Memory leak using enums in native query

[tsavaph]

Using the native query in code below I've found a memory leak.

@Service
@RequiredArgsConstructor
public class TestService {

    private final List<Status> statuses = List.of(Status.NOT_ACTIVE, Status.ACTIVE);
    private final TestRepository repository;

    @Transactional
    public void test() {
        var result = repository.findByStatusForUpdate(statuses);
        // todo
    }

}

public interface TestRepository extends JpaRepository<TestEntity, Long> {

    @Query(value = "SELECT * FROM test WHERE status_dict_id in (:statuses) FOR UPDATE SKIP LOCKED", nativeQuery = true)
    List<TestEntity> findByStatusForUpdate(List<Status> statuses);

}

@Entity
public class TestEntity {

    @Id
    private Long id;

    @Column(name = "status_dict_id")
    @Enumerated(EnumType.ORDINAL)
    private Status status;

}

public enum Status {

    UNDEFINED,
    BLOCKED,
    ACTIVE,
    NOT_ACTIVE,

}

Hibernate keeps statuses and and consumes memory. Database - postgres.

[mp911de]

How does a memory accumulation relate to Spring Data? Have you tried without Spring Data?

[tsavaph]

How does a memory accumulation relate to Spring Data? Have you tried without Spring Data?

My fault :), it is only a Hibernate issue. Tried pure Hibernate config without spring-data-jpa - same problem, high heap accumulation.

[schauder]

If you open a ticket with Hibernate, please leave a link here, so others have a better chance of finding it.

Thanks

[tsavaph]

Created a bug for Hibernate https://hibernate.atlassian.net/browse/HHH-19276