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YARN-3187. Documentation of Capacity Scheduler Queue mapping based on user or group. Contributed by Gururaj Shetty 

(cherry picked from commit a380643d20)
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Jian He 2015-03-10 10:54:08 -07:00
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3
hadoop-yarn-project/CHANGES.txt
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@ -339,6 +339,9 @@ Release 2.7.0 - UNRELEASED
YARN-3296. Mark ResourceCalculatorProcessTree class as Public for configurable
resource monitoring. (Hitesh Shah via junping_du)
YARN-3187. Documentation of Capacity Scheduler Queue mapping based on user
or group. (Gururaj Shetty via jianhe)
OPTIMIZATIONS
YARN-2990. FairScheduler's delay-scheduling always waits for node-local and

26
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-site/src/site/markdown/CapacityScheduler.md
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@ -69,6 +69,8 @@ The `CapacityScheduler` supports the following features:
* **Resource-based Scheduling** - Support for resource-intensive applications, where-in a application can optionally specify higher resource-requirements than the default, there-by accomodating applications with differing resource requirements. Currently, *memory* is the the resource requirement supported.
* **Queue Mapping based on User or Group** - This feature allows users to map a job to a specific queue based on the user or group.
Configuration
-------------
@ -151,6 +153,30 @@ Configuration
**Note:** An *ACL* is of the form *user1*, *user2spacegroup1*, *group2*. The special value of * implies *anyone*. The special value of *space* implies *no one*. The default is * for the root queue if not specified.
* Queue Mapping based on User or Group
The `CapacityScheduler` supports the following parameters to configure the queue mapping based on user or group:
| Property | Description |
|:---- |:---- |
| `yarn.scheduler.capacity.queue-mappings` | This configuration specifies the mapping of user or group to aspecific queue. You can map a single user or a list of users to queues. Syntax: `[u or g]:[name]:[queue_name][,next_mapping]*`. Here, *u or g* indicates whether the mapping is for a user or group. The value is *u* for user and *g* for group. *name* indicates the user name or group name. To specify the user who has submitted the application, %user can be used. *queue_name* indicates the queue name for which the application has to be mapped. To specify queue name same as user name, *%user* can be used. To specify queue name same as the name of the primary group for which the user belongs to, *%primary_group* can be used.|
| `yarn.scheduler.capacity.queue-mappings-override.enable` | This function is used to specify whether the user specified queues can be overridden. This is a Boolean value and the default value is *false*. |
Example:
```
<property>
<name>yarn.scheduler.capacity.queue-mappings</name>
<value>u:user1:queue1,g:group1:queue2,u:%user:%user,u:user2:%primary_group</value>
<description>
Here, <user1> is mapped to <queue1>, <group1> is mapped to <queue2>,
maps users to queues with the same name as user, <user2> is mapped
to queue name same as <primary group> respectively. The mappings will be
evaluated from left to right, and the first valid mapping will be used.
</description>
</property>
```
###Other Properties
* Resource Calculator