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From "Wangda Tan (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-2693) Priority Label Manager in RM to manage application priority based on configuration
Date Tue, 17 Mar 2015 22:41:39 GMT

    [ https://issues.apache.org/jira/browse/YARN-2693?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14366225#comment-14366225
] 

Wangda Tan commented on YARN-2693:
----------------------------------

Some overall suggestions:
1) Instead of ApplicationPriorityPerQueue, queue's priority related fields could store in
scheduler.Queue directly (methods of scheduler.Queue, implementation for different scheduler
could be various. Since we have different scheduler configuration). Benefits of doing this:
- All other queue-specifc configurations are in schedulers' own configuration files, make
application-priority fields for queue storing out-of queue means you have to sync it with
queue's configuration when you do refreshQueues, etc.
- Put it in scheduler.Queue can make scheduler changes easier (don't have to access ApplicationPriorityManager).

2) Methods of ApplicationPriorityManager:
- Since we're discussing how to configure priority, I will review ApplicationPriorityManager
implementations once we close design.
- "ClusterPriorities" should be a range (If we start from zero, a "maxPriority" will be enough)
- getApplicationPriorityFromQueue should not exist, all queue related methods should be in
scheduler.Queue
- "isPriorityExistsInCluster" maybe not "existed", it should be something like "accepted".
- Can be reinitialize
- Can convert between number/label

> Priority Label Manager in RM to manage application priority based on configuration
> ----------------------------------------------------------------------------------
>
>                 Key: YARN-2693
>                 URL: https://issues.apache.org/jira/browse/YARN-2693
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: resourcemanager
>            Reporter: Sunil G
>            Assignee: Sunil G
>         Attachments: 0001-YARN-2693.patch, 0002-YARN-2693.patch, 0003-YARN-2693.patch,
0004-YARN-2693.patch, 0005-YARN-2693.patch, 0006-YARN-2693.patch
>
>
> Focus of this JIRA is to have a centralized service to handle priority labels.
> Support operations such as
> * Add/Delete priority label to a specified queue
> * Manage integer mapping associated with each priority label
> * Support managing default priority label of a given queue
> * Expose interface to RM to validate priority label
> TO have simplified interface, Priority Manager will support only configuration file in
contrast with admin cli and REST. 



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