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https://issues.apache.org/jira/browse/AMBARI-6624?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Antonenko Alexander updated AMBARI-6624:
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Attachment: AMBARI-66624.patch
> Make validation for minimum required number of service components from
> cardinality field of stacks API
> ------------------------------------------------------------------------------------------------------
>
> Key: AMBARI-6624
> URL: https://issues.apache.org/jira/browse/AMBARI-6624
> Project: Ambari
> Issue Type: Task
> Components: client
> Affects Versions: 1.7.0
> Reporter: Antonenko Alexander
> Assignee: Antonenko Alexander
> Fix For: 1.7.0
>
> Attachments: AMBARI-66624.patch
>
>
> web-ui imposes validation for minimum limit of host components required to be
> installed for a service. Right now it is *1* for all *master components*
> *except* ZK server and HBase Master. So on "Assign Master" page UI doesn't
> show "+" sign next to any service component except ZK server and HBase master.
> For now for Slave components, the minimum limit is *1* and maximum limit is
> "ALL". So If user does not select any host, web-ui throws validation error
> asking user to atleast select one host.
> As a resolution to this ticket, this validation logic needs to be fetched
> from the server. Stacks API has cardinality field
> {code}
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/stackServices/HDFS/components?fields=StackServiceComponents/cardinality";,
> "items" : [
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/DATANODE";,
> "StackServiceComponents" : {
> "cardinality" : "1+",
> "component_name" : "DATANODE",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> },
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/HDFS_CLIENT";,
> "StackServiceComponents" : {
> "cardinality" : "0+",
> "component_name" : "HDFS_CLIENT",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> },
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/JOURNALNODE";,
> "StackServiceComponents" : {
> "cardinality" : "0+",
> "component_name" : "JOURNALNODE",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> },
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/NAMENODE";,
> "StackServiceComponents" : {
> "cardinality" : "1",
> "component_name" : "NAMENODE",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> },
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/SECONDARY_NAMENODE";,
> "StackServiceComponents" : {
> "cardinality" : "1",
> "component_name" : "SECONDARY_NAMENODE",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> },
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/HDFS/components/ZKFC";,
> "StackServiceComponents" : {
> "cardinality" : "0+",
> "component_name" : "ZKFC",
> "service_name" : "HDFS",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> }
> ]
> }
> {code}
> cardinality can also have value "ALL" which means service component should be
> installed on all hosts of the cluster
> {code}
> {
> "href" :
> "http://c6401.ambari.apache.org:8080/api/v1/stacks/HDP/versions/2.1/services/GANGLIA/components/GANGLIA_MONITOR?fields=StackServiceComponents/cardinality";,
> "StackServiceComponents" : {
> "cardinality" : "ALL",
> "component_name" : "GANGLIA_MONITOR",
> "service_name" : "GANGLIA",
> "stack_name" : "HDP",
> "stack_version" : "2.1"
> }
> }
> {code}
> We should not require hard-coded map in App.StackServiceComponent.cardinality
> function once this ticket is resolved
>
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