Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HSEARCH-4678 ( https://hibernate.atlassian.net/browse/HSEARCH-4678?atlOrigin=eyJpIjoiMDF... ) Re: select nextval ('hsearch_outbox_event_generator ') performs very slowly on CockroachDB，why not use UUID ( https://hibernate.atlassian.net/browse/HSEARCH-4678?atlOrigin=eyJpIjoiMDF... ) No, it is already present in 6.1. But as I said, it’s also completely unsupported, so it’s also undocumented. At best it’s a workaround until we fix https://hibernate.atlassian.net/browse/HSEARCH-4678 ( https://hibernate.atlassian.net/browse/HSEARCH-4678 ) / https://hibernate.atlassian.net/browse/HSEARCH-4716 ( https://hibernate.atlassian.net/browse/HSEARCH-4716 ). See org.hibernate.search.mapper.orm.coordination.outboxpolling.cfg.spi.HibernateOrmMapperOutboxPollingSpiSettings#OUTBOXEVENT_ENTITY_MAPPING , i.e. the configuration property hibernate.search.coordination.outboxevent.entity.mapping. It’s used internally here ( https://github.com/hibernate/hibernate-search/blob/df16025b1fc6c351b73a4c... ) , if that helps 🙂 ( https://hibernate.atlassian.net/browse/HSEARCH-4678#add-comment?atlOrigin... ) Add Comment ( https://hibernate.atlassian.net/browse/HSEARCH-4678#add-comment?atlOrigin... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100208- sha1:492d0ce )