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Date: Fri, 24 Jan 2014 00:27:37 +0000 (UTC)
From: "Siddharth Wagle (JIRA)" <jira@apache.org>
To: dev@ambari.apache.org
Message-ID: <JIRA.12683883.1386697490405.4148.1390523257616@arcas>
In-Reply-To: <JIRA.12683883.1386697490405@arcas>
References: <JIRA.12683883.1386697490405@arcas>
Subject: [jira] [Resolved] (AMBARI-4032) Ability to schedule a recurring
 request execution of an Action/Command
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     [ https://issues.apache.org/jira/browse/AMBARI-4032?page=3Dcom.atlassi=
an.jira.plugin.system.issuetabpanels:all-tabpanel ]

Siddharth Wagle resolved AMBARI-4032.
-------------------------------------

    Resolution: Fixed

All sub-tasks closed.

> Ability to schedule a recurring request execution of an Action/Command
> ----------------------------------------------------------------------
>
>                 Key: AMBARI-4032
>                 URL: https://issues.apache.org/jira/browse/AMBARI-4032
>             Project: Ambari
>          Issue Type: New Feature
>          Components: controller
>    Affects Versions: 1.5.0
>            Reporter: Siddharth Wagle
>            Assignee: Siddharth Wagle
>             Fix For: 1.5.0
>
>
> *Definitions*
> _Request Schedule Resource_
> A request schedule resource captures all the information required to crea=
te a request for executing a =E2=80=9CCustom Action=E2=80=9D or a =E2=80=9C=
Custom Command=E2=80=9D or a =E2=80=9CFirst Class Command: (Start, Stop, Re=
start)=E2=80=9D with a recurring schedule or a point in time execution if n=
o schedule is specified.
> *Scenarios to support*
> 1. _Rolling restart of Host Components / Service components_
> Restart services with zero/minimal downtime for upgrades or configuration=
 changes. You can do a rolling restart on individual services (HDFS, MapRed=
uce, HBase, ZooKeeper, etc). Rolling restart also lets you choose which ser=
vice components (Namenode, etc.) to restart.
> 2. _Rebalancer_
> Rebalancer is a sample of a custom action that can be executed to initiat=
e HDFS block rebalance. This could be a one time task or a recurring task (=
e.g. rebalance once each week at a specific time).


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