Module range_cache 

Utilities for the partition range scan result cache.

Structs

CacheBatchBuffer 🔒

Buffers record batches for caching, tracking memory size while deduplicating shared dictionary values across batches.

PartitionRangeRowGroups 🔒

Row groups and whether all sources are file-only for a partition range.

RangeScanCacheKey 🔒

Cache key for range scan outputs.

RangeScanCacheValue 🔒

Cached result for one range scan.

ScanRequestFingerprint 🔒

Fingerprint of the scan request fields that affect partition range cache reuse.

ScanRequestFingerprintBuilder 🔒

SharedScanRequestFingerprint 🔒

Non-copiable struct of the fingerprint.

Functions

build_range_cache_key 🔒

Builds a cache key for the given partition range if it is eligible for caching.

cache_flat_range_stream 🔒

Wraps a stream to cache its output for future range cache hits.

cached_flat_range_stream 🔒

Returns a stream that replays cached record batches.

collect_partition_range_row_groups 🔒

Collects (file_id, row_group_index) pairs from a partition range’s row group indices.

pk_values_ptr_eq 🔒

Returns true if two primary key dictionary arrays share the same underlying values buffers by pointer comparison.

query_time_range_covers_partition_range 🔒