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jensholdgaard merged 12 commits into from
Jul 3, 2026
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docs(rfc): rfc 0022 — queryable attribute columns (rfc 0005 amendment) #343

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da1ba17
docs(rfc): rfc 0022 — queryable attribute columns (rfc 0005 amendment)
jensholdgaard Jul 3, 2026
2ee4f86
docs(rfc): label the rfc 0022 pseudo-code fence (MD040)
jensholdgaard Jul 3, 2026
d0c79e2
docs(rfc): rfc 0022 review round — metric namespace + red-stage wording
jensholdgaard Jul 3, 2026
4b27a47
docs(rfc): rfc 0022 §3.2 is an rfc 0020 schema extension, with rollou…
jensholdgaard Jul 3, 2026
7d40293
docs(rfc): rfc 0022 §3.3 scopes the two-arm compile to == / !=
jensholdgaard Jul 3, 2026
22d2b33
docs(rfc): rfc 0022 review round — unqualified Column mechanism, metr…
jensholdgaard Jul 3, 2026
63a9578
docs(rfc): rfc 0022 — configured set vs the implicit service.name
jensholdgaard Jul 3, 2026
9506cee
docs(rfc): refer to file.size by its emitted metric name, not registr…
jensholdgaard Jul 3, 2026
943d065
docs(rfc): rfc 0022 §3.3 — the JSON arm expresses == and guarded !=, …
jensholdgaard Jul 3, 2026
80f5cf3
docs(rfc): rfc 0022 — explicit != presence check + parquet STRING log…
jensholdgaard Jul 3, 2026
6119525
docs(rfc): rfc 0022 — .6 cites §3.1; non-string fall-through is ==/!=…
jensholdgaard Jul 3, 2026
a0f0036
docs(rfc): rfc 0022 — string-valued example keys; int AnyValue caveat…
jensholdgaard Jul 3, 2026
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1 change: 1 addition & 0 deletions docs/SUMMARY.md
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Expand Up @@ -39,6 +39,7 @@
- [RFC 0019 — Storage-backend selection](./rfcs/0019-storage-backend-selection.md)
- [RFC 0020 — Configuration file](./rfcs/0020-configuration-file.md)
- [RFC 0021 — DataFusion / Arrow upgrade](./rfcs/0021-datafusion-arrow-upgrade.md)
- [RFC 0022 — Queryable attribute columns](./rfcs/0022-queryable-attribute-columns.md)

# Talks

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11 changes: 11 additions & 0 deletions docs/rfcs/0005-parquet-storage.md
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Expand Up @@ -384,6 +384,17 @@ STRING>` for the common `string`-valued case, leaving complex
values in the JSON column). The gate is "we have a concrete
consumer," not "it might be useful."

> **Amendment 2026-07-03 (the consumer arrived).** The reservation
> above is discharged by **RFC 0022** (queryable attribute columns):
> the RFC 0002 DSL's `service` / `resource.<key>` / `attr.<key>`
> predicates are the concrete consumer (#147). RFC 0022 chooses
> per-key promoted `OPTIONAL` columns over the `MAP` sketch (a map's
> statistics and bloom filters are not key-scoped, so it cannot
> prune — see RFC 0022 §4) and extends the §3.6 encodings table when
> it lands. This section's JSON columns remain the source of truth;
> no schema bytes change before RFC 0022's `green` slices land (at
> `red` only failing stubs exist).

### 3.4 Partition layout on disk

Data files live at:
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