Thanks the issue resolved after following the above steps. After re-adding the node, which was decommissioned earlier, it was crashing to start. YARN>Summary>NodeManagers Status was also showing 1 node with decommissioned status but will the cleanup not happen during the install process? , Thanks, Issue resolved after completing the below steps. The newly added host/nodemanager was crashing and the YARN>Summary>NodeManagers Status was showing 1 node in decommissioned status Check /etc/hadoop/conf/yarn.exclude . If this host exists in this file remove it Execute yarn rmadmin -refreshNodes so YARN re-reads this configuration file when you re-add the host again, should not the file get updated automatically? ... View more