diff --git a/example/copy_roundrobin.conf b/example/copy_roundrobin.conf
index 935d29a45c..a05cabd9bc 100644
--- a/example/copy_roundrobin.conf
+++ b/example/copy_roundrobin.conf
@@ -1,12 +1,12 @@
 <source>
-  @type  dummy
+  @type  sample
   @label @test
   tag    test.copy
   auto_increment_key id
 </source>
 
 <source>
-  @type dummy
+  @type sample
   @label @test
   tag    test.rr
   auto_increment_key id
@@ -36,4 +36,4 @@
       output_type ltsv
     </store>
   </match>
-</label>
\ No newline at end of file
+</label>
diff --git a/example/counter.conf b/example/counter.conf
index e8fcbaf6a8..0b394991de 100644
--- a/example/counter.conf
+++ b/example/counter.conf
@@ -8,7 +8,7 @@
 </system>
 
 <source>
-  @type dummy
+  @type sample
   tag "test.data"
   auto_increment_key number
 </source>
diff --git a/example/filter_stdout.conf b/example/filter_stdout.conf
index 5754fea023..08b582a8fb 100644
--- a/example/filter_stdout.conf
+++ b/example/filter_stdout.conf
@@ -1,6 +1,6 @@
 <source>
-  @type dummy
-  tag dummy
+  @type sample
+  tag sample
 </source>
 
 <filter **>
diff --git a/example/in_dummy_blocks.conf b/example/in_sample_blocks.conf
similarity index 61%
rename from example/in_dummy_blocks.conf
rename to example/in_sample_blocks.conf
index b1635d9425..8977b367d8 100644
--- a/example/in_dummy_blocks.conf
+++ b/example/in_sample_blocks.conf
@@ -1,11 +1,11 @@
 <source>
-  @type dummy
-  tag dummy
+  @type sample
+  tag sample
   rate 100
-  dummy {"message":"yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay"}
+  sample {"message":"yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay"}
 </source>
 
-<match dummy>
+<match sample>
   @type null
   never_flush true
   <buffer>
diff --git a/example/in_dummy_with_compression.conf b/example/in_sample_with_compression.conf
similarity index 68%
rename from example/in_dummy_with_compression.conf
rename to example/in_sample_with_compression.conf
index 55dda796e2..d46eaedeee 100644
--- a/example/in_dummy_with_compression.conf
+++ b/example/in_sample_with_compression.conf
@@ -1,16 +1,16 @@
 <source>
-  @type dummy
+  @type sample
   @label @main
   tag "test.data"
   size 2
   rate 10
-  dummy {"message":"yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay"}
+  sample {"message":"yaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaay"}
   auto_increment_key number
 </source>
 
 <label @main>
   <match test.data>
-    @type buffered_stdout
+    @type stdout
     <buffer>
       @type file
       path "#{Dir.pwd}/compressed_buffers"
diff --git a/example/logevents.conf b/example/logevents.conf
index 7b1b55182d..51838b7515 100644
--- a/example/logevents.conf
+++ b/example/logevents.conf
@@ -1,10 +1,10 @@
 <source>
-  @type dummy
-  @label @dummylog
+  @type sample
+  @label @samplelog
   tag "data"
-  dummy {"message":"yay"}
+  sample {"message":"yay"}
 </source>
-<label @dummylog>
+<label @samplelog>
   <match **>
     @type stdout
   </match>
@@ -22,4 +22,4 @@
   #     hostname_key "host"
   #   </inject>
   # </match>
-</label> 
\ No newline at end of file
+</label>
diff --git a/example/multi_filters.conf b/example/multi_filters.conf
index 0a33d211e8..02a2ab8a7b 100644
--- a/example/multi_filters.conf
+++ b/example/multi_filters.conf
@@ -1,7 +1,7 @@
 # This example is to measure optimized filter pipeline performance.
 
