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https://issues.apache.org/jira/browse/AMBARI-20433?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15926589#comment-15926589
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Louis Mau commented on AMBARI-20433:
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Another example is HDFS having a static dependency on Zookeeper even though the
latter is not needed until HA is enabled. The check for Zookeeper is better
done during HA enablement rather than enforced at installation time when HA
might not be needed.
> Need the ability to have dynamic dependency between component/services
> ----------------------------------------------------------------------
>
> Key: AMBARI-20433
> URL: https://issues.apache.org/jira/browse/AMBARI-20433
> Project: Ambari
> Issue Type: Improvement
> Components: ambari-server
> Environment: all
> Reporter: Tuong Truong
>
> Currently, service interdependency are statically defined in the stack
> regardless its needed or not. For instance, Spark has a static dependency on
> Hive and will force Hive to be installed whenevern Spark is install, but Hive
> is only needed if Spark Thrift Server component is installed.
> It would be nice if the stack has to ability to declare the dependency
> conditionally and at component level and the dependency will only be in
> effect when the component is chosen.
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