java—是什么导致了spring boot故障安全清理(集合)的发生

lmvvr0a8  于 2021-06-17  发布在  Mysql
关注(0)|答案(5)|浏览(441)

我有一个javaspring启动应用程序，其中包含与以下异常相关的以下实体
S产品

@Entity
@Table(
        name = "product",
        indexes = @Index(
                name = "idx_asin",
                columnList = "asin",
                unique = true
        )
)
public class SProduct implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;
    @Column(name = "asin", unique = false, nullable = false, length = 10)
    private String asin;
    @Column(name = "rootcategory")
    private Long rootcategory;
    @Column(name = "imageCSV", unique = false, nullable = true, length = 350)
    private String imagesCSV;
    @Column(name = "title", unique = false, nullable = true, length = 350)
    private String title;
    private Date created;
    @OneToMany(fetch = FetchType.EAGER, mappedBy = "mainProduct", cascade = CascadeType.ALL)
    private Set<FBT> fbts;
    @OneToOne(fetch = FetchType.EAGER, mappedBy = "downloadProductId", cascade = CascadeType.ALL)
    private Download download;

fbt公司

@Entity
@Table(
    name = "fbt",
    uniqueConstraints={@UniqueConstraint(columnNames = {"main_product_id" , "collection"})},
    indexes = {@Index(
        name = "idx_main_product_id",
        columnList = "main_product_id",
        unique = false),
        @Index(
        name = "idx_product_fbt1id",
        columnList = "product_fbt1_id",
        unique = false),
        @Index(
        name = "idx_product_fbt2id",
        columnList = "product_fbt2_id",
        unique = false)
        }
)
public class FBT implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private long id;
    @ManyToOne
    @JoinColumn(name = "main_product_id")
    private SProduct mainProduct;
    @ManyToOne
    @JoinColumn(name = "product_fbt1_id")
    private SProduct sproductFbt1;
    @ManyToOne

    @JoinColumn(name = "product_fbt2_id")
    private SProduct sproductFbt2;
    @Column(name = "bsr", nullable = false)
    private int bsr;
    private Date collection;

我的fbt存储库中有以下查询

FBT findByMainProductAndCollection(SProduct mainProduct,Date collection);

当mainproduct和collection的数据库中存在数据时，导致以下消息输出异常，否则返回null。

<message>HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@69b7fcfc&lt;rs=HikariProxyResultSet@325408381 wrapping com.mysql.jdbc.JDBC42ResultSet@108693fa&gt;</message>
  <message>HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries</message>
  <message>HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@47c40535&lt;rs=HikariProxyResultSet@2005129089 wrapping com.mysql.jdbc.JDBC42ResultSet@9894f70&gt;</message>
  <message>HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries</message>
  <message>HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@5b0cd175&lt;rs=HikariProxyResultSet@1598144514 wrapping com.mysql.jdbc.JDBC42ResultSet@6a7ff475&gt;</message>
  <message>HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries</message>
  <message>HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@f67e2cc&lt;rs=HikariProxyResultSet@319200129 wrapping com.mysql.jdbc.JDBC42ResultSet@215b8a6&gt;</message>
  <message>HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries</message>
  <message>HHH000100: Fail-safe cleanup (collections) : org.hibernate.engine.loading.internal.CollectionLoadContext@5961afc0&lt;rs=HikariProxyResultSet@1772496904 wrapping com.mysql.jdbc.JDBC42ResultSet@5956a59b&gt;</message>
  <message>HHH000160: On CollectionLoadContext#cleanup, localLoadingCollectionKeys contained [1] entries</message>
  <message>HHH000100: Fail-safe cleanup (collections) :

我决定放弃上面的内容，写一个@query来计算，因为我只需要确定数据是否存在，这就避免了这个问题，这让我觉得应该把所有代码都改成@query。

@Query("select count(*) as count from FBT where main_product_id = :id and collection= :collection")
    int countByMainProductIdAndCollection(@Param("id") long id, @Param("collection") Date collection);

