https://community.cloudera.com/t5/Support-Questions/Adding-nodes-will-improve-performance/m-p/51287#M5483 <P><a href="https://community.cloudera.com/t5/user/viewprofilepage/user-id/20206">@MasterOfPuppets</a></P><P>&nbsp;</P><P>Very Hypothetical "one line" question.</P><P>&nbsp;</P><P>I don't think just adding few extra nodes will double the performance...Few of the additional parameters that you need to consider as</P><P>&nbsp;</P><P>1. The way services are configured in the cluster is also very important. Ex: You have 3 nodes now, Consider 10 services are configured in 3 nodes. After 3 more nodes are added, you need to properly distribute the services to the new nodes as well</P><P><BR />On Existing Cluster - without adding new nodes:<BR />1. If possible, Add RAM to existing nodes<BR />2. Identify which particular services required&nbsp;better performance like hive, impala, etc. You can tune the environment configuration for those services. Ex: Increase Java heap size, etc<BR />3. Prioritize the jobs<BR />etc</P> Tue, 21 Feb 2017 22:16:03 GMT saranvisa 2017-02-21T22:16:03Z