Module prefilter 

Prefilter framework for parquet reader.

Prefilter optimization reduces I/O by reading only a subset of columns first (the prefilter phase), applying filters to compute a refined row selection, then reading the remaining columns with the refined selection.

Structs

CachedPrimaryKeyFilter 🔒

PrefilterContext 🔒

Context for prefiltering a row group.

PrefilterContextBuilder 🔒

Pre-built state for constructing PrefilterContext per row group.

PrefilterResult 🔒

Result of prefiltering a row group.

Functions

execute_prefilter 🔒

Executes prefiltering on a row group.

is_usable_primary_key_filter 🔒

Returns whether a filter can be applied by parquet primary-key prefiltering.

matching_row_ranges_by_primary_key 🔒