thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-24 08:32:02 +00:00
Code Issues Packages Projects Releases Wiki Activity
ClickHouse® is a real-time analytics DBMS
61,681 Commits 9,168 Branches 1,781 Tags 2.1 GiB
C++ 79.3%
Python 8.8%
Shell 4.3%
C 3.4%
Jinja 1.8%
Other 2.1%
a61ae26729
Go to file
Azat Khuzhin a61ae26729 Fix lock-order-inversion during system.*_log shutting down 
As TSan reports [1]:

WARNING: ThreadSanitizer: lock-order-inversion (potential deadlock) (pid=24429)
  Cycle in lock order graph: M152695175523663992 (0x000000000000) => M2505 (0x7b9000002008) => M152695175523663992

  Mutex M2505 acquired here while holding mutex M152695175523663992 in thread T7:
    0 pthread_mutex_lock <null> (clickhouse-tsan+0x8a301b6)
    1 std::__1::__libcpp_recursive_mutex_lock(pthread_mutex_t*) obj-x86_64-linux-gnu/../contrib/libcxx/include/__threading_support:385:10 (clickhouse-tsan+0x17cd6e89)
    2 std::__1::recursive_mutex::lock() obj-x86_64-linux-gnu/../contrib/libcxx/src/mutex.cpp:71:14 (clickhouse-tsan+0x17cd6e89)
    3 std::__1::unique_lock<std::__1::recursive_mutex>::unique_lock(std::__1::recursive_mutex&) obj-x86_64-linux-gnu/../contrib/libcxx/include/__mutex_base:119:61 (clickhouse-tsan+0x11e32a9f)
    4 DB::Context::getLock() const obj-x86_64-linux-gnu/../src/Interpreters/Context.cpp:517:12 (clickhouse-tsan+0x11e32a9f)
    5 DB::Context::getSchedulePool() const obj-x86_64-linux-gnu/../src/Interpreters/Context.cpp:1517:17 (clickhouse-tsan+0x11e32a9f)
    6 DB::IBackgroundJobExecutor::start() obj-x86_64-linux-gnu/../src/Storages/MergeTree/BackgroundJobsExecutor.cpp:158:42 (clickhouse-tsan+0x12bde50a)
    7 DB::StorageMergeTree::startup() obj-x86_64-linux-gnu/../src/Storages/StorageMergeTree.cpp:112:29 (clickhouse-tsan+0x129e9e1e)
    8 DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_2::operator()(std::__1::shared_ptr<DB::IStorage> const&) const obj-x86_64-linux-gnu/../src/Databases/DatabaseOrdinary.cpp:230:16 (clickhouse-tsan+0x11d6fa2a)
    9 DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3::operator()() const obj-x86_64-linux-gnu/../src/Databases/DatabaseOrdinary.cpp:238:56 (clickhouse-tsan+0x11d6fa2a)
    10 decltype(std::__1::forward<DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3&>(fp)()) std::__1::__invoke<DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3&>(DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3&) obj-x86_64-linux-gnu/../contrib/libcxx/include/type_traits:3676:1 (clickhouse-tsan+0x11d6fa2a)
    11 void std::__1::__invoke_void_return_wrapper<void>::__call<DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3&>(DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3&) obj-x86_64-linux-gnu/../contrib/libcxx/include/__functional_base:348:9 (clickhouse-tsan+0x11d6fa2a)
    12 std::__1::__function::__default_alloc_func<DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3, void ()>::operator()() obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:1608:12 (clickhouse-tsan+0x11d6fa2a)
    13 void std::__1::__function::__policy_invoker<void ()>::__call_impl<std::__1::__function::__default_alloc_func<DB::DatabaseOrdinary::startupTables(ThreadPoolImpl<ThreadFromGlobalPool>&)::$_3, void ()> >(std::__1::__function::__policy_storage const*) obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2089:16 (clickhouse-tsan+0x11d6fa2a)
    14 std::__1::__function::__policy_func<void ()>::operator()() const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2221:16 (clickhouse-tsan+0x8b39350)
    15 std::__1::function<void ()>::operator()() const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2560:12 (clickhouse-tsan+0x8b39350)
    16 ThreadPoolImpl<ThreadFromGlobalPool>::worker(std::__1::__list_iterator<ThreadFromGlobalPool, void*>) obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:247:17 (clickhouse-tsan+0x8b39350)
    17 void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()::operator()() const obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:124:73 (clickhouse-tsan+0x8b3c070)
