title: get the scan input records size from spark UI
body: <p>I'm trying to parse some data from spark UI by using rest api from this [doc][1]. the main thing that I'm try to get is 'scan input records size' but there are other thing as 'shuffle read size'. for doing that i check the syntax that written in this doc <code>http://localhost:4040/api/v1/applications/[app-id]/sql</code> but Im getting this msg:</p>
  <blockquote>
  <p>unknown app local-1619521159740, attempt sql</p>
  </blockquote>
  <p>for compering if I type <code>http://localhost:4040/api/v1/applications/[app-id]/stages</code>
  I'm getting the right result. dues anyone can help?
  [1]: <a href="https://spark.apache.org/docs/latest/monitoring.html" rel="nofollow noreferrer">https://spark.apache.org/docs/latest/monitoring.html</a></p>