我已经回顾了Spring-batch flow / split after a step,发现(a)标记的解决方案没有解析因为拆分无法访问,而且(b)我的用例不同,所以答案的意图是不同的 .
我还审查了How to configure mentioned use case using spring batch parallel step split flow?,但解决方法是增加并行化,而不是拆分和连接线程 .
这似乎是一个常见的用例,它应该是一个FAQ,但我还没有看到解决方案 .
我有一个并行化的 spring 批处理作业,我想添加设置和拆卸步骤 . 设置和teatdown是单线程,但主体工作是并行的 .
随着时间的推移,事件的图表不同:
start setup
|
split -------
| |
some other
stuff stuff
| |
join -------
|
finish teardown
我开始的 spring 批处理作业XML是:
<batch:job id="myJob">
<batch:step id="step0001-setup">
<batch:tasklet transaction-manager="jtaTransactionManager"
start-limit="100" allow-start-if-complete="true">
<batch:chunk reader="beforeJobScriptExecutor" writer="dummySinkWriter"
commit-interval="1" />
</batch:tasklet>
</batch:step>
<batch:split id="split1" task-executor="taskExecutor" next="step9999">
<batch:flow>
<batch:step id="step0003-one-thread"
allow-start-if-complete="true">
<batch:tasklet transaction-manager="jtaTransactionManager"
start-limit="100">
<batch:chunk reader="myReader1" writer="myWriter1"
commit-interval="1" />
</batch:tasklet>
</batch:step>
</batch:flow>
<batch:flow>
<batch:step id="step0002-another-thread">
<batch:tasklet transaction-manager="jtaTransactionManager"
start-limit="100">
<batch:chunk reader="myReader2" writer="myWriter2"
commit-interval="1" />
</batch:tasklet>
</batch:step>
</batch:flow>
</batch:split>
<batch:step id="step9999">
<batch:tasklet transaction-manager="jtaTransactionManager"
start-limit="100" allow-start-if-complete="true">
<batch:chunk reader="afterJobScriptExecutor" writer="dummySinkWriter"
commit-interval="1" />
</batch:tasklet>
</batch:step>
</batch:job>
1 回答
解决方案主要在这篇文章中概述:How to terminate Step within a Spring Batch Split Flow with a Decider
spring 批作业的最终文本是这样的: