I little bit new to Hadoop, I wandering is it possible to set up Standby Namenode in HDP Sandbox 2.6.5? The HA Wizard is unavailable
@Kseniya Mazhara, You'd need at-least two hosts registered in ambari to enable namenode HA.One node for active namenode and another one for Standby.
sandbox is a single host vm and you cannot enable NN HA there.
Hope this helps.