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From "Hadoop QA (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-21602) Pre-configure services when Kerberos is enabled to reduce number of core service restarts when services are added
Date Thu, 17 Aug 2017 10:54:00 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-21602?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16130243#comment-16130243
] 

Hadoop QA commented on AMBARI-21602:
------------------------------------

{color:green}+1 overall{color}.  Here are the results of testing the latest attachment 
  http://issues.apache.org/jira/secure/attachment/12882231/AMBARI-21602_trunk_01.patch
  against trunk revision .

    {color:green}+1 @author{color}.  The patch does not contain any @author tags.

    {color:green}+1 tests included{color}.  The patch appears to include 10 new or modified
test files.

    {color:green}+1 release audit{color}.  The applied patch does not increase the total number
of release audit warnings.

    {color:green}+1 javac{color}.  The applied patch does not increase the total number of
javac compiler warnings.

    {color:green}+1 core tests{color}.  The patch passed unit tests in ambari-server.

Console output: https://builds.apache.org/job/Ambari-trunk-test-patch/12008//console

This message is automatically generated.

> Pre-configure services when Kerberos is enabled to reduce number of core service restarts
when services are added
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-21602
>                 URL: https://issues.apache.org/jira/browse/AMBARI-21602
>             Project: Ambari
>          Issue Type: Task
>          Components: ambari-server
>    Affects Versions: 2.6.0
>            Reporter: Robert Levas
>            Assignee: Robert Levas
>             Fix For: 2.6.0
>
>         Attachments: AMBARI-21602_branch-2.6_01.patch, AMBARI-21602_trunk_01.patch
>
>
> Pre-configure (certain) services when Kerberos is enabled to reduce number of core service
restarts when services are added.  
> While processing the Kerberos descriptor, include services marked to be _pre-configured_.
 When a tagged service is encountered, process it weather it is installed or not. However
if it is not installed, only apply configuration changes for existing configuration types.
 This will set at least the core-site changes related to proxyuser and auth-to-local rules
properties. By doing this, if a tagged service is later installed, the settings will already
be in place in the existing service configs and thus the existing services will not need to
be restarted. 
> Caveats:
> * Default values for the uninstalled, tagged, services will be assumed 
> * The stack advisor will be used to suggest locations of components - used to build the
clusterHostInfo structure that may be used to derive property values. 
> Note: This processing is to occur when Kerberos is enabled. 



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