问可以在spring batch中组合分区和并行步骤吗？

EN

return jobBuilderFactory.get("dataLoad")
            .incrementer(new RunIdIncrementer())
            .listener(listener)
            .start(step1())
            .next(step2())
            .next(step3())
            .build()
            .build();
@Bean
public Flow step2() {
    Flow subflow1 = new FlowBuilder<Flow>("readTable1Flow").from(readTable1()).end();
    Flow subflow2 = new FlowBuilder<Flow>("readTable2Flow").from(readTable2()).end();
    Flow subflow3 = new FlowBuilder<Flow>("readTable3Flow").from(readTable3()).end();

    return new FlowBuilder<Flow>("splitflow").split(new SimpleAsyncTaskExecutor())
            .add(subflow1, subflow2, subflow3).build();
}
@Bean
public Step readTable1() {
    return stepBuilderFactory.get("readTable1Step")
            .partitioner(slaveStep1().getName(), partitioner1())
            .partitionHandler(slaveStep1Handler())
            .build();
}

@Bean
public Step readTable2() {
    return stepBuilderFactory.get("readTable2Step")
            .partitioner(slaveStep2().getName(), partitioner2())
            .partitionHandler(slaveStep2Handler())
            .build();
}
@Bean
public Step readTable3() {
    return stepBuilderFactory.get("readTable3Step")
            .partitioner(slaveStep3().getName(), partitioner2())
            .partitionHandler(slaveStep3Handler())
            .build();
}