 <source>
-  @type dummy
+  @type sample
   tag   test
   size 1000
 </source>
diff --git a/example/out_exec_filter.conf b/example/out_exec_filter.conf
index 5ec0f26c5d..5f6d2f48ae 100644
--- a/example/out_exec_filter.conf
+++ b/example/out_exec_filter.conf
@@ -1,10 +1,10 @@
 <source>
-  @type dummy
+  @type sample
   @label @exec
   tag exec_input
   rate 10
   auto_increment_key num
-  dummy {"data":"mydata"}
+  sample {"data":"mydata"}
 </source>
 
 <label @exec>
diff --git a/example/out_forward.conf b/example/out_forward.conf
index 276f47d116..a1fe4c2c79 100644
--- a/example/out_forward.conf
+++ b/example/out_forward.conf
@@ -1,5 +1,5 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 
diff --git a/example/out_forward_buf_file.conf b/example/out_forward_buf_file.conf
index 299506d1fe..9fffe079f6 100644
--- a/example/out_forward_buf_file.conf
+++ b/example/out_forward_buf_file.conf
@@ -1,5 +1,5 @@
 <source>
-    @type dummy
+    @type sample
     tag test
 </source>
 
diff --git a/example/out_forward_client.conf b/example/out_forward_client.conf
index e202fc9da0..bb07b9da17 100644
--- a/example/out_forward_client.conf
+++ b/example/out_forward_client.conf
@@ -1,21 +1,21 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test2
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test3
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test4
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test5
 </source>
 
diff --git a/example/out_forward_heartbeat_none.conf b/example/out_forward_heartbeat_none.conf
index 8fa0dbec1b..f51f23e0a6 100644
--- a/example/out_forward_heartbeat_none.conf
+++ b/example/out_forward_heartbeat_none.conf
@@ -1,5 +1,5 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 
diff --git a/example/out_forward_sd.conf b/example/out_forward_sd.conf
index 1d5c695262..3503a7cb81 100644
--- a/example/out_forward_sd.conf
+++ b/example/out_forward_sd.conf
@@ -1,5 +1,5 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 
diff --git a/example/out_forward_shared_key.conf b/example/out_forward_shared_key.conf
index 99c680eaf3..142e610e3d 100644
--- a/example/out_forward_shared_key.conf
+++ b/example/out_forward_shared_key.conf
@@ -1,9 +1,9 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test2
 </source>
 
diff --git a/example/out_forward_tls.conf b/example/out_forward_tls.conf
index d6dfb8a719..b852767228 100644
--- a/example/out_forward_tls.conf
+++ b/example/out_forward_tls.conf
@@ -1,5 +1,5 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 
diff --git a/example/out_forward_users.conf b/example/out_forward_users.conf
index a21af6d4a4..2769e06832 100644
--- a/example/out_forward_users.conf
+++ b/example/out_forward_users.conf
@@ -1,13 +1,13 @@
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test2
 </source>
 <source>
-  @type dummy
+  @type sample
   tag test3
 </source>
 
diff --git a/example/out_null.conf b/example/out_null.conf
index 0c13dd4769..ba3d86be3a 100644
--- a/example/out_null.conf
+++ b/example/out_null.conf
@@ -2,17 +2,17 @@
 # bundle exec bin/fluentd -c example/out_buffered_null.conf
 #   (+ --emit-error-log-interval 10)
 <source>
-  @type dummy
-  tag dummy
+  @type sample
+  tag sample
   rate 500000000
-  dummy [
+  sample [
     {"message": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa"},
     {"message": "bbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb"},
     {"message": "ccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc"}
   ]
 </source>
 
-<match dummy.**>
+<match sample.**>
   @type null
   <buffer>
     flush_interval 60s
diff --git a/example/secondary_file.conf b/example/secondary_file.conf
index 6b94e860eb..049097e59f 100644
--- a/example/secondary_file.conf
+++ b/example/secondary_file.conf
@@ -3,7 +3,7 @@
 </system>
 
 <source>
-  @type dummy
+  @type sample
   tag test
 </source>
 
diff --git a/lib/fluent/plugin/in_dummy.rb b/lib/fluent/plugin/in_dummy.rb
index 9338a59e72..c8078081e9 100644
--- a/lib/fluent/plugin/in_dummy.rb
+++ b/lib/fluent/plugin/in_dummy.rb
@@ -14,126 +14,5 @@
 #    limitations under the License.
 #
 
-require 'json'
-
-require 'fluent/plugin/input'
-require 'fluent/config/error'
-
-module Fluent::Plugin
-  class DummyInput < Input
-    Fluent::Plugin.register_input('dummy', self)
-
-    helpers :thread, :storage
-
-    BIN_NUM = 10
-    DEFAULT_STORAGE_TYPE = 'local'
-
-    desc "The value is the tag assigned to the generated events."
-    config_param :tag, :string
-    desc "The number of events in event stream of each emits."
-    config_param :size, :integer, default: 1
-    desc "It configures how many events to generate per second."
-    config_param :rate, :integer, default: 1
-    desc "If specified, each generated event has an auto-incremented key field."
-    config_param :auto_increment_key, :string, default: nil
-    desc "The boolean to suspend-and-resume incremental value after restart"
-    config_param :suspend, :bool, default: false,deprecated: 'This parameters is ignored'
-    desc "The dummy data to be generated. An array of JSON hashes or a single JSON hash."
-    config_param :dummy, default: [{"message"=>"dummy"}] do |val|
-      begin
-        parsed = JSON.parse(val)
-      rescue JSON::ParserError => ex
-        # Fluent::ConfigParseError, "got incomplete JSON" will be raised
-        # at literal_parser.rb with --use-v1-config, but I had to
-        # take care at here for the case of --use-v0-config.
-        raise Fluent::ConfigError, "#{ex.class}: #{ex.message}"
-      end
-      dummy = parsed.is_a?(Array) ? parsed : [parsed]
-      dummy.each_with_index do |e, i|
-        raise Fluent::ConfigError, "#{i}th element of dummy, #{e}, is not a hash" unless e.is_a?(Hash)
-      end
-      dummy
-    end
-
-    def initialize
-      super
-      @storage = nil
-    end
-
-    def configure(conf)
-      super
-      @dummy_index = 0
-      config = conf.elements.select{|e| e.name == 'storage' }.first
-      @storage = storage_create(usage: 'suspend', conf: config, default_type: DEFAULT_STORAGE_TYPE)
-    end
-
-    def multi_workers_ready?
-      true
-    end
-
-    def start
-      super
-
-      @storage.put(:increment_value, 0) unless @storage.get(:increment_value)
-      @storage.put(:dummy_index, 0) unless @storage.get(:dummy_index)
-
-      if @auto_increment_key && !@storage.get(:auto_increment_value)
-        @storage.put(:auto_increment_value, -1)
-      end
-
-      thread_create(:dummy_input, &method(:run))
-    end
-
-    def run
-      batch_num    = (@rate / BIN_NUM).to_i
-      residual_num = (@rate % BIN_NUM)
-      while thread_current_running?
-        current_time = Time.now.to_i
-        BIN_NUM.times do
-          break unless (thread_current_running? && Time.now.to_i <= current_time)
-          wait(0.1) { emit(batch_num) }
-        end
-        emit(residual_num) if thread_current_running?
-        # wait for next second
-        while thread_current_running? && Time.now.to_i <= current_time
-          sleep 0.01
-        end
-      end
-    end
-
-    def emit(num)
-      begin
-        if @size > 1
-          num.times do
-            router.emit_array(@tag, Array.new(@size) { [Fluent::EventTime.now, generate] })
-          end
-        else
-          num.times { router.emit(@tag, Fluent::EventTime.now, generate) }
-        end
-      rescue => _
-        # ignore all errors not to stop emits by emit errors
-      end
-    end
-
-    def generate
-      d = @dummy[@dummy_index]
-      unless d
-        @dummy_index = 0
-        d = @dummy[@dummy_index]
-      end
-      @dummy_index += 1
-      if @auto_increment_key
-        d = d.dup
-        d[@auto_increment_key] = @storage.update(:auto_increment_value){|v| v + 1 }
-      end
-      d
-    end
-
-    def wait(time)
-      start_time = Time.now
-      yield
-      sleep_time = time - (Time.now - start_time)
-      sleep sleep_time if sleep_time > 0
-    end
-  end
-end
+# Remove this file in fluentd v2
+require_relative 'in_sample'
diff --git a/lib/fluent/plugin/in_http.rb b/lib/fluent/plugin/in_http.rb
index 8385587211..06fea2ec9a 100644
--- a/lib/fluent/plugin/in_http.rb
+++ b/lib/fluent/plugin/in_http.rb
@@ -72,7 +72,7 @@ class HttpInput < Input
     desc 'Add REMOTE_ADDR header to the record.'
     config_param :add_remote_addr, :bool, default: false
     config_param :blocking_timeout, :time, default: 0.5
-    desc 'Set a white list of domains that can do CORS (Cross-Origin Resource Sharing)'
+    desc 'Set a allow list of domains that can do CORS (Cross-Origin Resource Sharing)'
     config_param :cors_allow_origins, :array, default: nil
     desc 'Respond with empty gif image of 1x1 pixel.'
     config_param :respond_with_empty_img, :bool, default: false
@@ -490,7 +490,7 @@ def on_message_complete
         # CORS check
         # ==========
         # For every incoming request, we check if we have some CORS
-        # restrictions and white listed origins through @cors_allow_origins.
+        # restrictions and allow listed origins through @cors_allow_origins.
         unless @cors_allow_origins.nil?
           unless @cors_allow_origins.include?('*') or include_cors_allow_origin
             send_response_and_close(RES_403_STATUS, {'Connection' => 'close'}, "")
