检测到线程饥饿或时钟跳跃（管家 delta=*）：Spring Batch

Question

我已经面临这个问题有一段时间了。让我尝试解释一下问题到底是什么。 当我使用 Drools 运行带有大量文件的 Spring 批处理应用程序时，经过 30-40 分钟的处理后，我面临以下问题。我拥有的数据库是

oracle11g

。请找到下面的日志：

2022-03-23 18:24:39.242 ERROR 21708 --- [           main] o.s.batch.core.step.AbstractStep         : Encountered an error executing step readProvisions in job processProvisions

java.lang.OutOfMemoryError: GC overhead limit exceeded
at java.util.Hashtable.addEntry(Hashtable.java:435) ~[na:1.8.0_92]
at java.util.Hashtable.put(Hashtable.java:476) ~[na:1.8.0_92]
at java.util.Properties.setProperty(Properties.java:166) ~[na:1.8.0_92]
at org.springframework.batch.item.file.transform.DefaultFieldSet.getProperties(DefaultFieldSet.java:748) ~[spring-batch-infrastructure-4.3.1.jar:4.3.1]

当我添加以下参数时

-XX:+HeapDumpOnOutOfMemoryError

在运行配置中获取内存转储时出现以下错误：

2022-03-22 00:26:15.640 DEBUG 25460 --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Add connection elided, waiting 0, queue 1
2022-03-22 00:27:15.997 DEBUG 25460 --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Add connection elided, waiting 0, queue 3
2022-03-22 00:27:46.013 DEBUG 25460 --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Add connection elided, waiting 0, queue 4
2022-03-22 00:28:15.993 DEBUG 25460 --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Add connection elided, waiting 0, queue 5
2022-03-22 00:36:35.396 DEBUG 25460 --- [HikariPool-1 housekeeper] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Fill pool skipped, pool is at sufficient level.
2022-03-22 00:36:35.396 DEBUG 25460 --- [HikariPool-1 connection adder] com.zaxxer.hikari.pool.HikariPool        : HikariPool-1 - Cannot acquire connection from data source

java.sql.SQLRecoverableException: IO Error: Connection reset by peer: socket write error
at oracle.jdbc.driver.T4CConnection.logon(T4CConnection.java:682) ~[ojdbc7-12.1.0.1.0.jar:12.1.0.1.0]
at oracle.jdbc.driver.PhysicalConnection.<init>(PhysicalConnection.java:715) ~[ojdbc7-12.1.0.1.0.jar:12.1.0.1.0]
at oracle.jdbc.driver.T4CConnection.<init>(T4CConnection.java:385) ~[ojdbc7-12.1.0.1.0.jar:12.1.0.1.0]
at oracle.jdbc.driver.T4CDriverExtension.getConnection(T4CDriverExtension.java:30) ~[ojdbc7-12.1.0.1.0.jar:12.1.0.1.0]

现在，当我评论 Drools 功能时，我能够在单次运行中快速处理 70 个文件，并且没有任何错误。我在 POM.xml 中看到以下 drools 依赖项：

<!-- https://mvnrepository.com/artifact/org.drools/drools-core -->
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-core</artifactId>
        <version>6.4.0.Final</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.drools/drools-compiler -->
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-compiler</artifactId>
        <version>6.4.0.Final</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.drools/drools-spring -->
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-spring</artifactId>
        <version>5.6.0.Final</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.drools/drools-decisiontables -->
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-decisiontables</artifactId>
        <version>6.4.0.Final</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.drools/drools-templates -->
    <dependency>
        <groupId>org.drools</groupId>
        <artifactId>drools-templates</artifactId>
        <version>6.4.0.Final</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.kie/kie-api -->
    <dependency>
        <groupId>org.kie</groupId>
        <artifactId>kie-api</artifactId>
        <version>6.4.0.Final</version>
        <scope>provided</scope>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.kie/kie-internal -->
    <dependency>
        <groupId>org.kie</groupId>
        <artifactId>kie-internal</artifactId>
        <version>6.4.0.Final</version>
    </dependency>

这是配置代码：

@Bean
public KieSession getKieSession() {

    KieFileSystem kieFileSystem = kieServices.newKieFileSystem();

    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/RE21DataConformRules.xls"));
    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/RE21DataSystemRules.xls"));
    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/CoveragesMappingRules.xls"));
    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/AS400ARiskIDMappingForCDBRules.xls"));
    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/HSBCoveragesTableforRE21.xls"));
    kieFileSystem.write(ResourceFactory.newClassPathResource("rules/UmbrellaILFRules.xls"));

    KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem);
    kieBuilder.buildAll();
    KieModule kieModule = kieBuilder.getKieModule();

    KieContainer kContainer = kieServices.newKieContainer(kieModule.getReleaseId());

    return kContainer.newKieSession();
}

任何人都可以帮助解决此问题吗？

提前致谢。