@PJ Regarding your question - "I understand what you are saying but how can I change this to contact the active RM first? And how come this worked in 2.4.2 and not in 2.5.3, there should be some parameter changes?? Also, everytime it contacts resource manager, it is wasting some time checking which is active.." You can make "rm1" as active using failover command. Please use below command to failover from rm2 to rm1 as 'yarn' user on any yarn-client yarn rmadmin -failover rm2 rm1 If you have enabled automatic failover and for some reason above command fails then use below command( If you are doing it for production, please be very careful or contact Hortonworks Support ) yarn rmadmin -transitionToActive rm1 --forceactive --forcemanual OR If no jobs are running, then simply restart "rm2" from Ambari, rm1 will automatically become Active if automatic failover is enabled.
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