diff --git a/lib/fluent/plugin/in_sample.rb b/lib/fluent/plugin/in_sample.rb
new file mode 100644
index 0000000000..6f36762e03
--- /dev/null
+++ b/lib/fluent/plugin/in_sample.rb
@@ -0,0 +1,141 @@
+#
+# Fluentd
+#
+#    Licensed under the Apache License, Version 2.0 (the "License");
+#    you may not use this file except in compliance with the License.
+#    You may obtain a copy of the License at
+#
+#        http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS,
+#    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+#    See the License for the specific language governing permissions and
+#    limitations under the License.
+#
+
+require 'json'
+
+require 'fluent/plugin/input'
+require 'fluent/config/error'
+
+module Fluent::Plugin
+  class SampleInput < Input
+    Fluent::Plugin.register_input('sample', self)
+    Fluent::Plugin.register_input('dummy', self)
+
+    helpers :thread, :storage
+
+    BIN_NUM = 10
+    DEFAULT_STORAGE_TYPE = 'local'
+
+    desc "The value is the tag assigned to the generated events."
+    config_param :tag, :string
+    desc "The number of events in event stream of each emits."
+    config_param :size, :integer, default: 1
+    desc "It configures how many events to generate per second."
+    config_param :rate, :integer, default: 1
+    desc "If specified, each generated event has an auto-incremented key field."
+    config_param :auto_increment_key, :string, default: nil
+    desc "The boolean to suspend-and-resume incremental value after restart"
+    config_param :suspend, :bool, default: false,deprecated: 'This parameters is ignored'
+    desc "The sample data to be generated. An array of JSON hashes or a single JSON hash."
+    config_param :sample, alias: :dummy, default: [{"message" => "sample"}] do |val|
+      begin
+        parsed = JSON.parse(val)
+      rescue JSON::ParserError => ex
+        # Fluent::ConfigParseError, "got incomplete JSON" will be raised
+        # at literal_parser.rb with --use-v1-config, but I had to
+        # take care at here for the case of --use-v0-config.
+        raise Fluent::ConfigError, "#{ex.class}: #{ex.message}"
+      end
+      sample = parsed.is_a?(Array) ? parsed : [parsed]
+      sample.each_with_index do |e, i|
+        raise Fluent::ConfigError, "#{i}th element of sample, #{e}, is not a hash" unless e.is_a?(Hash)
+      end
+      sample
+    end
+
+    def initialize
+      super
+      @storage = nil
+    end
+
+    def configure(conf)
+      super
+      @sample_index = 0
+      config = conf.elements.select{|e| e.name == 'storage' }.first
+      @storage = storage_create(usage: 'suspend', conf: config, default_type: DEFAULT_STORAGE_TYPE)
+    end
+
+    def multi_workers_ready?
+      true
+    end
+
+    def start
+      super
+
+      @storage.put(:increment_value, 0) unless @storage.get(:increment_value)
+      # keep 'dummy' to avoid breaking changes for existing environment. Change it in fluentd v2
+      @storage.put(:dummy_index, 0) unless @storage.get(:dummy_index)
+
+      if @auto_increment_key && !@storage.get(:auto_increment_value)
+        @storage.put(:auto_increment_value, -1)
+      end
+
+      thread_create(:sample_input, &method(:run))
+    end
+
+    def run
+      batch_num    = (@rate / BIN_NUM).to_i
+      residual_num = (@rate % BIN_NUM)
+      while thread_current_running?
+        current_time = Time.now.to_i
+        BIN_NUM.times do
+          break unless (thread_current_running? && Time.now.to_i <= current_time)
+          wait(0.1) { emit(batch_num) }
+        end
+        emit(residual_num) if thread_current_running?
+        # wait for next second
+        while thread_current_running? && Time.now.to_i <= current_time
+          sleep 0.01
+        end
+      end
+    end
+
+    def emit(num)
+      begin
+        if @size > 1
+          num.times do
+            router.emit_array(@tag, Array.new(@size) { [Fluent::EventTime.now, generate] })
+          end
+        else
+          num.times { router.emit(@tag, Fluent::EventTime.now, generate) }
+        end
+      rescue => _
+        # ignore all errors not to stop emits by emit errors
+      end
+    end
+
+    def generate
+      d = @sample[@sample_index]
+      unless d
+        @sample_index = 0
+        d = @sample[@sample_index]
+      end
+      @sample_index += 1
+      if @auto_increment_key
+        d = d.dup
+        d[@auto_increment_key] = @storage.update(:auto_increment_value){|v| v + 1 }
+      end
+      d
+    end
+
+    def wait(time)
+      start_time = Time.now
+      yield
+      sleep_time = time - (Time.now - start_time)
+      sleep sleep_time if sleep_time > 0
+    end
+  end
+end
diff --git a/test/plugin/test_in_dummy.rb b/test/plugin/test_in_sample.rb
similarity index 77%
rename from test/plugin/test_in_dummy.rb
rename to test/plugin/test_in_sample.rb
index 594d5facf0..be5aa48368 100644
--- a/test/plugin/test_in_dummy.rb
+++ b/test/plugin/test_in_sample.rb
@@ -1,33 +1,33 @@
 require_relative '../helper'
 require 'fluent/test/driver/input'
-require 'fluent/plugin/in_dummy'
+require 'fluent/plugin/in_sample'
 require 'fileutils'
 
