[perf](catalog) fe-connector-iceberg hot-path caching + fe-core per-statement metadata funnel, with session=user cache isolation#65785

Merged

morningman merged 47 commits into

apache:branch-catalog-spifrom

morningman:catalog-spi-review-16

Jul 20, 2026

Commits on Jul 20, 2026

[doc](catalog) add hot-path heavy-op problem-class summary and fe-connector-iceberg perf audit report

morningman
and
claude
committed
[doc](catalog) add fe-connector-iceberg hot-path perf fix task workspace

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-01: finalize table-cache design

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: memoize the resolved Table within and across queries (PERF-01)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-01: summary + tracker updates; next = PERF-02

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: cache the partition-view scan across queries (PERF-02)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-02: design + summary + tracker updates; next = PERF-03

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: memoize the file-format inference across queries (PERF-03)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-03: design + summary + tracker updates; next = PERF-04

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: reconnect the manifest cache to streaming + COUNT(*) planning, lazily (PERF-04)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-04: design + summary + tracker updates; next = PERF-05

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: cache the table comment for vended-credentials catalogs (PERF-05)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-05: design + summary + tracker updates; next = PERF-06

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: derive the vended storage config once per scan, not per file (PERF-06)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-06: design + summary + tracker updates; next = PERF-07

morningman
and
claude
committed
[perf](catalog) fe-core: add a per-statement ConnectorStatementScope (PERF-07)

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: load each table once per statement, drop the fat handle and the delete stash (PERF-07)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-07: design summary + tracker updates; next = PERF-08

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-07: add the authoritative design docs

morningman
and
claude
committed
[perf](catalog) fe-core: collapse rewrite_data_files per-group registration into one union scan (PERF-08 / C19)

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: dedup expire_snapshots delete-manifest reads across snapshots (PERF-08 / C21)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-08: design + summary + tracker updates; next = P2 remaining

morningman
and
claude
committed
[perf](catalog) fe-connector-iceberg: memoize per-file scan-range invariants across a file's byte-slices (PERF-11 / C12+C15a+C13)

morningman
and
claude
committed
[doc](catalog) fe-connector-iceberg PERF-11 (partial) + PERF-10 deferral: design/summary/tracker

morningman
and
claude
committed
[perf](catalog) fe-core: memoize PluginDrivenScanNode scan-provider per handle (PERF-11 / C14)

morningman
and
claude
committed
[doc](catalog) fe-core PERF-11 C14-provider-memo: design + summary + P2-remainder recon; tracker/handoff updates

morningman
and
claude
committed
[doc](catalog) add master-todo + per-statement-table-owner-port tracking spaces

morningman
and
claude
committed
[doc](catalog) per-statement-table-owner port: cross-connector recon conclusions + Trino-refactor groundwork

morningman
and
claude
committed
[feat](catalog) fe-core: engine-side per-statement metadata funnel (foundation)

morningman
and
claude
committed
[feat](catalog) fe-core: deterministic close of the per-statement metadata scope (close wiring)

morningman
and
claude
committed
[doc](catalog) per-statement metadata redesign: phasing decisions + STEP 1 (C1 foundation + C2 close wiring)

morningman
and
claude
committed
[feat](catalog) fe-core: route read/scan/DDL/MVCC through the per-statement metadata funnel + force read-through for cross-statement loaders

morningman
and
claude
committed
[doc](catalog) per-statement metadata: C3 read-side rerouting checklist + progress/handoff

morningman
and
claude
committed
[feat](catalog) fe-core: arch gate pinning metadata acquisition to the per-statement funnel

morningman
and
claude
committed
[doc](catalog) per-statement metadata: read-keystone closeout (anti-drift gate) + STEP 2 handoff

morningman
and
claude
committed
[feat](catalog) fe-connector-hive: memoize HMS-gateway sibling metadata per statement

morningman
and
claude
committed
[doc](catalog) per-statement metadata: STEP 2 (HMS sibling funnel) closeout + STEP 3 handoff

morningman
and
claude
committed
[feat](catalog) fe-core: route write-arm metadata acquisition through the per-statement funnel

morningman
and
claude
committed
[feat](catalog) fe-core: hoist the plugin-driven write transaction into a per-statement co-holder

morningman
and
claude
committed
[doc](catalog) per-statement metadata: write-sharing closeout (RD-3) + STEP 4 handoff

morningman
and
claude
committed
[doc](catalog) cache isolation: P4 design (authorization-sensitive cache leak fix)

morningman
and
claude
committed
[feat](catalog) fe-connector-iceberg: disable authz-sensitive projection caches under session=user

morningman
and
claude
committed
[feat](catalog) fe-core: bypass the shared schema cache for session=user catalogs

morningman
and
claude
committed
[feat](catalog) fe-connector-hive: fail-loud if a gateway iceberg sibling is session=user

morningman
and
claude
committed
[feat](catalog) add anti-drift gate for authz-sensitive cache isolation on IcebergConnector

morningman
and
claude
committed
[doc](catalog) cache isolation closeout (RD-4) + read/write refactor main line done

morningman
and
claude
committed
[fix](catalog) align upstream #65676 DV test to connector uriNormalizer signature after rebase

morningman
and
claude
committed