    18 decltype(std::__1::forward<void>(fp)(std::__1::forward<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&>(fp0)...)) std::__1::__invoke_constexpr<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&...) obj-x86_64-linux-gnu/../contrib/libcxx/include/type_traits:3682:1 (clickhouse-tsan+0x8b3c070)
    19 decltype(auto) std::__1::__apply_tuple_impl<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&, std::__1::tuple<>&>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&, std::__1::__tuple_indices<std::__1::tuple<>&...>) obj-x86_64-linux-gnu/../contrib/libcxx/include/tuple:1415:1 (clickhouse-tsan+0x8b3c070)
    20 decltype(auto) std::__1::apply<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&, std::__1::tuple<>&>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&) obj-x86_64-linux-gnu/../contrib/libcxx/include/tuple:1424:1 (clickhouse-tsan+0x8b3c070)
    21 ThreadFromGlobalPool::ThreadFromGlobalPool<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...)::'lambda'()::operator()() obj-x86_64-linux-gnu/../src/Common/ThreadPool.h:178:13 (clickhouse-tsan+0x8b3c070)
    22 decltype(std::__1::forward<void>(fp)(std::__1::forward<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(fp0)...)) std::__1::__invoke<ThreadFromGlobalPool::ThreadFromGlobalPool<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...)::'lambda'()&>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...) obj-x86_64-linux-gnu/../contrib/libcxx/include/type_traits:3676:1 (clickhouse-tsan+0x8b3bfd1)
    23 void std::__1::__invoke_void_return_wrapper<void>::__call<ThreadFromGlobalPool::ThreadFromGlobalPool<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...)::'lambda'()&>(void&&...) obj-x86_64-linux-gnu/../contrib/libcxx/include/__functional_base:348:9 (clickhouse-tsan+0x8b3bfd1)
    24 std::__1::__function::__default_alloc_func<ThreadFromGlobalPool::ThreadFromGlobalPool<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...)::'lambda'(), void ()>::operator()() obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:1608:12 (clickhouse-tsan+0x8b3bfd1)
    25 void std::__1::__function::__policy_invoker<void ()>::__call_impl<std::__1::__function::__default_alloc_func<ThreadFromGlobalPool::ThreadFromGlobalPool<void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...)::'lambda'(), void ()> >(std::__1::__function::__policy_storage const*) obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2089:16 (clickhouse-tsan+0x8b3bfd1)
    26 std::__1::__function::__policy_func<void ()>::operator()() const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2221:16 (clickhouse-tsan+0x8b36c75)
    27 std::__1::function<void ()>::operator()() const obj-x86_64-linux-gnu/../contrib/libcxx/include/functional:2560:12 (clickhouse-tsan+0x8b36c75)
    28 ThreadPoolImpl<std::__1::thread>::worker(std::__1::__list_iterator<std::__1::thread, void*>) obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:247:17 (clickhouse-tsan+0x8b36c75)
    29 void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()::operator()() const obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:124:73 (clickhouse-tsan+0x8b3a918)
    30 decltype(std::__1::forward<void>(fp)(std::__1::forward<void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(fp0)...)) std::__1::__invoke<void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(void&&, void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()&&...) obj-x86_64-linux-gnu/../contrib/libcxx/include/type_traits:3676:1 (clickhouse-tsan+0x8b3a918)
    31 void std::__1::__thread_execute<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>(std::__1::tuple<void, void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()>&, std::__1::__tuple_indices<>) obj-x86_64-linux-gnu/../contrib/libcxx/include/thread:280:5 (clickhouse-tsan+0x8b3a918)
    32 void* std::__1::__thread_proxy<std::__1::tuple<std::__1::unique_ptr<std::__1::__thread_struct, std::__1::default_delete<std::__1::__thread_struct> >, void ThreadPoolImpl<std::__1::thread>::scheduleImpl<void>(std::__1::function<void ()>, int, std::__1::optional<unsigned long>)::'lambda1'()> >(void*) obj-x86_64-linux-gnu/../contrib/libcxx/include/thread:291:5 (clickhouse-tsan+0x8b3a918)

