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https://issues.apache.org/jira/browse/AMBARI-20561?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Christopher Jackson resolved AMBARI-20561.
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Resolution: Duplicate
> Need mechanism to add one of a set of services as required in metainfo.xml
> file.
> ---------------------------------------------------------------------------------
>
> Key: AMBARI-20561
> URL: https://issues.apache.org/jira/browse/AMBARI-20561
> Project: Ambari
> Issue Type: Story
> Reporter: Christopher Jackson
>
> It appears that HDP 2.6 will support both Spark1 and Spark2. It will allow
> these services
> to be installed side by side and an environment variable will determine which
> is used when a process
> that needs spark is run.
> Services have a metainfo.xml file which they can list other services which
> are required for
> their service to function properly. If a service required Spark (any version)
> how would they
> define this in the metainfo.xml file? For instance I wouldn’t want the
> following as it would
> imply that both Spark 1.x and Spark 2.x had to be installed:
> {code}
> <requiredServices>
> <service>SPARK</service>
> <service>SPARK2</service>
> </requiredServices>
> {code}
> I also wouldn’t want to list only one or the other because this service
> supports both versions.
> There should be some sort of mechanism to
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