@Muhammad Touseef You can use the instructions to stop hadoop services before upgrade. One thing you absolutely want to make sure is no jobs are running. Let any running job complete. The right way to do it would be to stop queues so any running jobs will complete but no new jobs will be submitted. Once all jobs are completed and nothing is running, you can use "stop all" command from Ambari or simply follow the instructions below: https://hadoop.apache.org/docs/r2.7.2/hadoop-yarn/hadoop-yarn-site/CapacityScheduler.html ---> check for how to stop queues https://docs.hortonworks.com/HDPDocuments/Ambari-2.1.2.0/bk_upgrading_Ambari/content/_stop_cluster_and_checkpoint_HDFS_mamiu.html -->stop all. ... View more