title: Upgrade EMR 5.19 to 5.20
body: <p>As part of EMR Cluster version upgrade to 5.20.0 . All the frameworks in the cluster Big Data Frameworks and AWS Services versions got upgraded to latest versions.</p>
  
  <p>For example :</p>
  
  <p>Spark 2.3.2 to Spark 2.4.0</p>
  
  <p>Presto 0.212 to 0.214</p>
  
  <p>While testing the stability and version compatibility with the application we got 1 major issue.</p>
  
  <p>i.e., aws cli is not working because of aws config file in the cluster is getting created with region name as null.</p>
  
  <p>Error in the config file:</p>
  
  <p>s3 = signature_version = s3v4</p>
  
  <p>region = null</p>
  
  <p>Given i am a Developer or Tester when i create a new EMR Cluster with Jenkins pipeline the error above should be resolved and aws cli should work without any failure.</p>