parallel_activerecord_table_checker.rb

require 'parallel'

Benchmark.measure do
    query = ->(table) do
        result = ActiveRecord::Base.connection.execute("CHECK TABLE #{table} EXTENDED;").to_a
        puts result
        result
    end
    result = Parallel.map(ActiveRecord::Base.connection.tables, in_processes: 10) { |table| query.call(table)}
end