不过，当一个产品已经存在于数据库中时，在更新到该产品的数据库时，这种情况似乎也是随机发生的。

SProductRepo.saveAndFlush(s);

我说是随机的，因为运行相同代码的11个应用程序以随机的间隔与上述消息一起退出。代码没有生成任何异常，10000次成功的数据库更新都是使用导致失败的相同代码进行的。当试图更新以前工作过的数据库时，代码停止。

""2018-12-28 00:56:06 [KeepaAPI-RetryScheduler] WARN  org.hibernate.engine.loading.internal.LoadContexts - HHH000100: Fail-safe cleanup (collections) : org.hibernate.eng
ine.loading.internal.CollectionLoadContext@5c414639<rs=HikariProxyResultSet@1241510017 wrapping Result set representing update count of 13>
""2018-12-28 00:56:06 [KeepaAPI-RetryScheduler] WARN  org.hibernate.engine.loading.internal.CollectionLoadContext - HHH000160: On CollectionLoadContext#cleanup, localLoa
dingCollectionKeys contained [1] entries
""2018-12-28 00:56:06 [KeepaAPI-RetryScheduler] WARN  org.hibernate.engine.loading.internal.LoadContexts - HHH000100: Fail-safe cleanup (collections) : org.hibernate.eng
ine.loading.internal.CollectionLoadContext@5595c065<rs=HikariProxyResultSet@2140082434 wrapping Result set representing update count of 14>
""2018-12-28 00:56:06 [KeepaAPI-RetryScheduler] WARN  org.hibernate.engine.loading.internal.CollectionLoadContext - HHH000160: On CollectionLoadContext#cleanup, localLoa
dingCollectionKeys contained [1] entries
""2018-12-28 00:56:06 [KeepaAPI-RetryScheduler] WARN  org.hibernate.engine.loading.internal.LoadContexts - HHH000100: Fail-safe cleanup (collections) : org.hibernate.eng
ine.loading.internal.CollectionLoadContext@2956fe24<rs=HikariProxyResultSe

此外，sproductfindbyasin（stringasin）查询也会导致相同的问题，但是数据库中的查询工作得非常好，这在spring引导中也可以使用。

mysql> select * from product where asin="B004FXJOQO";
| id | asin       | created    | imagecsv                                                                        | rootcategory | title                                                                                                        |  9 | B004FXJOQO | 2018-08-04 | 41T0ZwTvSSL.jpg,61V90AZKbGL.jpg,51AdEGCTZqL.jpg,51LDnCYfR0L.jpg,71bbIw43PjL.jpg |       228013 | Dual Voltage Tester, Non Contact Tester for High and Low Voltage with 3-m Drop Protection Klein Tools NCVT-2 |
1 row in set (0.00 sec)

我想知道的是，产生这种消息的一般原因是什么？
尽管插入语句是代码中最后执行的语句，但它们为什么会停止我的应用程序？
是否有日志调试设置可用于确定生成消息的确切原因？
有没有办法关闭或控制此功能？
聚甲醛

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <maven-dependency-plugin.version>2.10</maven-dependency-plugin.version>
        <maven.test.skip>true</maven.test.skip>
    </properties>
    <repositories>
        <repository>
            <id>Keepa</id>
            <name>Keepa Repository</name>
            <url>https://keepa.com/maven/</url>
        </repository>
    </repositories>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-logging</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency> 
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-integration</artifactId>
        </dependency>

