CLI command(s) to update YARN Capacity Scheduler Queues?

[#1]

I need a way to update our YARN Capacity Scheduler Queues from a script.

Currently, we have some processes that run at night, and sometimes the queues are not set properly. I need the script to be able to update the queues.

Does the YARN CLI support this?

If not, does the Ambari CLI? And if so, how?

Thanks!

[#2 · Accepted solution]

@Zack Riesland

You can use ambari REST API to update YARN capacity scheduler queues. An example is given in the following link:

https://community.hortonworks.com/questions/33578/api-to-manage-yarn-capacity-queue.html

[#3]

One note:

The example linked lists "tag":"version14534007568115" in the JSON sent to Ambari.

Through trial-and-error, it looks like this must include a valid timestamp AFTER the most recent change to the queue configs, otherwise the command fails with a huge stack trace that isn't clear.