신동훈 ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=63fc1ff... ) *created* an issue Hibernate ORM ( https://hibernate.atlassian.net/browse/HHH?atlOrigin=eyJpIjoiMmVhMzIxMGU2... ) / Bug ( https://hibernate.atlassian.net/browse/HHH-16862?atlOrigin=eyJpIjoiMmVhMz... ) HHH-16862 ( https://hibernate.atlassian.net/browse/HHH-16862?atlOrigin=eyJpIjoiMmVhMz... ) Bad logs that occur when query collections when batchsize is applied ( https://hibernate.atlassian.net/browse/HHH-16862?atlOrigin=eyJpIjoiMmVhMz... ) Issue Type: Bug Affects Versions: 6.2.2, 6.2.3, 6.2.4, 6.2.5 Assignee: Unassigned Attachments: 스크린샷 2023-06-28 오후 7.00.04.png Components: hibernate-core Created: 28/Jun/2023 03:01 AM Environment: any Labels: core Priority: Minor Reporter: 신동훈 ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=63fc1ff... ) The remaining elements of the array are returned as null when querying the collection after applying the batch size. For example, if the batch size is 100 and only 1 id is entered, 99 nulls are bound.Below is the example code @Entity public class Member { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id" ) private Long id; @ManyToOne @JoinColumn(name = "team_id" ) private Team team; protected Member() { } public void setId( Long id) { this.id = id; } public void setTeam(Team team) { this.team = team; } public Long id() { return id; } public Team team() { return team; } } @Entity public class Team { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Column(name = "id" ) private Long id; @OneToMany(mappedBy = "team" ) private List<Member> members = new ArrayList<>(); public void addMember(Member member) { members.add(member); } public Long id() { return id; } public List<Member> members() { return members; } } @Transactional @SpringBootTest class MemberTest { @Autowired private EntityManager em; @Test void error() { Team team = new Team(); em.persist(team); em.flush(); Member member = new Member(); member.setTeam(team); em.persist(member); em.flush(); em.clear(); Team team1 = em.find(Team.class, 1L); System.out.println(team1.members().size()); } } application.yml --------------- logging: level: root: info org.hiberante. SQL: debug org.hibernate.orm.jdbc. bind: trace org.apache.coyote.http 11 : debug #Http ???? ?? ??? spring: datasource: driver-class- name: org.h 2.Driver url: jdbc:h 2 :mem:testdb username: sa password: h 2 : console: enabled: true path: /h 2 -console jpa: show- sql: true open-in- view: false database- platform: org.hibernate.dialect.H 2 Dialect properties: hibernate: format_ sql: true use_sql_ comments: true highlight_ sql: true default_batch_fetch_ size: 100 hibernate: ddl- auto: create and below is error log image. ( https://hibernate.atlassian.net/rest/api/3/attachment/content/50479 ) ( https://hibernate.atlassian.net/browse/HHH-16862#add-comment?atlOrigin=ey... ) Add Comment ( https://hibernate.atlassian.net/browse/HHH-16862#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#100227- sha1:534ec1c )