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From "Sumit Mohanty (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (AMBARI-13134) Stack advisor's recommendation should support both homogeneous and heterogenous nodes
Date Sat, 03 Oct 2015 20:07:26 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-13134?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Sumit Mohanty updated AMBARI-13134:
-----------------------------------
    Assignee:     (was: Srimanth Gunturi)

> Stack advisor's recommendation should support both homogeneous and heterogenous nodes
> -------------------------------------------------------------------------------------
>
>                 Key: AMBARI-13134
>                 URL: https://issues.apache.org/jira/browse/AMBARI-13134
>             Project: Ambari
>          Issue Type: Improvement
>          Components: ambari-server, blueprints
>    Affects Versions: trunk
>            Reporter: Vijay Srinivasaraghavan
>
> Stack advisor provides service component placement recommendations for any given set
oif hosts and services with the assumption that all the hosts are  homogeneous (same configuration
- cpu/memory). This limits the possibility of assigning hosts that are capable of being master
to associate master service components. 
> By passing the host-group information with some hints specifying which distinction between
master and slave nodes, the stack advisor component could place the appropriate master service
components with the associated master hosts.
> Stack advisor could parse the host group name ("masters" vs "slaves" vs "clients") and
identifies if the hosts could be treated as master or slave. In the absence of the "hint",
all the hosts will be assumed to be homogeneous (default/current implementation)   
> "name":"masters-host-group1"
> "name":"slaves-host-group1"
> "name":"clients-host-group1"
> /api/v1/stacks/HDP/versions/2.3/recommendations
> {
>    "hosts":[
>       "host1",
>       "host2"
>    ],
>    "services":[
>       "HDFS",
>       "YARN",
>       "MAPREDUCE2",
>       "ZOOKEEPER"
>    ],
>    "recommendations":{
>       "blueprint":{
>          "host_groups":[
>             {
>                "name":"masters-host-group1",
>                "components":[
>                ]
>             },
>             {
>                "name":"slaves-host-group1",
>                "components":[
>                ]
>             },
>             {
>                "name":"clients-host-group1",
>                "components":[
>                ]
>             }
>          ]
>       },
>       "blueprint_cluster_binding":{
>          "host_groups":[
>             {
>                "name":"masters-host-group1",
>                "hosts":[
>                   {
>                      "fqdn":"host1"
>                   }
>                ]
>             },
>             {
>                "name":"slaves-host-group1",
>                "hosts":[
>                   {
>                      "fqdn":"host2"
>                   }
>                ]
>             },
>             {
>                "name":"clients-host-group1",
>                "hosts":[
>                   {
>                      "fqdn":"host3"
>                   }
>                ]
>             }
>          ]
>       }
>    },
>    "recommend":"host_groups"
> }



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