Dmytro Sen created AMBARI-22815:
-----------------------------------
Summary: Change requiredServices in metainfo.xml
Key: AMBARI-22815
URL: https://issues.apache.org/jira/browse/AMBARI-22815
Project: Ambari
Issue Type: Bug
Components: ambari-server
Affects Versions: 3.0.0
Reporter: Dmytro Sen
Assignee: Dmytro Sen
Fix For: 3.0.0
Today we define requiredServices as follows
{code}
<requiredServices>
<service>ZOOKEEPER</service>
</requiredServices>
{code}
In the mpack model we need to categorize the scope of service dependency. We
could have an INSTALL time dependency (i.e. we should also install the
dependent service) or a RUNTIME dependency (i.e. there should be a running
instance of the service in the cluster).
For example HIVE in EDW mpack, will have an install-time dependency on
ZOOKEEPER-CLIENT but a RUNTIME dependency on ZOOKEEPER.
{code}
<requiredServices>
<service>
<name>ZOOKEEPER-CLIENT</name>
<scope>INSTALL</scope>
</service>
<service>
<name>ZOOKEEPER</name>
<scope>RUNTIME</scope>
</service>
</requiredServices>
{code}
We should also check how we maintain compatibility with legacy stack
definitions.
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