title: How to use airflow for real time data processing
body: <p>I have a scenario where i want to process csv file and load to someother database:</p>
  
  <p><strong>Cases</strong></p>
  
  <ol>
  <li>pic csv file and load to mysql with the same name as csv</li>
  <li>then do some modification on loaded rows using python task file</li>
  <li>after that extract data from mysql and load to some other database</li>
  </ol>
  
  <p>CSV files are coming from remote server to one airflow server in a folder.</p>
  
  <p>We have to pick these csv file and process through python script. </p>
  
  <p>Suppose i pick one csv file then i need to pass this csv file to rest of the operator in a dependency manner like</p>
  
  <pre><code>filename : abc.csv
  
  task1 &gt;&gt; task2 &gt;&gt; task3 &gt;&gt;task4
  </code></pre>
  
  <p>So abc.csv should be available for all the task.</p>
  
  <p>Please tell how to proceed.</p>