-class DummyTest < Test::Unit::TestCase
+class SampleTest < Test::Unit::TestCase
   def setup
     Fluent::Test.setup
   end
 
   def create_driver(conf)
-    Fluent::Test::Driver::Input.new(Fluent::Plugin::DummyInput).configure(conf)
+    Fluent::Test::Driver::Input.new(Fluent::Plugin::SampleInput).configure(conf)
   end
 
   sub_test_case 'configure' do
     test 'required parameters' do
       assert_raise_message("'tag' parameter is required") do
-        Fluent::Plugin::DummyInput.new.configure(config_element('ROOT',''))
+        Fluent::Plugin::SampleInput.new.configure(config_element('ROOT',''))
       end
     end
 
     test 'tag' do
       d = create_driver(%[
-        tag dummy
+        tag sample
       ])
-      assert_equal "dummy", d.instance.tag
+      assert_equal "sample", d.instance.tag
     end
 
     config = %[
-      tag dummy
+      tag sample
     ]
 
     test 'auto_increment_key' do
@@ -44,30 +44,30 @@ def create_driver(conf)
       assert_equal 10, d.instance.rate
     end
 
-    test 'dummy' do
+    test 'sample' do
       # hash is okay
-      d = create_driver(config + %[dummy {"foo":"bar"}])
-      assert_equal [{"foo"=>"bar"}], d.instance.dummy
+      d = create_driver(config + %[sample {"foo":"bar"}])
+      assert_equal [{"foo"=>"bar"}], d.instance.sample
 
       # array of hash is okay
-      d = create_driver(config + %[dummy [{"foo":"bar"}]])
-      assert_equal [{"foo"=>"bar"}], d.instance.dummy
+      d = create_driver(config + %[sample [{"foo":"bar"}]])
+      assert_equal [{"foo"=>"bar"}], d.instance.sample
 
       assert_raise_message(/JSON::ParserError|got incomplete JSON/) do
-        create_driver(config + %[dummy "foo"])
+        create_driver(config + %[sample "foo"])
       end
 
       assert_raise_message(/is not a hash/) do
-        create_driver(config + %[dummy ["foo"]])
+        create_driver(config + %[sample ["foo"]])
       end
     end
   end
 
   sub_test_case "emit" do
     config = %[
-      tag dummy
+      tag sample
       rate 10
-      dummy {"foo":"bar"}
+      sample {"foo":"bar"}
     ]
 
     test 'simple' do
@@ -75,7 +75,7 @@ def create_driver(conf)
       d.run(timeout: 0.5)
 
       d.events.each do |tag, time, record|
-        assert_equal("dummy", tag)
+        assert_equal("sample", tag)
         assert_equal({"foo"=>"bar"}, record)
         assert(time.is_a?(Fluent::EventTime))
       end
@@ -86,20 +86,20 @@ def create_driver(conf)
       d.run(timeout: 0.5)
 
       d.events.each_with_index do |(tag, _time, record), i|
-        assert_equal("dummy", tag)
+        assert_equal("sample", tag)
         assert_equal({"foo"=>"bar", "id"=>i}, record)
       end
     end
   end
 
