Configure queue mapping to use the user name from the application tag

You can configure queue mapping to use the user name from the application tag instead of the proxy user who submitted the job. For example, the runs Hive Queries submitted from HiveServer2 in the queue mapped from an end user instead of a hive user.

How to configure queue mapping

In Cloudera Manager, select the YARN service.
Click the Configuration tab.
Search for scheduler.
In Capacity Scheduler Configuration Advanced Configuration Snippet (Safety Valve) add the following:
1. Enable the application-tag-based-placement property to enable application placement based on the user ID passed using the application tags.
```
Name: yarn.resourcemanager.application-tag-based-placement.enable
Value: true
Description: Set to "true" to enable application placement based on the user ID passed using the application tags. When it is enabled, it checks for the userid=<userId> pattern and if found, the application will be placed onto the found user's queue, if the original user has the required rights on the passed user's queue.
```
2. Add the list of whitelist users who can use application tag based placement. The applications when the submitting user is whitelisted, will be placed onto the queue defined in the yarn.scheduler.capacity.queue-mappings property defined for the user from the application tag. If there is no user defined, the submitting user will be used.
```
Name: yarn.resourcemanager.application-tag-based-placement.username.whitelist
Value: <Hive process user(s)>
Description: Comma separated list of users who can use the application tag based placement, if "yarn.resourcemanager.application-tag-based-placement.enable" is enabled.
```
  note
  Check the Hive system user value(s) and add the value(s) to the allowlist:
  1. In Cloudera Manager, navigate to Hive > Configuration.
  2. Search for System User.
  3. Note down the value(s) set as process username(s), and add the value(s) to the allowlist.