Spring Batch 不会以并行模式执行流程。我究竟做错了什么?
<split id="preprocessingStep" next="decompress">
<flow>
<step id="step11" next="step22">
<tasklet ref="my1" />
</step>
<step id="step22">
<tasklet ref="my2" />
</step>
</flow>
<flow>
<step id="step33">
<tasklet ref="my3" />
</step>
</flow>
</split>