我们有一个spring引导应用程序，其中使用spring数据ElasticSearch。我们使用实体类来生成弹性索引。下面显示了一个这样的类-

import javax.persistence.Id;

import org.springframework.data.elasticsearch.annotations.Document;
import org.springframework.data.elasticsearch.annotations.Field;
import org.springframework.data.elasticsearch.annotations.FieldType;

/**
 * The Class ElasticSearchSampleEntity.
 */
@Document(indexName = "Sample-index", type = "Sample-content")
public class ElasticSearchSampleEntity {

    /**The es Sample entity id. */
    @Id
    @Field(type = FieldType.Long, index = true, name = "id")
    private Long esSampleEntityId;

    /**The es no of questions. */
    @Field(type = FieldType.Integer, index = true)
    private Integer esNoOfQuestions;

    /**The es total marks. */
    @Field(type = FieldType.Integer, index = true)
    private Integer esTotalMarks;

    /**The es total time min. */
    @Field(type = FieldType.Short, index = true)
    private Short esTotalTimeMin;

    /**The es total time sec. */
    @Field(type = FieldType.Short, index = true)
    private Short esTotalTimeSec;

    /**The es occurances. */
    @Field(type = FieldType.Integer, index = true)
    private Integer esOccurances;

    /**The es rating. */
    @Field(type = FieldType.Float, index = true)
    private Float esRating;

    /**The es created on. */
    @Field(type = FieldType.Long, index = true)
    private Long esCreatedDate;

    /**The es updated on. */
    @Field(type = FieldType.Long, index = true)
    private Long esUpdatedDate;

    /**The es published date. */
    @Field(type = FieldType.Long, index = true)
    private Long publishedDate;

    /**The sample type id. */
    @Field(type = FieldType.Integer, index = true)
    private Integer sampleTypeId;

    //getter and setter

}

这应该创建一次索引并将数据存储到弹性服务器。但是，在部署过程中，我们有时会遇到以下错误（间歇性问题）。

[main] ERROR o.s.boot.SpringApplication.reportFailure - Application run failed
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'sampleController': Unsatisfied dependency expressed through field 'esSampleService'; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'elasticSearchSampleServiceImpl': Unsatisfied dependency expressed through field 'esSampleRepo'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'elasticSearchSampleRepository': Invocation of init method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.data.elasticsearch.repository.support.SimpleElasticsearchRepository]: Constructor threw exception; nested exception is java.lang.IllegalArgumentException: mapper [sampleTypeId] cannot be changed from type [long] to [integer]

sampletypeid有时会被创建（或更新）很长时间，尽管我们特别提到它是integer。这就是问题的根源。我已经检查了数据类型，同时保存到弹性数据库以及这看起来不错。这是否意味着弹性索引会随着每次部署而更新。对于我们所做的数据库 spring.jpa.hibernate.ddl-auto=validate 同样地，对于弹性，我们能做同样的事情吗？我不明白为什么会发生这个问题。Map似乎很好。请帮帮我。