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dennis zhuang a314ac4281 fix(mito2): truncate parquet column index min/max for SST writes (#9420 )

* fix(mito2): truncate parquet column index min/max for SST writes

The SST writer and the bulk part encoder disabled column index truncation
together with statistics truncation in #6977. Mito never reads the column
index, but every page of a large string or binary column still stored its
full min and max values, uncompressed. Truncate the column index to the
parquet default of 64 bytes and keep chunk statistics untruncated, since
primary key pruning decodes them.

Signed-off-by: Dennis Zhuang <killme2008@gmail.com>

* docs(mito2): note that the column index must not be used to decode primary keys

Signed-off-by: Dennis Zhuang <killme2008@gmail.com>

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Signed-off-by: Dennis Zhuang <killme2008@gmail.com>

2026-09-30 08:40:27 +00:00

benches

perf(mito2): lazily decode dense primary key columns (#9226 )

2026-09-22 15:52:54 +00:00

src

fix(mito2): truncate parquet column index min/max for SST writes (#9420 )

2026-09-30 08:40:27 +00:00

test-data

refactor: json2 v2 storage layout (#8979 )

2026-09-01 13:39:56 +00:00

AGENTS.md

feat(mito): limit approximate series index disk usage (#9313 )