How to change hadoop configuration without down cluster?

[#1]

Here i am tring to add new journal node to hadoop cluster, Is there any way to change conf of cluster without down

[#2]

@karthik nedunchezhiyan

Post adding the journal node, A restart of services like HDFS, YARN and other dependent services is mandatory. As the new journal node entry will not be affected unless we restart the daemons.

[#3]

Tnx for your response @Sandeep Nemuri, Can you please explain the steps to add new journal node to running cluster

[#4]

@karthik nedunchezhiyan

This article should help you : https://community.hortonworks.com/articles/105985/managing-journalnodes-with-ambari-250.html

[#5]

But i am not using ambari, is there any other way to add without ambari