question Re: CLI command(s) to update YARN Capacity Scheduler Queues? in Archives of Support Questions (Read Only)

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

zack_riesland — Tue, 02 May 2017 20:03:22 GMT

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!

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

mqureshi — Tue, 02 May 2017 21:15:09 GMT

@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

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

zack_riesland — Wed, 03 May 2017 01:24:47 GMT

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.