title: spring data jpa findAll() not working properly
body: <p>I am having below classes</p>
  
  <pre><code>@Entity
  @Table(name = "USR_E_GROUPS")
  public class GroupEntity {
      @Id
      @Column(name = "UIDUSERGROUP")
      @GenericGenerator(name = "generator", strategy = "uuid2")
      @GeneratedValue(generator = "generator")
      private String id;
    .........
     @OneToMany(mappedBy = "group", cascade = CascadeType.PERSIST)
     private List&lt;UserGroupEntity&gt; users;
  </code></pre>
  
  <p>same is for <code>UserGroupEntity</code>
  now if I use <code>groupRepoository.findAll()</code>
  It's is firing select query for every Group and inside different select query for UserGroupEntity. so it's taking too much time.
  I want to make it to fire select with join so it will be a single query.</p>