急于获取休眠状态需要很长时间

Question

I have an hibernate query that runs on server startup to sync data from Mysql to our cache server.

Since the entity has another entity as a child which is always needed Fetch=ALL is used.

When running the query using Hibernate it takes around 3-4 minutes (It's a small table with around 600 records). When running a native SQL query it takes 0.17 sec. What am I missing?

@OneToMany(cascade = CascadeType.ALL, fetch = FetchType.EAGER)
@JoinColumn(name = "hotLeadConfigId")
private Set<HotLeadSpecialPagesEntity> specialPages = new HashSet<HotLeadSpecialPagesEntity>();

Here is the query I am making:

Answer 1

Try to annotate it with @Fetch(FetchMode.JOIN) or @Fetch(FetchMode.SUBSELECT)

see The @Fetch annotation mapping for explanation.