Question

在我的Spring Batch应用程序中，我使用PostgreSQL作为作业存储库，并使用以下登录名来重新启动未完成的作业：

try {
    jobRegistry.register(new ReferenceJobFactory(documetPipelineJob));

    List<String> jobs = jobExplorer.getJobNames();
    for (String job : jobs) {

    Set<JobExecution> jobExecutions = jobExplorer.findRunningJobExecutions(job);

    for (JobExecution jobExecution : jobExecutions) {

        jobExecution.setStatus(BatchStatus.STOPPED);
        jobExecution.setEndTime(new Date());
        jobRepository.update(jobExecution);

        Long jobExecutionId = jobExecution.getId();
        jobOperator.restart(jobExecutionId);
    }
    }
} catch (Exception e) {
    LOGGER.error(e.getMessage(), e);
}

但是此逻辑失败，但有以下异常：

2018-08-01 14：33：21.777错误32306 --- [main] c.v.p.d.service.batch.BatchServiceImpl：非法状态（仅发生在竞争条件下）：作业执行已与名称= documetPipelineJob和参数=

这里可能有什么问题以及如何解决？

已更新

看起来jobRepository.update(jobExecution);不会将更改提交到数据库。如何正确地将更改提交到数据库？顺便说一句-这种逻辑在H2内存数据库中正常工作。

Answer 1

为了解决此问题，我添加了incrementer(new RunIdIncrementer())：

jobBuilderFactory.get("documetPipelineJob")
        .incrementer(new RunIdIncrementer())
        .start(initStep)

我还扩展了重启逻辑以停止运行步骤：

try {
    jobRegistry.register(new ReferenceJobFactory(documetPipelineJob));

    List<String> jobs = jobExplorer.getJobNames();
    for (String job : jobs) {

    Set<JobExecution> jobExecutions = jobExplorer.findRunningJobExecutions(job);

    for (JobExecution jobExecution : jobExecutions) {

        Collection<StepExecution> stepExecutions = jobExecution.getStepExecutions();
        for (StepExecution stepExecution : stepExecutions) {
        BatchStatus status = stepExecution.getStatus();
        if (status.isRunning() || status == BatchStatus.STOPPING) {
            stepExecution.setStatus(BatchStatus.STOPPED);
            stepExecution.setEndTime(new Date());
            jobRepository.update(stepExecution);
        }
        }

        jobExecution.setStatus(BatchStatus.STOPPED);
        jobExecution.setEndTime(new Date());
        jobRepository.update(jobExecution);

        Long jobExecutionId = jobExecution.getId();

        jobOperator.restart(jobExecutionId);
    }
    }
} catch (Exception e) {
    LOGGER.error(e.getMessage(), e);
}

然后，我遇到了以下文章中描述的问题：Serialize Transaction Issue我同时运行多个批处理作业。

我通过用JobRepository配置ISOLATION_READ_UNCOMMITTED来解决它：

@Override
protected JobRepository createJobRepository() throws Exception {
    JobRepositoryFactoryBean factory = new JobRepositoryFactoryBean();
    factory.setDataSource(dataSource);
    factory.setTransactionManager(transactionManager);
    factory.setIsolationLevelForCreate("ISOLATION_READ_UNCOMMITTED");
    factory.afterPropertiesSet();
    return factory.getObject();
}

Spring Batch非法状态（仅在竞争条件下发生）：作业执行已在运行

1 个答案: