global_executor_concurrency=

# File activerecord/lib/active_record.rb, line 298
  def self.global_executor_concurrency=(global_executor_concurrency)
    if self.async_query_executor.nil? || self.async_query_executor == :multi_thread_pool
      raise ArgumentError, "`global_executor_concurrency` cannot be set when the executor is nil or set to `:multi_thread_pool`. For multiple thread pools, please set the concurrency in your database configuration."
    end

    @global_executor_concurrency = global_executor_concurrency
  end