WordPress at a glance
filter is not described

action_scheduler_queue_runner_concurrent_batches filter-hook . WC 1.0

Get the number of concurrent batches a runner allows.

Usage

add_filter( 'action_scheduler_queue_runner_concurrent_batches', 'filter_function_name_8741' );
function filter_function_name_8741( $1 ){
	// filter...

	return $1;
}
$1
-

Where the hook is called

ActionScheduler_Abstract_QueueRunner::get_allowed_concurrent_batches()
action_scheduler_queue_runner_concurrent_batches
woocommerce/packages/action-scheduler/classes/abstracts/ActionScheduler_Abstract_QueueRunner.php 111
return apply_filters( 'action_scheduler_queue_runner_concurrent_batches', 1 );

Where in WP core the hook is used WooCommerce

Usage not found.