[hibernate-issues] [JIRA] (HHH-16049) Setting a property to its current value with bytecode enhancememt enabled results in unnecessary SQL Update in some (many) cases

Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiNDMxMTE1ZTVk... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16049?atlOrigin=eyJpIjoiNDMxMT... ) HHH-16049 ( https://hibernate.atlassian.net/browse/HHH-16049?atlOrigin=eyJpIjoiNDMxMT... ) Setting a property to its current value with bytecode enhancememt enabled results in unnecessary SQL Update in some (many) cases ( https://hibernate.atlassian.net/browse/HHH-16049?atlOrigin=eyJpIjoiNDMxMT... ) Issue Type: Bug Assignee: Unassigned Components: bytecode-enhancement Created: 16/Jan/2023 06:00 AM Fix Versions: 5.6-backlog, 6.2.0 Priority: Major Reporter: Yoann Rodière ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Affects 6.2.0.CR1 and 5.6 for sure. Essentially, calling entity.setProperty( entity.getProperty() ) triggers an SQL Update, even though that update has no point. Downstream bug report (Quarkus): https://github.com/quarkusio/quarkus/issues/30234 ( https://github.com/quarkusio/quarkus/issues/30234 ) This seems related to https://hibernate.atlassian.net/browse/HHH-15634 ( https://hibernate.atlassian.net/browse/HHH-15634 ) ( https://github.com/hibernate/hibernate-orm/pull/5461 ( https://github.com/hibernate/hibernate-orm/pull/5461 ) ), especially because the problem started to appear in the version of Quarkus that upgraded to the version of Hibernate ORM that fixes https://hibernate.atlassian.net/browse/HHH-15634 ( https://hibernate.atlassian.net/browse/HHH-15634 ). Interestingly, while https://hibernate.atlassian.net/browse/HHH-15634 ( https://hibernate.atlassian.net/browse/HHH-15634 ) was only about lazy basic properties, here the unnecessary updates affect eager properties as well, and even on entities that have only eager properties. So, this probably affects a lot of applications. I will provide a reproducer soon. ( https://hibernate.atlassian.net/browse/HHH-16049#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16049#add-comment?atlOrigin=ey... ) 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#100214- sha1:bdfa1eb )