    Hint: use TSAN_OPTIONS=second_deadlock_stack=1 to get more informative warning message

  Mutex M152695175523663992 acquired here while holding mutex M2505 in main thread:
    0 pthread_mutex_lock <null> (clickhouse-tsan+0x8a301b6)
    1 std::__1::__libcpp_mutex_lock(pthread_mutex_t*) obj-x86_64-linux-gnu/../contrib/libcxx/include/__threading_support:405:10 (clickhouse-tsan+0x17cd6cf9)
    2 std::__1::mutex::lock() obj-x86_64-linux-gnu/../contrib/libcxx/src/mutex.cpp:33:14 (clickhouse-tsan+0x17cd6cf9)
    3 std::__1::lock_guard<std::__1::mutex>::lock_guard(std::__1::mutex&) obj-x86_64-linux-gnu/../contrib/libcxx/include/__mutex_base:91:27 (clickhouse-tsan+0x12bdee4b)
    4 DB::IBackgroundJobExecutor::finish() obj-x86_64-linux-gnu/../src/Storages/MergeTree/BackgroundJobsExecutor.cpp:167:21 (clickhouse-tsan+0x12bdee4b)
    5 DB::IBackgroundJobExecutor::~IBackgroundJobExecutor() obj-x86_64-linux-gnu/../src/Storages/MergeTree/BackgroundJobsExecutor.cpp:185:5 (clickhouse-tsan+0x12bdee4b)
    6 DB::StorageMergeTree::~StorageMergeTree() obj-x86_64-linux-gnu/../src/Storages/StorageMergeTree.cpp:174:1 (clickhouse-tsan+0x129ea118)
    7 std::__1::default_delete<DB::StorageMergeTree>::operator()(DB::StorageMergeTree*) const obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:1397:5 (clickhouse-tsan+0x12e4433b)
    8 std::__1::__shared_ptr_pointer<DB::StorageMergeTree*, std::__1::shared_ptr<DB::StorageMergeTree>::__shared_ptr_default_delete<DB::StorageMergeTree, DB::StorageMergeTree>, std::__1::allocator<DB::StorageMergeTree> >::__on_zero_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2565:5 (clickhouse-tsan+0x12e4433b)
    9 std::__1::__shared_count::__release_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2475:9 (clickhouse-tsan+0x125b355a)
    10 std::__1::__shared_weak_count::__release_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2517:27 (clickhouse-tsan+0x125b355a)
    11 std::__1::shared_ptr<DB::IStorage>::~shared_ptr() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:3212:19 (clickhouse-tsan+0x125b355a)
    12 DB::SystemLog<DB::AsynchronousMetricLogElement>::~SystemLog() obj-x86_64-linux-gnu/../src/Interpreters/SystemLog.h:118:7 (clickhouse-tsan+0x125b355a)
    13 std::__1::allocator<DB::AsynchronousMetricLog>::destroy(DB::AsynchronousMetricLog*) obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:891:15 (clickhouse-tsan+0x125aff68)
    14 void std::__1::allocator_traits<std::__1::allocator<DB::AsynchronousMetricLog> >::__destroy<DB::AsynchronousMetricLog>(std::__1::integral_constant<bool, true>, std::__1::allocator<DB::AsynchronousMetricLog>&, DB::AsynchronousMetricLog*) obj-x86_64-linux-gnu/../contrib/libcxx/include/__memory/allocator_traits.h:539:21 (clickhouse-tsan+0x125aff68)
