iceberg_data_* session settings

ClickHouse session settings in the iceberg_data_* generated group.

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

iceberg_data_file_size_lower_threshold_compaction

Data files smaller than this are selected for compaction.

The default is 0.75 of the documented default of the Iceberg table property write.target-file-size-bytes (512 MiB), which is how the rewrite_data_files procedure derives its min-file-size-bytes option, see https://iceberg.apache.org/docs/1.5.2/configuration/.

iceberg_data_file_size_upper_threshold_compaction

Data files larger than this are selected for compaction.

The default is 1.8 of the documented default of the Iceberg table property write.target-file-size-bytes (512 MiB), which is how the rewrite_data_files procedure derives its max-file-size-bytes option, see https://iceberg.apache.org/docs/1.5.2/configuration/.