Module mz_persist_types::stats

Aggregate statistics about data stored in persist.

Modules

• proto_bytes_stats
  Nested message and enum types in ProtoBytesStats.
• proto_dyn_stats
  Nested message and enum types in ProtoDynStats.
• proto_json_stats
  Nested message and enum types in ProtoJsonStats.
• proto_primitive_stats
  Nested message and enum types in ProtoPrimitiveStats.

Structs

• AtomicBytesStats
  Vec<u8> stats that cannot safely be trimmed.
• JsonMapElementStats
• NoneStats
  Empty set of statistics.
• OptionStats
  Statistics about a column of some optional type.
• PartStats
  Aggregate statistics about data contained in a Part.
• PartStatsMetrics
  Metrics for PartStats.
• PrimitiveStats
  Statistics about a column of some non-optional parquet type.
• ProtoAtomicBytesStats
• ProtoBytesStats
• ProtoDynStats
• ProtoJsonMapElementStats
• ProtoJsonMapStats
• ProtoJsonStats
• ProtoOptionStats
• ProtoPrimitiveBytesStats
• ProtoPrimitiveStats
• ProtoStructStats
• StructStats
  Statistics about a column of a struct type with a uniform schema (the same columns and associated T: Data types in each instance of the struct).

Enums

• BytesStats
  Statistics about a column of Vec<u8>.
• JsonStats
• StatsFn
  The logic to use when computing stats for a column of T: Data.
• TruncateBound
  Whether a truncated value should be a lower or upper bound on the original.

Constants

• TRUNCATE_LEN
  The length to truncate Vec<u8> and String stats to.

Traits

• ColumnStats
  Aggregate statistics about a column of type T.
• DynStats
  Type-erased aggregate statistics about a column of data.
• StatsFrom
  A source of aggregate statistics about a column of data.
• TrimStats

Functions

• trim_to_budget
  Trims the included column status until they fit within a budget.
• truncate_bytes
  Truncates a u8 slice to the given maximum byte length.
• truncate_string
  Truncates a string to the given maximum byte length.