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From "Andrii Tkach (JIRA)" <j...@apache.org>
Subject [jira] [Created] (AMBARI-7521) Adding a component to a host should check for the presence of host scope dependencies of that component
Date Fri, 26 Sep 2014 15:26:33 GMT
Andrii Tkach created AMBARI-7521:
------------------------------------

             Summary: Adding a component to a host should check for the presence of host scope
dependencies of that component
                 Key: AMBARI-7521
                 URL: https://issues.apache.org/jira/browse/AMBARI-7521
             Project: Ambari
          Issue Type: Task
          Components: ambari-web
    Affects Versions: 1.7.0
            Reporter: Andrii Tkach
            Assignee: Andrii Tkach
            Priority: Critical
             Fix For: 1.7.0


Host details page allows adding any uninstalled client component and some non-client component
to the host. 
But there are some components that have a host scope dependencies on another components. For
example, Slider client won't function properly if HDFS client and YARN client are not installed
with it on the same host and thus slider client has host scope dependencies on HDFS and YARN
client. Such information is available from API.

As a part of this ticket, ambari-web should maintain a map of host scope dependencies for
every component in StackServiceComponent model. 
On host page while adding a component, ambari-web code should check if the component's host
scope dependencies are installed or not on that host. If not then show a single button ("OK")
popup window informing the user to install them first:
*popup window message:* 

{code}"${ComponentNameTobeAdded} requires ${componentName},${componentName} and ${componentName}
to be installed along with it. Please add them first and then try adding ${{ComponentNameTobeAdded}"{code}




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