thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-12 10:34:21 +00:00
Code Issues Packages Projects Releases Wiki Activity
ClickHouse® is a real-time analytics DBMS
67,494 Commits 9,117 Branches 1,774 Tags 2 GiB
C++ 79.4%
Python 8.7%
Shell 4.3%
C 3.4%
Jinja 1.9%
Other 2%
5e120b8d37
Go to file
Azat Khuzhin 5e120b8d37 Fix stack-buffer-overflow in custom TLDs due to StringHashTable copy 8 bytes at a time 
ASan reports [1]:

    ==164==ERROR: AddressSanitizer: stack-buffer-overflow on address 0x7f0209dd4abf at pc 0x00000b75b7c5 bp 0x7f0209dd4760 sp 0x7f0209dd4758
    READ of size 8 at 0x7f0209dd4abf thread T4 (TCPHandler)
        0 0xb75b7c4 in auto StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::dispatch<StringHashTable<StringHashSetSubMaps<Allocator<true, true> > > const, StringRef const&, StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::FindCallable>(StringHashTable<StringHashSetSubMaps<Allocator<true, true> > > const&, StringRef const&, StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::FindCallable&&) obj-x86_64-linux-gnu/../src/Common/HashTable/StringHashTable.h:283:21
        1 0xb75b7c4 in StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::has(StringRef const&, unsigned long) const obj-x86_64-linux-gnu/../src/Common/HashTable/StringHashTable.h:365:16
        2 0xb75b7c4 in DB::TLDList::has(StringRef const&) const obj-x86_64-linux-gnu/../src/Common/TLDListsHolder.cpp:31:26
        3 0x1c4a6046 in void DB::ExtractFirstSignificantSubdomain<true>::executeCustom<DB::FirstSignificantSubdomainCustomLookup>(DB::FirstSignificantSubdomainCustomLookup const&, char const*, unsigned long, char const*&, unsigned long&, char const**) (/usr/bin/clickhouse+0x1c4a6046)
        4 0x1c4a3586 in DB::FunctionCutToFirstSignificantSubdomainCustomImpl<DB::CutToFirstSignificantSubdomainCustom<true>, DB::NameCutToFirstSignificantSubdomainCustom>::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x1c4a3586)
        5 0x10d96e34 in DB::IFunction::executeImplDryRun(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x10d96e34)
        6 0x10d9648b in DB::FunctionToExecutableFunctionAdaptor::executeDryRunImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x10d9648b)
        7 0x200ed79b in DB::IExecutableFunction::executeWithoutLowCardinalityColumns(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const obj-x86_64-linux-gnu/../src/Functions/IFunction.cpp:212:15
        8 0x200ee436 in DB::IExecutableFunction::execute(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long, bool) const obj-x86_64-linux-gnu/../src/Functions/IFunction.cpp:257:22
        9 0x20cd6f6f in DB::ActionsDAG::addFunction(std::__1::shared_ptr<DB::IFunctionOverloadResolver> const&, std::__1::vector<DB::ActionsDAG::Node const*, std::__1::allocator<DB::ActionsDAG::Node const*> >, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) obj-x86_64-linux-gnu/../src/Interpreters/ActionsDAG.cpp:214:37
        10 0x2124c8a7 in DB::ScopeStack::addFunction(std::__1::shared_ptr<DB::IFunctionOverloadResolver> const&, 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&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) obj-x86_64-linux-gnu/../src/Interpreters/ActionsVisitor.cpp:570:51
        11 0x2125c80d in DB::ActionsMatcher::Data::addFunction(std::__1::shared_ptr<DB::IFunctionOverloadResolver> const&, 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&, std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> >) obj-x86_64-linux-gnu/../src/Interpreters/ActionsVisitor.h:169:27
        12 0x2125c80d in DB::ActionsMatcher::visit(DB::ASTFunction const&, std::__1::shared_ptr<DB::IAST> const&, DB::ActionsMatcher::Data&) obj-x86_64-linux-gnu/../src/Interpreters/ActionsVisitor.cpp:1061:14
        13 0x212522fb in DB::ActionsMatcher::visit(DB::ASTFunction const&, std::__1::shared_ptr<DB::IAST> const&, DB::ActionsMatcher::Data&) obj-x86_64-linux-gnu/../src/Interpreters/ActionsVisitor.cpp:971:17
        14 0x2121354e in DB::InDepthNodeVisitor<DB::ActionsMatcher, true, std::__1::shared_ptr<DB::IAST> const>::visit(std::__1::shared_ptr<DB::IAST> const&) obj-x86_64-linux-gnu/../src/Interpreters/InDepthNodeVisitor.h:34:13
        15 0x211e17c7 in DB::ExpressionAnalyzer::getRootActions(std::__1::shared_ptr<DB::IAST> const&, bool, std::__1::shared_ptr<DB::ActionsDAG>&, bool) obj-x86_64-linux-gnu/../src/Interpreters/ExpressionAnalyzer.cpp:421:48
        16 0x21204024 in DB::ExpressionAnalyzer::getConstActions(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&) obj-x86_64-linux-gnu/../src/Interpreters/ExpressionAnalyzer.cpp:1423:5
        17 0x230f7216 in DB::KeyCondition::getBlockWithConstants(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::TreeRewriterResult const> const&, std::__1::shared_ptr<DB::Context const>) obj-x86_64-linux-gnu/../src/Storages/MergeTree/KeyCondition.cpp:385:103
        18 0x22877f9e in DB::(anonymous namespace)::replaceConstantExpressions(std::__1::shared_ptr<DB::IAST>&, std::__1::shared_ptr<DB::Context const>, DB::NamesAndTypesList const&, std::__1::shared_ptr<DB::IStorage const>, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&) obj-x86_64-linux-gnu/../src/Storages/StorageDistributed.cpp:280:34
        19 0x22877f9e in DB::StorageDistributed::skipUnusedShards(std::__1::shared_ptr<DB::Cluster>, std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&, std::__1::shared_ptr<DB::Context const>) const obj-x86_64-linux-gnu/../src/Storages/StorageDistributed.cpp:1091:5
        20 0x2285d215 in DB::StorageDistributed::getOptimizedCluster(std::__1::shared_ptr<DB::Context const>, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&, std::__1::shared_ptr<DB::IAST> const&) const obj-x86_64-linux-gnu/../src/Storages/StorageDistributed.cpp:1015:32
        21 0x2285a9c4 in DB::StorageDistributed::getQueryProcessingStage(std::__1::shared_ptr<DB::Context const>, DB::QueryProcessingStage::Enum, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&, DB::SelectQueryInfo&) const obj-x86_64-linux-gnu/../src/Storages/StorageDistributed.cpp:500:40
        22 0x2183a4b2 in DB::InterpreterSelectQuery::getSampleBlockImpl() obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:616:31
        23 0x21828db4 in DB::InterpreterSelectQuery::InterpreterSelectQuery(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context const>, std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::optional<DB::Pipe>, std::__1::shared_ptr<DB::IStorage> const&, DB::SelectQueryOptions const&, 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&, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&)::$_1::operator()(bool) const obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:506:25
        24 0x2181b652 in DB::InterpreterSelectQuery::InterpreterSelectQuery(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context const>, std::__1::shared_ptr<DB::IBlockInputStream> const&, std::__1::optional<DB::Pipe>, std::__1::shared_ptr<DB::IStorage> const&, DB::SelectQueryOptions const&, 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&, std::__1::shared_ptr<DB::StorageInMemoryMetadata const> const&) obj-x86_64-linux-gnu/../src/Interpreters/InterpreterSelectQuery.cpp:509:5
        25 0x21817cbe in DB::InterpreterSelectQuery::InterpreterSelectQuery(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context const>, DB::SelectQueryOptions const&, 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/../src/Interpreters/InterpreterSelectQuery.cpp:161:7
        26 0x21dd0eb5 in std::__1::__unique_if<DB::InterpreterSelectQuery>::__unique_single std::__1::make_unique<DB::InterpreterSelectQuery, std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context>&, DB::SelectQueryOptions&, 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&>(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context>&, DB::SelectQueryOptions&, 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/../contrib/libcxx/include/memory:2068:32
        27 0x21dd0eb5 in DB::InterpreterSelectWithUnionQuery::buildCurrentChildInterpreter(std::__1::shared_ptr<DB::IAST> const&, 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/../src/Interpreters/InterpreterSelectWithUnionQuery.cpp:212:16
        28 0x21dcd0e7 in DB::InterpreterSelectWithUnionQuery::InterpreterSelectWithUnionQuery(std::__1::shared_ptr<DB::IAST> const&, std::__1::shared_ptr<DB::Context const>, DB::SelectQueryOptions const&, 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/../src/Interpreters/InterpreterSelectWithUnionQuery.cpp:134:13
        29 0x211afe79 in std::__1::__unique_if<DB::InterpreterSelectWithUnionQuery>::__unique_single std::__1::make_unique<DB::InterpreterSelectWithUnionQuery, std::__1::shared_ptr<DB::IAST>&, std::__1::shared_ptr<DB::Context>&, DB::SelectQueryOptions const&>(std::__1::shared_ptr<DB::IAST>&, std::__1::shared_ptr<DB::Context>&, DB::SelectQueryOptions const&) obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:2068:32
        30 0x211afe79 in DB::InterpreterFactory::get(std::__1::shared_ptr<DB::IAST>&, std::__1::shared_ptr<DB::Context>, DB::SelectQueryOptions const&) obj-x86_64-linux-gnu/../src/Interpreters/InterpreterFactory.cpp:110:16
        31 0x22273f97 in DB::executeQueryImpl(char const*, char const*, std::__1::shared_ptr<DB::Context>, bool, DB::QueryProcessingStage::Enum, bool, DB::ReadBuffer*) obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:524:28
        32 0x22270ce2 in DB::executeQuery(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, std::__1::shared_ptr<DB::Context>, bool, DB::QueryProcessingStage::Enum, bool) obj-x86_64-linux-gnu/../src/Interpreters/executeQuery.cpp:913:30
        33 0x23905879 in DB::TCPHandler::runImpl() obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:312:24
        34 0x2392b81c in DB::TCPHandler::run() obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:1622:9
        35 0x2ab1fd8e in Poco::Net::TCPServerConnection::start() obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerConnection.cpp:43:3
        36 0x2ab20952 in Poco::Net::TCPServerDispatcher::run() obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerDispatcher.cpp:115:20
        37 0x2adfa3f4 in Poco::PooledThread::run() obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/ThreadPool.cpp:199:14
        38 0x2adf4716 in Poco::ThreadImpl::runnableEntry(void*) obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/Thread_POSIX.cpp:345:27
        39 0x7f02e66f2608 in start_thread (/lib/x86_64-linux-gnu/libpthread.so.0+0x9608)
        40 0x7f02e6619292 in clone (/lib/x86_64-linux-gnu/libc.so.6+0x122292)

    Address 0x7f0209dd4abf is located in stack of thread T4 (TCPHandler) at offset 447 in frame
        0 0x1c4a2c6f in DB::FunctionCutToFirstSignificantSubdomainCustomImpl<DB::CutToFirstSignificantSubdomainCustom<true>, DB::NameCutToFirstSignificantSubdomainCustom>::executeImpl(std::__1::vector<DB::ColumnWithTypeAndName, std::__1::allocator<DB::ColumnWithTypeAndName> > const&, std::__1::shared_ptr<DB::IDataType const> const&, unsigned long) const (/usr/bin/clickhouse+0x1c4a2c6f)

      This frame has 16 object(s):
        [32, 40) 'ref.tmp.i168'
        [64, 72) 'tmp_data.i.i'
        [96, 104) 'tmp_length.i.i'
        [128, 136) 'domain_end.i.i'
        [160, 216) 'ref.tmp.i132'
        [256, 312) 'ref.tmp.i'
        [352, 360) 'tld_lookup'
        [384, 408) 'ref.tmp'
        [448, 472) 'ref.tmp11' <== Memory access at offset 447 partially underflows this variable
        [512, 536) 'ref.tmp14'
        [576, 632) 'ref.tmp20'
        [672, 696) 'ref.tmp65'
        [736, 760) 'ref.tmp66'
        [800, 824) 'ref.tmp67'
        [864, 888) 'ref.tmp68'
        [928, 952) 'ref.tmp78'
    HINT: this may be a false positive if your program uses some custom stack unwind mechanism, swapcontext or vfork
          (longjmp and C++ exceptions *are* supported)
    Thread T4 (TCPHandler) created by T0 here:
        0 0xb51940a in pthread_create (/usr/bin/clickhouse+0xb51940a)
        1 0x2adf3a9f in Poco::ThreadImpl::startImpl(Poco::SharedPtr<Poco::Runnable, Poco::ReferenceCounter, Poco::ReleasePolicy<Poco::Runnable> >) obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/Thread_POSIX.cpp:202:6
        2 0x2adf699a in Poco::Thread::start(Poco::Runnable&) obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/Thread.cpp:128:2
        3 0x2adfa998 in Poco::PooledThread::start() obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/ThreadPool.cpp:85:10
        4 0x2adfa998 in Poco::ThreadPool::ThreadPool(int, int, int, int) obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/ThreadPool.cpp:252:12
        5 0xb582c25 in 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:915:22
        6 0x2ab511a5 in Poco::Util::Application::run() obj-x86_64-linux-gnu/../contrib/poco/Util/src/Application.cpp:334:8
        7 0xb56a89c in DB::Server::run() obj-x86_64-linux-gnu/../programs/server/Server.cpp:392:25
        8 0x2ab956f7 in Poco::Util::ServerApplication::run(int, char**) obj-x86_64-linux-gnu/../contrib/poco/Util/src/ServerApplication.cpp:611:9
        9 0xb566519 in mainEntryClickHouseServer(int, char**) obj-x86_64-linux-gnu/../programs/server/Server.cpp:171:20
        10 0xb56224a in main obj-x86_64-linux-gnu/../programs/main.cpp:366:12
        11 0x7f02e651e0b2 in __libc_start_main (/lib/x86_64-linux-gnu/libc.so.6+0x270b2)

    SUMMARY: AddressSanitizer: stack-buffer-overflow obj-x86_64-linux-gnu/../src/Common/HashTable/StringHashTable.h:283:21 in auto StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::dispatch<StringHashTable<StringHashSetSubMaps<Allocator<true, true> > > const, StringRef const&, StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::FindCallable>(StringHashTable<StringHashSetSubMaps<Allocator<true, true> > > const&, StringRef const&, StringHashTable<StringHashSetSubMaps<Allocator<true, true> > >::FindCallable&&)
    Shadow bytes around the buggy address:
