[AMBARI-11266] Blueprint API: Move host_count and host_predicate fields up one level

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1.0
• Fix Version/s: 2.1.0
• Component/s: blueprints
• Assignee: John Speidel
• Reporter: John Speidel
• Created: 20/May/15 13:57
• Updated: 26/May/15 14:17
• Resolved: 20/May/15 20:48

Description

Recently, during 2.1 development, API additions were made that allow a host count and host predicate to be specified for blueprint provision and scaling requests.

The additions are documented in the Apache Jira: https://issues.apache.org/jira/browse/AMBARI-10750

After some consideration and discussion, it has become clear that the host_count and host_predicate fields need to move up one level form their current location under hosts. Only explicitly specified hosts will be contained within "hosts".

For example:

{
  "blueprint" : "bp1",
  "host_groups" :[
    { 
      "name" : "master",  
      "hosts" : [          
        { 
          "fqdn" : "john2.novalocal"
        }
      ]
    },  
    { 
      "name" : "slave",   
      "host_count" : "5",
      "host_predicate" : "Hosts/cpu_count>1"   
    }
  ]
}

Issue Links

• is related to: AMBARI-10750 Initial Implementation of Advanced API Cluster Provisioning Functionality
• links to: ReviewBoard