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ClickHouse® is a real-time analytics DBMS
9689b293ca
Fix query cancelation in case of Distributed queries with LIMIT (when
the initator does not required to read all the data), since this cannot
be done until the query was sent (from the Query packet up to the empty
data Block), otherwise you will get:
2020.11.21 21:47:23.297161 [ 184 ] {} <Error> TCPHandler: Code: 101, e.displayText() = DB::Exception: Unexpected packet Data received from client, Stack trace:
0. /build/obj-x86_64-linux-gnu/../contrib/libcxx/include/exception:129: Poco::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) @ 0x244f5bc9 in /usr/bin/clickhouse
1. /build/obj-x86_64-linux-gnu/../src/Common/Exception.cpp:40: DB::Exception::Exception(std::__1::basic_string<char, std::__1::char_traits<char>, std::__1::allocator<char> > const&, int) @ 0xa14a421 in /usr/bin/clickhouse
2. /build/obj-x86_64-linux-gnu/../src/Common/NetException.h:0: DB::TCPHandler::receiveUnexpectedData() @ 0x1e032a74 in /usr/bin/clickhouse
3. /build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:824: DB::TCPHandler::receivePacket() @ 0x1e024685 in /usr/bin/clickhouse
4. /build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:178: DB::TCPHandler::runImpl() @ 0x1e01736b in /usr/bin/clickhouse
5. /build/obj-x86_64-linux-gnu/../src/Server/TCPHandler.cpp:0: DB::TCPHandler::run() @ 0x1e035c1b in /usr/bin/clickhouse
6. /build/obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerConnection.cpp:57: Poco::Net::TCPServerConnection::start() @ 0x243559cf in /usr/bin/clickhouse
7. /build/obj-x86_64-linux-gnu/../contrib/poco/Net/src/TCPServerDispatcher.cpp:0: Poco::Net::TCPServerDispatcher::run() @ 0x24356521 in /usr/bin/clickhouse
8. /build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/ThreadPool.cpp:0: Poco::PooledThread::run() @ 0x24609175 in /usr/bin/clickhouse
9. /build/obj-x86_64-linux-gnu/../contrib/poco/Foundation/src/Thread_POSIX.cpp:0: Poco::ThreadImpl::runnableEntry(void*) @ 0x24603cb7 in /usr/bin/clickhouse
10. start_thread @ 0x9669 in /usr/lib/x86_64-linux-gnu/libpthread-2.30.so
11. __clone @ 0x1222b3 in /usr/lib/x86_64-linux-gnu/libc-2.30.so
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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.
- Yandex.Messenger channel shares announcements and useful links in Russian.
- 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.
Upcoming Events
- The Second ClickHouse Meetup East (online) on October 31, 2020.
- ClickHouse for Enterprise Meetup (online in Russian) on November 10, 2020.