rescue_different_error.rb

require 'embulk'

Embulk.setup

class MyError1 < ::Embulk::DataError; end
class MyError2 < ::Embulk::DataError; end

begin
  raise MyError1.new("hoge")
rescue MyError2 => e
  puts "Why come here? error_class => #{e.class}, rescue MyError2."
  puts "e.kind_of?(MyError1) #=> #{e.kind_of?(MyError1)}"
  puts "e.kind_of?(MyError2) #=> #{e.kind_of?(MyError2)}"
end

result.txt

Why come here? error_class => MyError1, rescue MyError2.
e.kind_of?(MyError1) #=> true
e.kind_of?(MyError2) #=> false