Add table setting to change compression codec used for Kafka table engines#89073
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antaljanosbenjamin merged 7 commits intomasterfrom Oct 30, 2025
Merged
Add table setting to change compression codec used for Kafka table engines#89073antaljanosbenjamin merged 7 commits intomasterfrom
antaljanosbenjamin merged 7 commits intomasterfrom
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I have to add docs too. |
yariks5s
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Oct 28, 2025
Empty string as a possible value is necessary in order to inherit configured values from config or the default value from librdkafka.
yariks5s
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Oct 29, 2025
| - `kafka_handle_error_mode` — How to handle errors for Kafka engine. Possible values: default (the exception will be thrown if we fail to parse a message), stream (the exception message and raw message will be saved in virtual columns `_error` and `_raw_message`), dead_letter_queue (error related data will be saved in system.dead_letter_queue). | ||
| - `kafka_commit_on_select` — Commit messages when select query is made. Default: `false`. | ||
| - `kafka_max_rows_per_message` — The maximum number of rows written in one kafka message for row-based formats. Default : `1`. | ||
| - `kafka_compression_codec` — Compression codec used for producing messages. Supported: empty string, `none`, `gzip`, `snappy`, `lz4`, `zstd`. In case of empty string the compression codec is not set by the table, thus values from the config files or default value from `librdkafka` will be used. Default: empty string. |
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It's none above, in the CREATE statement
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| - `kafka_compression_codec` — Compression codec used for producing messages. Supported: empty string, `none`, `gzip`, `snappy`, `lz4`, `zstd`. In case of empty string the compression codec is not set by the table, thus values from the config files or default value from `librdkafka` will be used. Default: empty string. | |
| - `kafka_compression_codec` — Compression codec used for producing messages. Supported: empty string, `none`, `gzip`, `snappy`, `lz4`, `zstd`. In case of empty string the compression codec is not set by the table, thus values from the config files or default value from `librdkafka` will be used. Default: `none`. |
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Let's change in the create statement above instead.
yariks5s
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Changelog entry (a user-readable short description of the changes that goes into CHANGELOG.md):
The
kafka_compression_codecandkafka_compression_levelsettings can now be used to specify the compression for Kafka producers in both Kafka engines.Documentation entry for user-facing changes