        <dependency>
            <groupId>javax.mail</groupId>
            <artifactId>mail</artifactId>
            <version>1.4.7</version>
        </dependency>
        <dependency>
            <groupId>commons-io</groupId>
            <artifactId>commons-io</artifactId>
            <version>2.6</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-compress</artifactId>
            <version>1.18</version>
        </dependency>
        <dependency>
            <groupId>com.google.api-client</groupId>
            <artifactId>google-api-client</artifactId>
            <version>1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client-jetty</artifactId>
            <version>1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-oauth2</artifactId>
            <version>v1-rev120-1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client-java6</artifactId>
            <version>1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.oauth-client</groupId>
            <artifactId>google-oauth-client</artifactId>
            <version>1.22.0</version>
        </dependency>
        <dependency>
            <groupId>com.google.apis</groupId>
            <artifactId>google-api-services-gmail</artifactId>
            <version>v1-rev48-1.22.0</version>
        </dependency>
        <dependency>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>exec-maven-plugin</artifactId>
            <version>1.5.0</version>
            <exclusions>
                <exclusion>
                    <groupId>org.slf4j</groupId>
                    <artifactId>slf4j-nop</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <dependency>
            <groupId>com.jcraft</groupId>
            <artifactId>jsch</artifactId>
            <version>0.1.54</version>
        </dependency>
        <dependency>
            <groupId>com.myjeeva.digitalocean</groupId>
            <artifactId>digitalocean-api-client</artifactId>
            <version>2.16</version>
        </dependency>
        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
        </dependency>
        <dependency>
            <groupId>com.keepa.api</groupId>
            <artifactId>backend</artifactId>
            <version>LATEST</version>
        </dependency>
        <dependency>
            <groupId>org.jdeferred</groupId>
            <artifactId>jdeferred-core</artifactId>
            <version>1.2.6</version>
        </dependency>
        <dependency>
            <groupId>com.google.guava</groupId>
            <artifactId>guava</artifactId>
            <version>22.0</version>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build

我将内存从1gb增加到2gb，但是内存只有可用内存的30%。
你有什么想法吗？
敬亚历克斯

Javamysqlspring-bootHibernate

5条答案

按热度按时间
zbq4xfa0

zbq4xfa01#

首先，这是一个hibernate错误，由 org.hibernate.engine 和Spring Boot无关。
如果您正在获取大量数据，例如使用hql查询获取成千上万个实体，则可能会发生这种情况。
如果您Map了一个一对多关联，其中包含许多子实体，并且由于双向Map，结果集正在无限地复制，则也可能是这种情况。
有关高性能jpa的提示，请参阅下面的链接。
https://vladmihalcea.com/14-high-performance-java-persistence-tips/

赞(0）分享  回复(0）举报  2021-06-18
qcbq4gxm

qcbq4gxm2#

你能试一下吗 @Fetch(value = SELECT) ?

@OneToMany(fetch = FetchType.EAGER, mappedBy = "mainProduct", cascade = CascadeType.ALL)
@Fetch(value=FetchMode.SELECT)
private Set<FBT> fbts;
赞(0）分享  回复(0）举报  2021-06-18
ff29svar

ff29svar3#

似乎您正在应用程序中加载大量数据。
方法

FBT findByMainProductAndCollection(SProduct mainProduct,Date collection);

将加载所有匹配的数据。但是您只需要count就可以尝试准确返回count个数据而不是所有数据的查询。
一种方法是使用您提到的查询，另一种方法是

Long countByMainProductAndCollection(SProduct mainProduct, Date collection);

或者

Boolean existsByMainProductAndCollection(SProduct mainProduct, Date collection)
赞(0）分享  回复(0）举报  2021-06-18
lnvxswe2

lnvxswe24#

我在使用set时遇到了这个问题，但当我更改为list时，您应该使用

private List<FBT> fbts;
赞(0）分享  回复(0）举报  2021-06-18
kxe2p93d

kxe2p93d5#

在我的例子中，这是因为实体递归地调用对方的hashcode，如果您使用lombock，请删除它并自己生成。将调试器的断点放在两个hashcode的方法上。你会发现他们在互相打电话。例如，从第一个实体的hashcode方法中删除第二个实体的链接。

赞(0）分享  回复(0）举报  2021-06-18
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