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11 Commits

Author SHA1 Message Date
Azat Khuzhin
9b9e0a9bbc Block all memory tracking limits in destructors 2021-04-14 23:38:42 +03:00
Azat Khuzhin
f1907acbcd Use finalize() over next() for nested writers 
Refs: https://github.com/ClickHouse/ClickHouse/pull/21325#discussion_r585348309
 2021-03-25 23:42:58 +03:00
Azat Khuzhin
eb0387c5a9 Fix abnormal server termination for nested writers 
Writers with nested writer can call next() from the dtor for nested
writer and this will cause exception again, so the buffer position
should be updated on exceptions.

Found by stress test (thread) here [1] and here [2]:

    2021.02.27 19:27:53.498977 [ 302 ] {} <Fatal> BaseDaemon: (version 21.3.1.6130, build id: 2DAEC5DEBF03C5A1C3BF66B7779C886F16239345) (from thread 1614) Terminate called for uncaught exception:
    Code: 24, e.displayText() = DB::Exception: Cannot write to ostream at offset 2097498, Stack trace (when copying this message, always include the lines below):

    0. ./obj-x86_64-linux-gnu/../contrib/libcxx/include/exception:0: Poco::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) @ 0x15bef2ab in /usr/bin/clickhouse
    1. ./obj-x86_64-linux-gnu/../src/Common/Exception.cpp:56: DB::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, bool) @ 0x8aea92e in /usr/bin/clickhouse
    2. ./obj-x86_64-linux-gnu/../src/IO/WriteBufferFromOStream.cpp:0: DB::WriteBufferFromOStream::nextImpl() @ 0x8bbbc45 in /usr/bin/clickhouse
    3. ./obj-x86_64-linux-gnu/../src/IO/BufferBase.h:39: DB::WriteBufferFromOStream::~WriteBufferFromOStream() @ 0x8bbc077 in /usr/bin/clickhouse
    4. ./obj-x86_64-linux-gnu/../src/IO/WriteBufferFromOStream.cpp:44: DB::WriteBufferFromOStream::~WriteBufferFromOStream() @ 0x8bbc18a in /usr/bin/clickhouse
    5. ./obj-x86_64-linux-gnu/../src/IO/BufferWithOwnMemory.h:137: DB::ZstdDeflatingWriteBuffer::~ZstdDeflatingWriteBuffer() @ 0x118bdc29 in /usr/bin/clickhouse
    6. ./obj-x86_64-linux-gnu/../src/IO/ZstdDeflatingWriteBuffer.cpp:32: DB::ZstdDeflatingWriteBuffer::~ZstdDeflatingWriteBuffer() @ 0x118be3ea in /usr/bin/clickhouse
    7. ./obj-x86_64-linux-gnu/../contrib/libcxx/include/memory:0: DB::WriteBufferFromHTTPServerResponse::finalize() @ 0x12f1dceb in /usr/bin/clickhouse
    8. ./obj-x86_64-linux-gnu/../src/Server/HTTPHandler.cpp:703: DB::HTTPHandler::trySendExceptionToClient(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int, DB::HTTPServerRequest&, DB::HTTPServerResponse&, DB::HTTPHandler::Output&) @ 0x12e9fecc in /usr/bin/clickhouse
    9. ./obj-x86_64-linux-gnu/../contrib/libcxx/include/string:1444: DB::HTTPHandler::handleRequest(DB::HTTPServerRequest&, DB::HTTPServerResponse&) @ 0x12ea0d60 in /usr/bin/clickhouse
    10. ./obj-x86_64-linux-gnu/../src/Server/HTTP/HTTPServerConnection.cpp:0: DB::HTTPServerConnection::run() @ 0x12f16db1 in /usr/bin/clickhouse
    11. ./obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerConnection.cpp:57: Poco::Net::TCPServerConnection::start() @ 0x15b184f3 in /usr/bin/clickhouse
    12. ./obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerDispatcher.cpp:0: Poco::Net::TCPServerDispatcher::run() @ 0x15b18c1f in /usr/bin/clickhouse
    13. ./obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/ScopedLock.h:36: Poco::PooledThread::run() @ 0x15c7fdb2 in /usr/bin/clickhouse
    14. ./obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/Thread.cpp:56: Poco::(anonymous namespace)::RunnableHolder::run() @ 0x15c7e350 in /usr/bin/clickhouse
    15. ./obj-x86_64-linux-gnu/../contrib/poco/Foundation/include/Poco/SharedPtr.h:277: Poco::ThreadImpl::runnableEntry(void*) @ 0x15c7cb58 in /usr/bin/clickhouse
    16. __tsan_thread_start_func @ 0x8a04ced in /usr/bin/clickhouse
    17. start_thread @ 0x9609 in /usr/lib/x86_64-linux-gnu/libpthread-2.31.so
    18. __clone @ 0x122293 in /usr/lib/x86_64-linux-gnu/libc-2.31.so
     (version 21.3.1.6130)

