[jira] [Resolved] (AMBARI-21580) Replace Hard Coded stack-select Structures

["Jonathan Hurley (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/AMBARI-21580?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jonathan Hurley resolved AMBARI-21580.
--------------------------------------
    Resolution: Fixed

> Replace Hard Coded stack-select Structures
> ------------------------------------------
>
>                 Key: AMBARI-21580
>                 URL: https://issues.apache.org/jira/browse/AMBARI-21580
>             Project: Ambari
>          Issue Type: Task
>    Affects Versions: 2.5.3
>            Reporter: Jonathan Hurley
>            Assignee: Jonathan Hurley
>            Priority: Critical
>             Fix For: 2.5.3
>
>
> Currently, both the stack-select and conf-select python files have hard-coded structures inside of them which contain mappings for things like configuration directories and stack-select component names. 
> This is mainly used for pairing the Ambari role name (defined from metainfo.xml) with the {{stack-select}} package name. There are places, like {{params.py}} where we have not yet entered the target python file (like {{AccumuloScript}}) where we could get this information. Some components need this to be able to build things like the Hadoop conf dir:
> {code:title=stack_select.py}
> SERVER_ROLE_DIRECTORY_MAP = {
>   'ACCUMULO_MASTER' : 'accumulo-master',
>   'ACCUMULO_MONITOR' : 'accumulo-monitor',
>   'ACCUMULO_GC' : 'accumulo-gc',
>   'ACCUMULO_TRACER' : 'accumulo-tracer',
>   'ACCUMULO_TSERVER' : 'accumulo-tablet',
>   'ATLAS_SERVER' : 'atlas-server',
>   'FLUME_HANDLER' : 'flume-server',
>   'FALCON_SERVER' : 'falcon-server',
> ...
> {code}
> With the coming of management packs replacing stacks, we can no longer hard code this in Python. My suggestion is to begin moving this data into a property of some sort. Today, {{cluster-env}} exists and would be the only place for it (where the stack-feature tools are now). However, I believe that {{cluster-env}} is also going away and being replaced with something similar to "Cluster Settings". 
> In any event, this Jira is to track the work needed to replace this logic.



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