3.2. Configuring Queues

Capacity -- The percentage of cluster resources available to the queue. For a sub-queue, the percentage of parent queue resources.

Max Capacity -- The maximum percentage of cluster resources available to the queue. Setting this value tends to restrict elasticity, as the queue will be unable to utilize idle cluster resources beyond this setting.

Enable Node Labels -- Select this check box to enable node labels for the queue.

State -- Running is the default state. Setting this to Stopped lets you gracefully drain the queue of jobs (for example, before deleting a queue).

Administer Queue -- Click Custom to restrict administration of the queue to specific users and groups.

Submit Applications -- Click Custom to restrict the ability to run applications in the queue to specific users and groups.

User Limit Factor -- The default value of "1" means that any single user in the queue can at maximum only occupy the queue’s configured capacity. This prevents users in a single queue from monopolizing resources across all queues in a cluster. Setting the value to "2" would restrict the queue's users to twice the queue’s configured capacity. Setting it to a value of 0.5 would restrict any user from using resources beyond half of the queue capacity.

Minimum User Limit -- This property can be used to set the minimum percentage of resources allocated to each queue user. For example, to enable equal sharing of the queue capacity among five users, you would set this property to 20%.

Maximum Applications -- This setting enables you to override the Scheduler Maximum Applications setting (described in Configuring Cluster Scheduler Settings). The default setting is Inherited (no override).

Maximum AM Resource -- This setting enables you to override the Scheduler Maximum AM Resource setting (described in Configuring Cluster Scheduler Settings). The default setting is Inherited (no override).

Ordering Policy -- You can specify FIFO (First In, First Out) or fair (Fair Scheduler: applications get a fair share of capacity regardless of the order in which they were submitted).