Key | Default | Type | Description
--- | --- | --- | ---

##### jobmanager.future-pool.size

(none)

Integer

The size of the future thread pool to execute future callbacks for all spawned JobMasters. If no value is specified, then Flink defaults to the number of available CPU cores.

##### jobmanager.io-pool.size

(none)

Integer

The size of the IO thread pool to run blocking operations for all spawned JobMasters. This includes recovery and completion of checkpoints. Increase this value if you experience slow checkpoint operations when running many jobs. If no value is specified, then Flink defaults to the number of available CPU cores.