    15 void std::__1::allocator_traits<std::__1::allocator<DB::AsynchronousMetricLog> >::destroy<DB::AsynchronousMetricLog>(std::__1::allocator<DB::AsynchronousMetricLog>&, DB::AsynchronousMetricLog*) obj-x86_64-linux-gnu/../contrib/libcxx/include/__memory/allocator_traits.h:487:14 (clickhouse-tsan+0x125aff68)
    16 std::__1::__shared_ptr_emplace<DB::AsynchronousMetricLog, std::__1::allocator<DB::AsynchronousMetricLog> >::__on_zero_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2611:9 (clickhouse-tsan+0x125aff68)
    17 std::__1::__shared_count::__release_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2475:9 (clickhouse-tsan+0x1258e74f)
    18 std::__1::__shared_weak_count::__release_shared() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2517:27 (clickhouse-tsan+0x1258e74f)
    19 std::__1::shared_ptr<DB::AsynchronousMetricLog>::~shared_ptr() obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:3212:19 (clickhouse-tsan+0x1258e74f)
    20 DB::SystemLogs::~SystemLogs() obj-x86_64-linux-gnu/../src/Interpreters/SystemLog.cpp:155:1 (clickhouse-tsan+0x1258e74f)
    21 std::__1::__optional_destruct_base<DB::SystemLogs, false>::reset() obj-x86_64-linux-gnu/../contrib/libcxx/include/optional:245:21 (clickhouse-tsan+0x11e41085)
    22 DB::ContextShared::shutdown() obj-x86_64-linux-gnu/../src/Interpreters/Context.cpp:443:21 (clickhouse-tsan+0x11e41085)
    23 DB::Context::shutdown() obj-x86_64-linux-gnu/../src/Interpreters/Context.cpp:2251:13 (clickhouse-tsan+0x11e39867)
    24 DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)::$_5::operator()() const obj-x86_64-linux-gnu/../programs/server/Server.cpp:892:5 (clickhouse-tsan+0x8ab8732)
    25 ext::basic_scope_guard<DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)::$_5>::invoke() obj-x86_64-linux-gnu/../base/common/../ext/scope_guard.h:97:9 (clickhouse-tsan+0x8ab8732)
    26 ext::basic_scope_guard<DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&)::$_5>::~basic_scope_guard() obj-x86_64-linux-gnu/../base/common/../ext/scope_guard.h:47:28 (clickhouse-tsan+0x8ab8732)
    27 DB::Server::main(std::__1::vector<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >, std::__1::allocator<std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > > > const&) obj-x86_64-linux-gnu/../programs/server/Server.cpp:1395:1 (clickhouse-tsan+0x8ab3839)
    28 Poco::Util::Application::run() obj-x86_64-linux-gnu/../contrib/poco/Util/src/Application.cpp:334:8 (clickhouse-tsan+0x15b464ab)
    29 DB::Server::run() obj-x86_64-linux-gnu/../programs/server/Server.cpp:342:25 (clickhouse-tsan+0x8aa71be)
    30 Poco::Util::ServerApplication::run(int, char**) obj-x86_64-linux-gnu/../contrib/poco/Util/src/ServerApplication.cpp:611:9 (clickhouse-tsan+0x15b628c3)
    31 mainEntryClickHouseServer(int, char**) obj-x86_64-linux-gnu/../programs/server/Server.cpp:134:20 (clickhouse-tsan+0x8aa5d8e)
    32 main obj-x86_64-linux-gnu/../programs/main.cpp:368:12 (clickhouse-tsan+0x8aa42f9)

