问题描述
在JVM崩溃后如何重新启动Jobs?
How to restart Jobs after a JVM crash?
当我的JVM崩溃或系统出现故障时，我正在运行许多在Spring Batch框架中实现的Jobs.失败后如何重新启动这些作业?
I was running a lot of Jobs implemented in Spring Batch framework, when my JVM crashed or the system failed. How can I restart these Jobs after failure?
推荐答案
基本上，您可以执行以下操作:
Basically, you can do as follows:
-
在您的应用程序上下文中配置
JobExplorer工厂bean:
在应用上下文中配置JobOperator bean
Configure a JobOperator bean in your applictaion context
查询jobExplorer以获取不同的作业名称:jobExplorer.getJobNames()
Query the jobExplorer for distinct job names: jobExplorer.getJobNames()
对于步骤(3)中的每个作业，请查询jobExplorer中未完成的作业:jobExplorer.findRunningJobExecutions(String jobName)
For each job from step (3), query the jobExplorer for unfinished jobs:jobExplorer.findRunningJobExecutions(String jobName)
对于步骤(4)中的每个JobExecution，调用:jobOperator.restart(jobExecution.getJobId())
For each JobExecution from step (4) invoke:jobOperator.restart(jobExecution.getJobId())
在启动任何其他作业之前，请确保在启动顺序中调用此过程
Make sure to call this procedure during boot sequence, before any other job is launched
从技术上讲，可以通过覆盖JobExecutionDao合并findRunningJobExecutions()之类的步骤3 + 4，但是当前的API不支持它.
Technically it is possible to merge steps 3+4 for something like findRunningJobExecutions() by overriding JobExecutionDao, but the current API doesn't support it.
有关上述Spring bean配置的帮助，请参阅参考文档
For help in aforementioned Spring bean configuration, consult the reference documentation
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