shuiyisong ec240ad7e6 feat(mito): preserve ordinary sparse keys across writes and schema changes (#9920) ...

* feat(mito): support ordinary sparse append tables

Ordinary append tables need sparse keys for optional series tags, including JSON2 values written through row and bulk paths. This change validates sparse tag schemas and defaults, keeps key identity stable when nullable tags are added, selects flat SST storage, and preserves append-mode semantics when reopening regions.

Includes storage, bulk-write, schema-evolution and repartition tests, plus SQL and mixed-version fixtures. Existing metric-engine sparse key handling remains supported. This is the storage prerequisite for exemplar ingestion; it introduces no exemplar protocol endpoint.

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* fix(mito): preserve reserved sparse key semantics

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* fix(mito): clarify sparse errors and avoid panics

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* perf(mito): reduce sparse key validation overhead

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* fix: sqlness

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* perf(mito-codec): reduce sparse validation cost

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

* refactor(mito): remove ordinary sparse support

Signed-off-by: shuiyisong <xixing.sys@gmail.com>

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Signed-off-by: shuiyisong <xixing.sys@gmail.com>

2026-10-29 05:45:07 +00:00

..

distributed

fix(query): keep requested sort when filtering on a lossy cast (#10026)

2026-10-28 10:40:43 +00:00

standalone

feat(mito): preserve ordinary sparse keys across writes and schema changes (#9920)

2026-10-29 05:45:07 +00:00