[WIP] OPEN_STRUCT storage layer — columnar two-tier dense/sparse index (PR 2/4)#18643

Draft

tarun11Mavani wants to merge 15 commits into

apache:masterfrom

tarun11Mavani:open-struct-storage

Commits on Jun 1, 2026

[WIP] OPEN_STRUCT storage layer — columnar two-tier dense/sparse index (PR 2/4)

tarun11Mavani
and
claude
committed
fix(open_struct): support BIG_DECIMAL in dense materialization

tarun11Mavani
and
claude
committed
refactor(stats): add FieldSpec-based constructor to AbstractColumnStatisticsCollector

tarun11Mavani
and
claude
committed
refactor(stats): add FieldSpec-based collector factory overload

tarun11Mavani
and
claude
committed
refactor(open_struct): build dense dictionary and stats from a column stats collector

tarun11Mavani
and
claude
committed
refactor(open_struct): emit dense child metadata via shared addColumnMetadataInfo

tarun11Mavani
and
claude
committed
refactor(open_struct): size dict-vs-raw from collector stats; drop _distinctValuesPerKey

tarun11Mavani
and
claude
committed
refactor(open_struct): drop redundant dictionaryElementSize alias

tarun11Mavani
and
claude
committed
refactor(open_struct): write dense child indexes via standard index creators

tarun11Mavani
and
claude
committed

Commits on Jun 2, 2026