diff --git a/dbms/src/Dictionaries/RedisBlockInputStream.h b/dbms/src/Dictionaries/RedisBlockInputStream.h
index d1c3ad157e9..f5117ec6a9c 100644
--- a/dbms/src/Dictionaries/RedisBlockInputStream.h
+++ b/dbms/src/Dictionaries/RedisBlockInputStream.h
@@ -17,7 +17,6 @@ namespace Poco
 
 namespace DB
 {
-/// Converts Redis Cursor to a stream of Blocks
     class RedisBlockInputStream final : public IBlockInputStream
     {
     public:
diff --git a/dbms/src/Dictionaries/RedisDictionarySource.h b/dbms/src/Dictionaries/RedisDictionarySource.h
index e3566731f06..d41e557ce24 100644
--- a/dbms/src/Dictionaries/RedisDictionarySource.h
+++ b/dbms/src/Dictionaries/RedisDictionarySource.h
@@ -22,7 +22,6 @@ namespace Poco
 
 namespace DB
 {
-/// Allows loading dictionaries from a Redis collection
     class RedisDictionarySource final : public IDictionarySource
     {
         RedisDictionarySource(
@@ -77,9 +76,3 @@ namespace DB
 
 }
 #endif
-
-/*namespace DB
-{
-class DictionarySourceFactory;
-void registerDictionarySourceRedis(DictionarySourceFactory & factory);
-}*/
diff --git a/dbms/tests/external_dictionaries/generate_and_test.py b/dbms/tests/external_dictionaries/generate_and_test.py
index ebcd62ece5c..90426962189 100755
--- a/dbms/tests/external_dictionaries/generate_and_test.py
+++ b/dbms/tests/external_dictionaries/generate_and_test.py
@@ -409,8 +409,6 @@ def generate_data(args):
             ") format JSON"
         ]))['data']
 
-        # print json.dumps(table_rows)
-
         # For Integers the first byte of the reply is ":"
         # For Bulk Strings the first byte of the reply is "$"
 
@@ -429,9 +427,6 @@ def generate_data(args):
 
                 proto_for_redis += "SET " + "$" + key + " " + value_type + str(value) + "\r\n"
 
-        # with open("clickhouse_redis.log", "w") as f:
-        #     f.write(json.dumps(table_rows) + "\n" + proto_for_redis + "\n")
-
         open('generated/full.json', 'w').write(proto_for_redis)
         result = system('cat {0}/full.json | redis-cli > \\dev\\null'.format(args.generated))
         if result != 0: