Fundamentals
Core Kafka engine behavior and query semantics in ClickHouse.
Kafka engine
librdkafka changelog
This changelog tracks the librdkafka version bundled with ClickHouse and notable related fixes.
git log -- contrib/librdkafka | git name-rev --stdin
| ClickHouse® version | librdkafka version |
|---|---|
| 25.3+ (#63697 ) | 2.8.0 + few fixes |
| 21.10+ (#27883 ) | 1.6.1 + snappy fixes + boring ssl + illumos_build fixes + edenhill#3279 fix |
| 21.6+ (#23874 ) | 1.6.1 + snappy fixes + boring ssl + illumos_build fixes |
| 21.1+ (#18671 ) | 1.6.0-RC3 + snappy fixes + boring ssl |
| 20.13+ (#18053 ) | 1.5.0 + msan fixes + snappy fixes + boring ssl |
| 20.7+ (#12991 ) | 1.5.0 + msan fixes |
| 20.5+ (#11256 ) | 1.4.2 |
| 20.2+ (#9000 ) | 1.3.0 |
| 19.11+ (#5872 ) | 1.1.0 |
| 19.5+ (#4799 ) | 1.0.0 |
| 19.1+ (#4025 ) | 1.0.0-RC5 |
| v1.1.54382+ (#2276 ) | 0.11.4 |
Consumption Patterns
Message consumption models, replay patterns, and delivery semantics.
Schema and Formats
Schema inference and format-specific integration details.
Operations and Troubleshooting
Runtime tuning, resource settings, and error diagnostics.