@Anton P You are doing everything just fine, this is by design. The "Ordering Policy" can indeed only be set for leaf queues, because it defines the ordering policy between applications in the same queue. So it has nothing to do with your use case. "I try to run two Yarn queues where if only one queue is active it will consume all the resources and once a job will arrive to the second queue Yarn will preempt some of the resources of the first queue to start the second job." To achieve this, you need to configure your queues like this (I think, you already did this): yarn.scheduler.capacity.root.queues=test1,test2
yarn.scheduler.capacity.root.test1.capacity=50
yarn.scheduler.capacity.root.test1.maximum-capacity=100
yarn.scheduler.capacity.root.test2.capacity=50
yarn.scheduler.capacity.root.test2.maximum-capacity=100
... and enable preemption (as described in the article you attached). This will let the first application in the first queue to use all the resources, until the second job arrives to the second queue, then the resources will be devided equally between the two queues. Hope this makes everything clear, give it a try 🙂
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