diff --git a/programs/server/Server.cpp b/programs/server/Server.cpp
index 0019ba7e76c..da5760acc09 100644
--- a/programs/server/Server.cpp
+++ b/programs/server/Server.cpp
@@ -267,12 +267,6 @@ int Server::main(const std::vector<std::string> & /*args*/)
     registerDictionaries();
     registerDisks();
 
-#if !defined(ARCADIA_BUILD)
-#if USE_OPENCL
-    BitonicSort::getInstance().configure();
-#endif
-#endif
-
     CurrentMetrics::set(CurrentMetrics::Revision, ClickHouseRevision::getVersionRevision());
     CurrentMetrics::set(CurrentMetrics::VersionInteger, ClickHouseRevision::getVersionInteger());
 
diff --git a/utils/test-data-generator/CMakeLists.txt b/utils/test-data-generator/CMakeLists.txt
index 20c37854c0a..80d7d4301e7 100644
--- a/utils/test-data-generator/CMakeLists.txt
+++ b/utils/test-data-generator/CMakeLists.txt
@@ -9,4 +9,10 @@ if (USE_PROTOBUF)
     target_link_libraries (ProtobufDelimitedMessagesSerializer PRIVATE ${Protobuf_LIBRARY} boost::program_options)
     get_filename_component(ProtobufDelimitedMessagesSerializer_OutputDir "${CMAKE_CURRENT_LIST_DIR}/../../tests/queries/0_stateless" REALPATH)
     target_compile_definitions(ProtobufDelimitedMessagesSerializer PRIVATE OUTPUT_DIR="${ProtobufDelimitedMessagesSerializer_OutputDir}")
+
+    # Protoc generates substandard code.
+    check_cxx_compiler_flag("-Wsuggest-destructor-override" HAS_SUGGEST_DESTRUCTOR_OVERRIDE)
+    if (HAS_SUGGEST_OVERRIDE)
+        target_compile_options(ProtobufDelimitedMessagesSerializer PRIVATE -Wno-suggest-destructor-override)
+    endif()
 endif ()
diff --git a/utils/test-data-generator/MarkovModel.h b/utils/test-data-generator/MarkovModel.h
deleted file mode 100644
index 338aee2e61f..00000000000
--- a/utils/test-data-generator/MarkovModel.h
+++ /dev/null
@@ -1,188 +0,0 @@
-#pragma once
-
-#include <Core/Types.h>
-#include <Common/HashTable/HashMap.h>
-#include <Common/Arena.h>
-#include <ext/bit_cast.h>
-#include <common/StringRef.h>
-
-
-namespace DB
-{
-
-
-class MarkovModel
-{
-private:
-    using NGramHash = UInt32;
-
-    struct HistogramElement
-    {
-        UInt8 byte;
-        UInt32 count;
-    };
-
-    struct Histogram
-    {
-        UInt32 total = 0;
-        std::vector<HistogramElement> data;
-
-        void add(UInt8 byte)
-        {
-            ++total;
-
-            for (auto & elem : data)
-            {
-                if (elem.byte == byte)
-                {
-                    ++elem.count;
-                    return;
-                }
-            }
-
-            data.emplace_back(HistogramElement{.byte = byte, .count = 1});
-        }
-
-        UInt8 sample(UInt32 random) const
-        {
-            random %= total;
-
-            UInt32 sum = 0;
-            for (const auto & elem : data)
-            {
-                sum += elem.count;
-                if (sum > random)
-                    return elem.byte;
-            }
-
-            __builtin_unreachable();
-        }
-    };
-
-    using Table = HashMap<NGramHash, Histogram, TrivialHash>;
-    Table table;
-
-    size_t n;
-
-
-    NGramHash hashContext(const char * pos, const char * data, size_t size) const
-    {
-        if (pos >= data + n)
-            return CRC32Hash()(StringRef(pos - n, n));
-        else
-            return CRC32Hash()(StringRef(data, pos - data));
-    }
-
-public:
-    explicit MarkovModel(size_t n_) : n(n_) {}
-    MarkovModel() {}
-
-    void consume(const char * data, size_t size)
-    {
-        const char * pos = data;
-        const char * end = data + size;
-
-        while (pos < end)
-        {
-            table[hashContext(pos, data, size)].add(*pos);
-            ++pos;
-        }
-
-        /// Mark end of string as zero byte.
-        table[hashContext(pos, data, size)].add(0);
-    }
-
-
-    template <typename Random>
-    size_t generate(char * data, size_t size, Random && random) const
-    {
-        char * pos = data;
-        char * end = data + size;
-
-        while (pos < end)
-        {
-            auto it = table.find(hashContext(pos, data, size));
-            if (table.end() == it)
-                return pos - data;
-
-            *pos = it->getMapped().sample(random());
-
-            /// Zero byte marks end of string.
-            if (0 == *pos)
-                return pos - data;
-
-            ++pos;
-        }
-
-        return size;
-    }
-
-
-    /// Allows to add random noise to frequencies.
-    template <typename Transform>
-    void modifyCounts(Transform && transform)
-    {
-        for (auto & elem : table)
-        {
-            UInt32 new_total = 0;
-            for (auto & frequency : elem.getMapped().data)
-            {
-                frequency.count = transform(frequency.count);
-                new_total += frequency.count;
-            }
-            elem.getMapped().total = new_total;
-        }
-    }
-
-
-    void write(WriteBuffer & out) const
-    {
-        writeBinary(UInt8(n), out);
-        writeVarUInt(table.size(), out);
-
-        for (const auto & elem : table)
-        {
-            writeBinary(elem.getKey(), out);
-            writeBinary(UInt8(elem.getMapped().data.size()), out);
-
-            for (const auto & frequency : elem.getMapped().data)
-            {
-                writeBinary(frequency.byte, out);
-                writeVarUInt(frequency.count, out);
-            }
-        }
-    }
-
-
-    void read(ReadBuffer & in)
-    {
-        table.clear();
-
-        UInt8 read_n = 0;
-        readBinary(read_n, in);
-        n = read_n;
-
-        size_t read_size = 0;
-        readVarUInt(read_size, in);
-
-        for (size_t i = 0; i < read_size; ++i)
-        {
-            NGramHash key = 0;
-            UInt8 historgam_size = 0;
-            readBinary(key, in);
-            readBinary(historgam_size, in);
-
-            Histogram & histogram = table[key];
-            histogram.data.resize(historgam_size);
-
-            for (size_t j = 0; j < historgam_size; ++j)
-            {
-                readBinary(histogram.data[j].byte, in);
-                readVarUInt(histogram.data[j].count, in);
-                histogram.total += histogram.data[j].count;
-            }
-        }
-    }
-};
-
-}