  [1]: https://clickhouse-test-reports.s3.yandex.net/21279/4f61ef3099f42f17b496a0b0424773978d9a32dc/stress_test_(thread).html#fail1
  [2]: https://clickhouse-test-reports.s3.yandex.net/21292/ae9fea1d0af118a8f87b224d194d61da1567188b/stress_test_(thread).html#fail1

v2: https://clickhouse-test-reports.s3.yandex.net/21305/e969daa6e86c5e09cfef08cfde19712982b64e59/stress_test_(thread).html#fail1
 2021-02-28 15:13:42 +03:00
Azat Khuzhin
98e3a99a88 Do not catch exceptions during final flush in writers destructors 
Since this hides real problems, since destructor does final flush and if
it fails, then data will be lost.

One of such examples if MEMORY_LIMIT_EXCEEDED exception, so lock
exceptions from destructors, by using
MemoryTracker::LockExceptionInThread to block these exception, and allow
others (so std::terminate will be called, since this is c++11 with
noexcept for destructors by default).

Here is an example, that leads to empty block in the distributed batch:

    2021.01.21 12:43:18.619739 [ 46468 ] {7bd60d75-ebcb-45d2-874d-260df9a4ddac} <Error> virtual DB::CompressedWriteBuffer::~CompressedWriteBuffer(): Code: 241, e.displayText() = DB::Exception: Memory limit (for user) exceeded: would use 332.07 GiB (attempt to allocate chunk of 4355342 bytes), maximum: 256.00 GiB, Stack trace (when copying this message, always include the lines below):

    0. DB::Exception::Exception<>() @ 0x86f7b88 in /usr/bin/clickhouse
    ...
    4. void DB::PODArrayBase<>::resize<>(unsigned long) @ 0xe9e878d in /usr/bin/clickhouse
    5. DB::CompressedWriteBuffer::nextImpl() @ 0xe9f0296 in /usr/bin/clickhouse
    6. DB::CompressedWriteBuffer::~CompressedWriteBuffer() @ 0xe9f0415 in /usr/bin/clickhouse
    7. DB::DistributedBlockOutputStream::writeToShard() @ 0xf6bed4a in /usr/bin/clickhouse
 2021-02-05 01:31:45 +03:00
a.palagashvili
9c5640f443 merged 2020-11-29 15:19:19 +03:00
a.palagashvili
7a20fad305 added errors checking, removed redundant variables 2020-11-29 15:17:19 +03:00
a.palagashvili
7b886252ac added errors checking, removed redundant variables 2020-11-29 15:08:28 +03:00
alexey-milovidov
203db68250
Update ZstdDeflatingWriteBuffer.cpp 2020-11-23 07:14:41 +03:00
a.palagashvili
22f147ab0f added newline, fixed initialization in constructor 2020-11-17 23:14:22 +03:00
a.palagashvili
b737a5ea9f added newlines, fixed formatting 2020-11-17 21:36:18 +03:00
a.palagashvili
6f5390cc70 introduce zstd compression 2020-11-17 19:02:10 +03:00