stream_* session settings

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

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.

stream_poll_timeout_ms

Timeout for polling data from/to streaming storages.