在elasticsearch存储库中缓慢保存

Question

我使用spring-data-elasticsearch（https://github.com/spring-projects/spring-data-elasticsearch），我有两个实体类：

@Document(indexName = "aa", type = "aa", shards = 5, replicas = 1, refreshInterval = "-1", indexStoreType = "memory")
class AA {

     @Id
     private Long Id;

     private BB bb;
     private String field1;

     // ... Many more Fields.

     // ... getters and setters
}

@Document(indexName = "bb", type = "bb", shards = 5, replicas = 1, refreshInterval = "-1", indexStoreType = "memory")
class BB {

     @Id
     private Long Id;

     private BB bbParent;

     // ... Many more Fields.

     // ... getters and setters
}

当我保存到AA存储库

时

aaRepository.save(aa);

我有一些奇怪的行为：当bbParent为null时，一切都很好，但是当设置bbParent时，保存需要更长时间（> 100倍）。

你有任何提示吗？