title: Process parallel multiple read in spring Integration
body: <p>I have one file which contains some record and i have second file which also contains same record but with more details , so i want to process in a way that read one record from first file and search in second. 
  How to read two files in parallel ?</p>
  
  <p>Update :</p>
  
  <pre><code>return IntegrationFlows.from(readFilefromDirectory(), fileInboundPollingConsumer())
                      .split(fileSplitter())
                  .channel(c -&gt;c.executor(id, executor))
  </code></pre>
  
  <p>here in first line we are reading first file and then splitting it sending to executer channel so i want to know where should i write logic to read second file means to read from directory and then search record in that excel file .</p>