[AMBARI-21482] Blueprints: HSI config 'num_llap_nodes' and 'num_llap_nodes_for_llap_daemons' should be calculated and recommended via Stack Advisor during Blueprint install only if 'num_llap_nodes' config value is not provided in Blueprint.

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: trunk, 2.5.1
• Fix Version/s: trunk, 2.5.2
• Component/s: ambari-server
• Assignee: Swapan Shridhar
• Reporter: Swapan Shridhar
• Created: 15/Jul/17 00:33
• Updated: 17/Jul/17 19:12
• Resolved: 15/Jul/17 08:01

Description

Current: HSI config 'num_llap_nodes_for_llap_daemons' is calculated and recommended via Stack Advisor during Blueprint install and ''num_llap_nodes'' value is not used for 'num_llap_nodes_for_llap_daemons' calculation, if available in Blueprint.

Issue : This creates the problem of calculating value for 'num_llap_nodes_for_llap_daemons', in which calculation doesn't includes using the 'num_llap_nodes' value.

We need to use 'num_llap_nodes' config value (if provided in BP) while calculating value for 'num_llap_nodes_for_llap_daemons' during cluster creation call to Stack Advisor.

Fix : During BP cluster install call to SA, recommendation for 'num_llap_nodes_for_llap_daemons' should use value of 'num_llap_nodes' config if specified in the cluster BP call.