mz_persist_types

Module stats

Expand description

Aggregate statistics about data stored in persist.

Re-exports§

pub use bytes::AtomicBytesStats;
pub use bytes::BytesStats;
pub use bytes::FixedSizeBytesStats;
pub use bytes::FixedSizeBytesStatsKind;
pub use json::JsonMapElementStats;
pub use json::JsonStats;
pub use primitive::PrimitiveStats;
pub use primitive::PrimitiveStatsVariants;
pub use primitive::TRUNCATE_LEN;
pub use primitive::TruncateBound;
pub use primitive::truncate_bytes;
pub use primitive::truncate_string;
pub use structured::StructStats;

Modules§

bytes
json
primitive
proto_bytes_stats: Nested message and enum types in ProtoBytesStats.
proto_dyn_stats: Nested message and enum types in ProtoDynStats.
proto_fixed_size_bytes_stats: Nested message and enum types in ProtoFixedSizeBytesStats.
proto_json_stats: Nested message and enum types in ProtoJsonStats.
proto_primitive_stats: Nested message and enum types in ProtoPrimitiveStats.
structured

Macros§

primitive_stats 🔒: We collect stats for all primitive types in exactly the same way. This macro de-duplicates some of that logic.

Structs§

ColumnNullStats: Statistics about the null values in a column.
ColumnarStats: Statistics for a single column of data.
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.
ProtoAtomicBytesStats
ProtoBytesStats
ProtoDynStats
ProtoFixedSizeBytesStats
ProtoJsonMapElementStats
ProtoJsonMapStats
ProtoJsonStats
ProtoOptionStats
ProtoPrimitiveBytesStats
ProtoPrimitiveStats
ProtoStructStats

Enums§

ColumnStatKinds: All of the kinds of statistics that we support.

Traits§

ColumnStats: Aggregate statistics about a column of type T.
ColumnarStatsBuilder: A type that can incrementally collect stats from a sequence of values.
DynStats: Type that can be used to represent some ColumnStats.
TrimStats: Trim, possibly in a lossy way, statistics to reduce the serialization costs.

Functions§

any_columnar_stats 🔒: Returns a Strategy that generates arbitrary ColumnarStats.
trim_to_budget: Trims the included column status until they fit within a budget.
trim_to_budget_jsonb 🔒
trim_to_budget_struct 🔒: Recursively trims cols in the struct, greatest-size first, keeping force kept cols and ancestors of force kept cols.