[hibernate-issues] [JIRA] (HHH-16453) Loading an Entity with two eager collections, produces duplicates when one of the collection is a a bag

Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiYWMxNTdmNGRl... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16453?atlOrigin=eyJpIjoiYWMxNT... ) HHH-16453 ( https://hibernate.atlassian.net/browse/HHH-16453?atlOrigin=eyJpIjoiYWMxNT... ) Loading an Entity with two eager collections, produces duplicates when one of the collection is a a bag ( https://hibernate.atlassian.net/browse/HHH-16453?atlOrigin=eyJpIjoiYWMxNT... ) Issue Type: Bug Affects Versions: 6.2.0 Assignee: Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Components: hibernate-core Created: 11/Apr/2023 03:43 AM Priority: Major Reporter: Andrea Boriero ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) Given @Entity(name = "EntityB" ) public static class EntityB { ... @OneToMany(fetch = FetchType.EAGER) Collection<EntityC> attributes = new LinkedList<>(); @OneToMany(fetch = FetchType.EAGER) Set<EntityD> entityDS = new HashSet<>(); } @Entity(name = "EntityC" ) public static class EntityC { ... } @Entity(name = "EntityD" ) public static class EntityD { ... } the test @Test public void testIt(SessionFactoryScope scope) { scope.inTransaction( session -> { EntityC c = new EntityC( 1l, "c" ); EntityC c1 = new EntityC( 2l, "c1" ); EntityD d = new EntityD( 1l, "d" ); EntityD d1 = new EntityD( 2l, "d1" ); EntityD d2 = new EntityD( 3l, "d2" ); EntityB b = new EntityB( 1l, "b" ); b.addAttribute( c ); b.addAttribute( c1 ); b.addEntityD( d ); b.addEntityD( d1 ); b.addEntityD( d2 ); session.save( c ); session.save( c1 ); session.save( d ); session.save( d1 ); session.save( d2 ); session.save( b ); } ); scope.inTransaction( session -> { EntityB entityB = session.find( EntityB.class, 1l ); assertThat( entityB.getAttributes().size() ).isEqualTo( 2 ); } ); } fails because entityB.getAttributes().size() is equal to 6. ( https://hibernate.atlassian.net/browse/HHH-16453#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16453#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#100221- sha1:9ff53d8 )