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ClickHouse® is a real-time analytics DBMS
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One binlog connection for many databases. Suggesting to disable this feature by default for now. It should be explicitly enabled by SETTINGS use_binlog_client=1. But if you would permanently enable it in MaterializedMySQLSettings, it should keep old behavior and all tests should pass too. 1. Introduced `IBinlog` and its impl to read the binlog events from socket - `BinlogFromSocket`, or file - `BinlogFromFile`. Based on prev impl of `EventBase` and the same old binlog parsers. It fully keeps BC with old version. Fixed `./check-mysql-binlog` to test new impl. 2. Introduced `BinlogEventsDispatcher`, it reads the event from the source `IBinlog` and sends it to currently attached `IBinlog` instances. 3. Introduced `BinlogClient`, which is used to group a list of `BinlogEventsDispatcher` by MySQL binlog connection which is defined by `user:password@host:port`. All dispatchers with the same binlog position should be merged to one. 4. Introduced `BinlogClientFactory`, which is a singleton and it is used to track all binlogs created over the instance. 5. Introduced `use_binlog_client` setting to `MaterializedMySQL`, which forces to reuse a `BinlogClient` if it already exists in `BinlogClientCatalog` or create new one. By default, it is disabled. 6. Introduced `max_bytes_in_binlog_queue` setting to define the limit of bytes in binlog's queue of events. If bytes in the queue increases this limit, `BinlogEventsDispatcher` will stop reading new events from source `IBinlog` until the space for new events will be freed. 7. Introduced `max_milliseconds_to_wait_in_binlog_queue` setting to define max ms to wait when the max bytes exceeded. 7. Introduced `max_milliseconds_to_wait_in_binlog_queue` setting to define max ms to wait when the max bytes exceeded. 8. Introduced `max_bytes_in_binlog_dispatcher_buffer` setting to define max bytes in the binlog dispatcher's buffer before it is flushed to attached binlogs. 9. Introduced `max_flush_milliseconds_in_binlog_dispatcher` setting to define max milliseconds in the binlog dispatcher's buffer to wait before it is flushed to attached binlogs. 10. Introduced `system.mysql_binlogs` system table, which shows a list of active binlogs. 11. Introduced `UnparsedRowsEvent` and `MYSQL_UNPARSED_ROWS_EVENT`, which defines that an event is not parsed and should be explicitly parsed later. 12. Fixed bug when not possible to apply DDL since syntax error or unsupported SQL. @larspars is the author of following: `GTIDSets::contains()` `ReplicationHelper` `shouldReconnectOnException()` |
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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.
- 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.
- Code Browser (github.dev) with syntax highlighting, powered by github.dev.
- Static Analysis (SonarCloud) proposes C++ quality improvements.
- Contacts can help to get your questions answered if there are any.
Upcoming Events
Keep an eye out for upcoming meetups around the world. Somewhere else you want us to be? Please feel free to reach out to tyler clickhouse com.
Recent Recordings
- Recent Meetup Videos: Meetup Playlist Whenever possible recordings of the ClickHouse Community Meetups are edited and presented as individual talks. Current featuring "Modern SQL in 2023", "Fast, Concurrent, and Consistent Asynchronous INSERTS in ClickHouse", and "Full-Text Indices: Design and Experiments"
- Recording available: v23.10 Release Webinar All the features of 23.10, one convenient video! Watch it now!
- All release webinar recordings: YouTube playlist
Interested in joining ClickHouse and making it your full-time job?
We are a globally diverse and distributed team, united behind a common goal of creating industry-leading, real-time analytics. Here, you will have an opportunity to solve some of the most cutting-edge technical challenges and have direct ownership of your work and vision. If you are a contributor by nature, a thinker and a doer - we’ll definitely click!
Check out our current openings here: https://clickhouse.com/company/careers
Can't find what you are looking for, but want to let us know you are interested in joining ClickHouse? Email careers@clickhouse.com!