( schemaManagementStrategy == IndexSchemaManagementStrategy.NONE ) {
			schemaCreator.checkIndexExists( actualIndexName, schemaManagementExecutionOptions );
			return false;
		}

and

org.hibernate.search.elasticsearch.schema.impl.DefaultElasticsearchSchemaCreator#checkIndexExists

In previous versions (beta2..3..4) it wasn't the case...

In my case some indexes or all of them may not exist during application initial startup and I am going to do on demand full reindexing to recreate them.

With current implementation it's doesn't seem to be possible...