object_shared_data_buckets_for_compact_part
The number of buckets for JSON shared data serialization in Compact parts. Works withmap_with_buckets and advanced shared data serializations.
The maximum allowed value is 256.
object_shared_data_buckets_for_wide_part
The number of buckets for JSON shared data serialization in Wide parts. Works withmap_with_buckets and advanced shared data serializations.
The maximum allowed value is 256.
object_shared_data_serialization_version
Serialization version for shared data inside JSON data type. Possible values:map- store shared data asMap(String, String)map_with_buckets- store shared data as several separateMap(String, String)columns. Using buckets improves reading individual paths from shared data.advanced- special serialization of shared data designed to significantly improve reading of individual paths from shared data. Note that this serialization increases the shared data storage size on disk because we store a lot of additional information.
map_with_buckets and advanced serializations is determined by settings
object_shared_data_buckets_for_compact_part/object_shared_data_buckets_for_wide_part.
object_shared_data_serialization_version_for_zero_level_parts
This setting allows to specify different serialization version of the shared data inside JSON type for zero level parts that are created during inserts. It’s recommended not to useadvanced shared data serialization for zero level parts because it can increase
the insertion time significantly.