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These settings are available in system.settings and are autogenerated from source.

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stream_flush_interval_ms

Works for tables with streaming in the case of a timeout, or when a thread generates max_insert_block_size rows. The default value is 7500. The smaller the value, the more often data is flushed into the table. Setting the value too low leads to poor performance.

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stream_poll_timeout_ms

Timeout for polling data from/to streaming storages.
Last modified on July 23, 2026