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From "Andrew Onischuk (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (AMBARI-12871) Ambari startup scripts exhibit long delays (5+ seconds each) on every "modifying user" operation. This adds a few minutes to the time it takes to start or restart any component, causing excessive downtime for every config change.
Date Wed, 26 Aug 2015 09:32:45 GMT

     [ https://issues.apache.org/jira/browse/AMBARI-12871?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Onischuk resolved AMBARI-12871.
--------------------------------------
    Resolution: Fixed

Committed to branch-2.1

> Ambari startup scripts exhibit long delays (5+ seconds each) on every "modifying user"
operation. This adds a few minutes to the time it takes to start or restart any component,
causing excessive downtime for every config change.
> -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: AMBARI-12871
>                 URL: https://issues.apache.org/jira/browse/AMBARI-12871
>             Project: Ambari
>          Issue Type: Bug
>            Reporter: Andrew Onischuk
>            Assignee: Andrew Onischuk
>             Fix For: 2.1.2
>
>
> PROBLEM: Customer use nslcd to fetch the user from AD server, it returns a lot
> of users and groups, this will slow down the ambari operation (start/stop
> service). As discussed with Florian Barca, The root cause is a limitation in
> the native API: grp.getgrall() has no ability to prefilter the results, which
> means it fetches all users from the LDAP directory exposed by nslcd. If it
> happen to be a large org, with a large number of users, so the fetch takes a
> long time. We need to optimize this and make the code scale with the number of
> users.



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