-  TEST_PLUGIN_STORAGE_PATH = File.join( File.dirname(File.dirname(__FILE__)), 'tmp', 'in_dummy', 'store' )
+  TEST_PLUGIN_STORAGE_PATH = File.join( File.dirname(File.dirname(__FILE__)), 'tmp', 'in_sample', 'store' )
   FileUtils.mkdir_p TEST_PLUGIN_STORAGE_PATH
 
-  sub_test_case 'when dummy plugin has storage which is not specified the path'  do
+  sub_test_case 'when sample plugin has storage which is not specified the path'  do
     config1 = {
-      'tag' => 'dummy',
+      'tag' => 'sample',
       'rate' => '0',
-      'dummy' => '[{"x": 1, "y": "1"}, {"x": 2, "y": "2"}, {"x": 3, "y": "3"}]',
+      'sample' => '[{"x": 1, "y": "1"}, {"x": 2, "y": "2"}, {"x": 3, "y": "3"}]',
       'auto_increment_key' => 'id',
     }
     conf1 = config_element('ROOT', '', config1, [])
@@ -135,7 +135,7 @@ def create_driver(conf)
     end
   end
 
-  sub_test_case 'when dummy plugin has storage which is specified the path'  do
+  sub_test_case 'when sample plugin has storage which is specified the path'  do
     setup do
       FileUtils.rm_rf(TEST_PLUGIN_STORAGE_PATH)
       FileUtils.mkdir_p(File.join(TEST_PLUGIN_STORAGE_PATH, 'json'))
@@ -144,9 +144,9 @@ def create_driver(conf)
 
     config2 = {
       '@id' => 'test-02',
-      'tag' => 'dummy',
+      'tag' => 'sample',
       'rate' => '0',
-      'dummy' => '[{"x": 1, "y": "1"}, {"x": 2, "y": "2"}, {"x": 3, "y": "3"}]',
+      'sample' => '[{"x": 1, "y": "1"}, {"x": 2, "y": "2"}, {"x": 3, "y": "3"}]',
       'auto_increment_key' => 'id',
     }
     conf2 = config_element('ROOT', '', config2, [
diff --git a/test/test_static_config_analysis.rb b/test/test_static_config_analysis.rb
index 50477db2f2..d2792e4329 100644
--- a/test/test_static_config_analysis.rb
+++ b/test/test_static_config_analysis.rb
@@ -6,7 +6,7 @@
 require 'fluent/plugin/out_stdout'
 require 'fluent/plugin/out_exec'
 require 'fluent/plugin/in_forward'
-require 'fluent/plugin/in_dummy'
+require 'fluent/plugin/in_sample'
 require 'fluent/plugin/filter_grep'
 require 'fluent/plugin/filter_stdout'
 require 'fluent/plugin/filter_parser'
@@ -74,7 +74,7 @@ class StaticConfigAnalysisTest < ::Test::Unit::TestCase
       c = Fluent::Config.parse(conf_data, '(test)', '(test_dir)', true)
       ret = Fluent::StaticConfigAnalysis.call(c)
       assert_equal [Fluent::Plugin::ExecOutput, Fluent::Plugin::StdoutOutput, Fluent::Plugin::ForwardOutput], ret.outputs.map(&:plugin).map(&:class)
-      assert_equal [Fluent::Plugin::DummyInput, Fluent::Plugin::ForwardInput], ret.inputs.map(&:plugin).map(&:class)
+      assert_equal [Fluent::Plugin::SampleInput, Fluent::Plugin::ForwardInput], ret.inputs.map(&:plugin).map(&:class)
       assert_equal [Fluent::Plugin::ParserFilter, Fluent::Plugin::StdoutFilter, Fluent::Plugin::GrepFilter], ret.filters.map(&:plugin).map(&:class)
       assert_equal 1, ret.labels.size
       assert_equal '@test', ret.labels[0].name