  [1]: https://clickhouse-test-reports.s3.yandex.net/21318/38be9ff43ac4c46ce6e803fc125d910bde1d4c71/functional_stateful_tests_(thread).html#fail1
2021-04-13 21:37:38 +03:00
.github Drop truthy.check-keys from yamllint (does not supported on CI) 2021-02-21 06:15:36 +03:00
base Replace all Context references with std::weak_ptr (#22297) 2021-04-11 02:33:54 +03:00
benchmark Convert to python3 (#15007) 2020-10-02 19:54:07 +03:00
cmake Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into nanodbc 2021-04-11 21:36:08 +00:00
contrib Merge pull request #22992 from ClickHouse/ssl_keeper 2021-04-13 19:15:07 +03:00
debian Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into library-bridge 2021-04-05 13:14:51 +00:00
docker Adjust fast test 2021-04-12 13:43:33 +03:00
docs Merge pull request #22995 from MichaelMonashev/patch-6 2021-04-13 15:09:06 +03:00
programs Fix SIGSEGV by waiting servers thread pool 2021-04-13 21:37:38 +03:00
src Fix lock-order-inversion during system.*_log shutting down 2021-04-13 21:37:38 +03:00
tests Merge pull request #22992 from ClickHouse/ssl_keeper 2021-04-13 19:15:07 +03:00
utils Update version_date.tsv after release 21.1.9.41 2021-04-13 14:29:13 +03:00
website Better benchmark 2021-04-11 17:00:14 +03:00
.arcignore Added .arcignore 2020-05-21 09:17:03 +03:00
.clang-format Fixed wrong code around Memory Profiler 2020-03-03 03:24:44 +03:00
.clang-tidy Enable clang-tidy for programs and utils 2020-05-18 04:19:50 +03:00
.editorconfig Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.gitattributes Union merge for arcadia_skip_list.txt to avoid frequent conflicts 2021-03-10 08:50:32 +03:00
.gitignore ignore data store files 2021-02-17 12:58:17 +08:00
.gitmodules Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into nanodbc 2021-04-11 21:36:08 +00:00
.potato.yml Fix yamllint issues 2021-02-20 23:25:21 +03:00
.pylintrc Add pylintrc config 2021-01-26 23:35:56 +03:00
.vimrc Changed tabs to spaces in editor configs and in style guide [#CLICKHOUSE-3]. 2017-04-01 11:35:09 +03:00
.yamllint Drop truthy.check-keys from yamllint (does not supported on CI) 2021-02-21 06:15:36 +03:00
AUTHORS Update AUTHORS 2020-01-23 17:36:05 +03:00
CHANGELOG.md Update CHANGELOG.md 2021-04-13 15:16:08 +03:00
CMakeLists.txt Merge branch 'master' of https://github.com/ClickHouse/ClickHouse into nanodbc 2021-04-09 11:13:01 +00:00
CODE_OF_CONDUCT.md Add minimal code of conduct #9676 2020-03-16 12:44:28 +03:00
CONTRIBUTING.md Update CONTRIBUTING.md 2020-01-27 21:03:30 +03:00
docker-compose.yml Updated docker-compose.yml #1025 2017-07-26 20:05:32 +03:00
format_sources allow several <graphite> targets (#603) 2017-03-21 23:08:09 +04:00
LICENSE Update LICENSE 2021-01-25 17:00:13 +03:00
PreLoad.cmake Check if XCODE_IDE is true and avoid enforcing ninja in that case 2021-01-06 03:06:03 +04:00
README.md Update link 2021-03-22 18:29:19 +03:00
release Convert to python3 (#15007) 2020-10-02 19:54:07 +03:00
SECURITY.md Update SECURITY.md (outdated long time ago) 2021-01-21 16:48:28 +03:00
uncrustify.cfg Better .clang-format and uncrustify.cfg 2018-11-29 15:45:34 +03:00
ya.make Changes required for auto-sync with Arcadia 2020-04-16 15:31:57 +03:00

README.md

ClickHouse — open source distributed column-oriented DBMS

ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real time.

Useful Links

  • Official website has quick high-level overview of ClickHouse on main page.
  • Tutorial shows how to set up and query small ClickHouse cluster.
  • Documentation provides more in-depth information.
  • YouTube channel has a lot of content about ClickHouse in video format.
  • Slack and Telegram allow to chat with ClickHouse users in real-time.
  • Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
  • Code Browser with syntax highlight and navigation.
  • Contacts can help to get your questions answered if there are any.
  • You can also fill this form to meet Yandex ClickHouse team in person.