Spring batch Spring批处理作业抛出类似'；分区处理程序返回了一个不成功的步骤'；

我们有一个spring批处理作业，它在多线程作业中处理1亿条记录，并使用类似分区的扩展过程。在这里，主步骤创建500个分区，这些分区由100个线程处理。但有时，这项工作失败了，只有以下例外。如果我在没有任何代码更改的情况下重新运行作业，它就会正常工作。有人能解释一下，是什么原因导致在不同线程中运行的从属步骤出现问题，从而导致主步骤失败并进一步停止处理

2015-09-11 17:22:21,365 ERROR [task-scheduler-9] org.springframework.batch.core.step.AbstractStep - Encountered an error executing step productImport.master in job productImportJob
org.springframework.batch.core.JobExecutionException: Partition handler returned an unsuccessful step
        at org.springframework.batch.core.partition.support.PartitionStep.doExecute(PartitionStep.java:112) ~[spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.step.AbstractStep.execute(AbstractStep.java:198) ~[spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.SimpleStepHandler.handleStep(SimpleStepHandler.java:148) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.flow.JobFlowExecutor.executeStep(JobFlowExecutor.java:64) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.flow.support.state.StepState.handle(StepState.java:67) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.flow.support.SimpleFlow.resume(SimpleFlow.java:165) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.flow.support.SimpleFlow.start(SimpleFlow.java:144) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.flow.FlowJob.doExecute(FlowJob.java:134) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.job.AbstractJob.execute(AbstractJob.java:304) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.core.launch.support.SimpleJobLauncher$1.run(SimpleJobLauncher.java:135) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.1.2.RELEASE.jar:4.1.2.RELEASE]
        at org.springframework.batch.core.launch.support.SimpleJobLauncher.run(SimpleJobLauncher.java:128) [spring-batch-core-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.integration.launch.JobLaunchingMessageHandler.launch(JobLaunchingMessageHandler.java:50) [spring-batch-integration-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.batch.integration.launch.JobLaunchingGateway.handleRequestMessage(JobLaunchingGateway.java:76) [spring-batch-integration-3.0.3.RELEASE.jar:3.0.3.RELEASE]
        at org.springframework.integration.handler.AbstractReplyProducingMessageHandler.handleMessageInternal(AbstractReplyProducingMessageHandler.java:99) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.handler.AbstractMessageHandler.handleMessage(AbstractMessageHandler.java:78) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.PollingConsumer.handleMessage(PollingConsumer.java:74) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint.doPoll(AbstractPollingEndpoint.java:219) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint.access$000(AbstractPollingEndpoint.java:55) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:149) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$1.call(AbstractPollingEndpoint.java:146) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller$1.run(AbstractPollingEndpoint.java:298) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.util.ErrorHandlingTaskExecutor$1.run(ErrorHandlingTaskExecutor.java:52) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.core.task.SyncTaskExecutor.execute(SyncTaskExecutor.java:50) [spring-core-4.1.2.RELEASE.jar:4.1.2.RELEASE]
        at org.springframework.integration.util.ErrorHandlingTaskExecutor.execute(ErrorHandlingTaskExecutor.java:49) [spring-integration-core-4.1.2.RELEASE.jar:na]
        at org.springframework.integration.endpoint.AbstractPollingEndpoint$Poller.run(AbstractPollingEndpoint.java:292) [spring-integration-core-4.1.2.RELEASE.jar:na]

首先调整“maxPoolSize”属性，如果仍然面临此问题，请根据作业负载调整

ThreadPoolTaskExecutor

的这些其他属性（假设使用相同的属性）

<property name="corePoolSize" value="20">
<property name="queueCapacity" value="20">
<property name="maxPoolSize" value="20">
<property name="allowCoreThreadTimeout" value="true">

您缺少异常的原因。为什么从属步骤失败？这是这个问题的答案，绝对正确。“[ThreadPoolTaskExecutor-1]错误o.s.batch.core.step.AbstractStep-在作业中执行步骤时遇到错误”此错误与ThreadPoolTaskExecutor相关。如果它没有足够的线程池大小，那么它会中断处理并抛出错误。非常感谢你的回答，最后我找到了davestated问题的窍门。有人能发布这个问题的解决方案吗