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Alexey Milovidov
b224d844fc
Change the generated `DockerC` runtime command from `docker exec -i` to a per-function runner script that creates FIFO files inside the UDF work directory. The script starts `/work/user_func` in the persistent Docker container with its `stdin` and `stdout` redirected to those FIFOs, and then relays ClickHouse input and output through host-side `cat` processes. This keeps the hot data path out of Docker's `exec -i` attach stream while leaving all temporary files inside the UDF work directory. Also stop requesting `command_pipe_capacity` by default from generated C-body driver configs, so this experiment is not mixed with the previous pipe-capacity tuning. PR: https://github.com/ClickHouse/ClickHouse/pull/105131 Tests: - `python3 -m py_compile programs/server/user_defined_executable_function_drivers/c_driver_common.py` - `CLICKHOUSE_C_DRIVER_COMPILE_LOCAL=1 CLICKHOUSE_C_DRIVER_SKIP_DOCKER_CONTAINER=1 docker_c_create.sh --return UInt64 --args 'x UInt64, y UInt64'` - `sh -n tmp/pr105131_docker_fifo/create/docker_fifo_runner.sh` - `CLICKHOUSE_BINARY=./build/programs/clickhouse tests/queries/0_stateless/04241_executable_udf_driver.sh` - `CLICKHOUSE_BINARY=./build/programs/clickhouse tests/queries/0_stateless/04242_executable_udf_driver_errors.sh`
ClickHouse® is an open-source column-oriented database management system that allows generating analytical data reports in real-time.
How To Install (Linux, macOS, FreeBSD)
curl https://clickhouse.com/ | sh
Useful Links
- Official website has a quick high-level overview of ClickHouse on the main page.
- ClickHouse Cloud ClickHouse as a service, built by the creators and maintainers.
- Tutorial shows how to set up and query a small ClickHouse cluster.
- Documentation provides more in-depth information.
- YouTube channel has a lot of content about ClickHouse in video format.
- ClickHouse Theater contains presentations and videos about ClickHouse.
- Slack and Telegram allow chatting with ClickHouse users in real-time.
- Blog contains various ClickHouse-related articles, as well as announcements and reports about events.
- Bluesky and X for short news.
- Code Browser (github.dev) with syntax highlighting, powered by github.dev.
- Contacts can help to get your questions answered if there are any.
Monthly Release & Community Call
Join us for the ClickHouse 26.2 Release Call on February 26, 2026.
Watch all release presentations and videos at ClickHouse Theater and YouTube Playlist.
Upcoming Events
Keep an eye out for upcoming meetups and events around the world.
Somewhere else you want us to be?
Please feel free to reach out to tyler <at> clickhouse <dot> com.
You can also peruse ClickHouse Events for a list of all upcoming trainings, meetups, speaking engagements, etc.
Upcoming meetups
- Boston Meetup - May 6th, 2026
- ClickHouse + Cast AI Meetup (Singapore) - May 6th, 2026
- Long Beach Pycon Party - May 15th, 2026
- Agentic AI Unplugged: Bengaluru Edition - May 15th, 2026
- Chicago Meetup - May 19th, 2026
- AI Demo Night NY - May 21st, 2026
- Toronto Meetup - June 3rd, 2026
Recent meetups
- Taipei Open Source Night - April 16th, 2026
- San Jose Meetup - April 16th, 2026
- AI Demo Night SF - April 9th, 2026
- Seattle Observability Meetup - March 26th, 2026
- Milan Meetup - March 26th, 2026
- RSA Iceberg Meetup SF - March 24th, 2026
Recent Recordings
- Recent Meetup Videos: Meetup Playlist Whenever possible recordings of the ClickHouse Community Meetups are edited and presented as individual talks.
Interested in joining ClickHouse and making it your full-time job?
ClickHouse is a nice DBMS, and it's a good place to work.
Check out our current openings here: https://clickhouse.com/company/careers
Email: [email protected]!