      0x0fe0c13b2900: 00 00 f3 f3 00 00 00 00 00 00 00 00 00 00 00 00
      0x0fe0c13b2910: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
      0x0fe0c13b2920: f1 f1 f1 f1 f8 f2 f2 f2 00 f2 f2 f2 00 f2 f2 f2
      0x0fe0c13b2930: 00 f2 f2 f2 f8 f8 f8 f8 f8 f8 f8 f2 f2 f2 f2 f2
      0x0fe0c13b2940: f8 f8 f8 f8 f8 f8 f8 f2 f2 f2 f2 f2 00 f2 f2 f2
    =>0x0fe0c13b2950: f8 f8 f8 f2 f2 f2 f2[f2]00 00 00 f2 f2 f2 f2 f2
      0x0fe0c13b2960: 00 00 00 f2 f2 f2 f2 f2 f8 f8 f8 f8 f8 f8 f8 f2
      0x0fe0c13b2970: f2 f2 f2 f2 f8 f8 f8 f2 f2 f2 f2 f2 f8 f8 f8 f2
      0x0fe0c13b2980: f2 f2 f2 f2 f8 f8 f8 f2 f2 f2 f2 f2 f8 f8 f8 f2
      0x0fe0c13b2990: f2 f2 f2 f2 f8 f8 f8 f3 f3 f3 f3 f3 00 00 00 00
      0x0fe0c13b29a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
    Shadow byte legend (one shadow byte represents 8 application bytes):
      Addressable:           00
      Partially addressable: 01 02 03 04 05 06 07
      Heap left redzone:       fa
      Freed heap region:       fd
      Stack left redzone:      f1
      Stack mid redzone:       f2
      Stack right redzone:     f3
      Stack after return:      f5
      Stack use after scope:   f8
      Global redzone:          f9
      Global init order:       f6
      Poisoned by user:        f7
      Container overflow:      fc
      Array cookie:            ac
      Intra object redzone:    bb
      ASan internal:           fe
      Left alloca redzone:     ca
      Right alloca redzone:    cb
      Shadow gap:              cc
    ==164==ABORTING

  [1]: https://clickhouse-test-reports.s3.yandex.net/26041/42a844546229e56c51a3ec986467ced52e4ed972/functional_stateless_tests_flaky_check_(address)/stderr.log

v2: Replace String with string_view in custom TLD for scalar
v3: use ColumnString::getDataAt()
2021-07-07 10:38:45 +03:00
.github Update 40_bug-report.md 2021-05-31 17:06:28 +03:00
base Merge pull request #24789 from kitaisreal/compile-aggregation-functions 2021-07-05 02:57:49 +03:00
benchmark Convert to python3 (#15007) 2020-10-02 19:54:07 +03:00
cmake Add comments for VERSION_REVISION vs DBMS_TCP_PROTOCOL_VERSION 2021-06-28 22:01:14 +03:00
contrib Merge pull request #25970 from kitaisreal/libunwind-lock-free-stack-fix 2021-07-04 22:05:54 +03:00
debian Merge pull request #25921 from ClickHouse/a-fix-for-systemd 2021-07-03 14:50:05 +03:00
docker Compile aggregate functions perf tests fix 2021-07-05 12:17:01 +03:00
docs Merge pull request #25799 from lehasm/alexey-sm-DOCSUP-9779-document-quantileBFloat16 2021-07-06 11:43:06 +03:00
programs Merge pull request #24789 from kitaisreal/compile-aggregation-functions 2021-07-05 02:57:49 +03:00
src Fix stack-buffer-overflow in custom TLDs due to StringHashTable copy 8 bytes at a time 2021-07-07 10:38:45 +03:00
tests Fix constness of custom TLDs 2021-07-07 01:27:31 +03:00
utils Update version_date.tsv after release 21.3.14.1 2021-07-04 16:51:51 +03:00
website Update community.html 2021-07-01 21:20:19 +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 Add *.log/*.stderr/*.stdout into gitignore 2021-06-08 09:14:47 +03:00
.gitmodules Remove experimental ANTLR parser 2021-07-03 18:48:03 +03:00
.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 2021-06-19 13:32:18 +03:00
CMakeLists.txt Fix locating objcopy in macOS 2021-06-26 17:39:02 +04:00
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 README.md 2021-07-05 19:26:02 +03:00
release Remove rotten parts of release script 2021-04-25 02:11:31 +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.