[Experiment] Antalya 26.6: Parquet v3 constant column skip - #2181

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UnamedRus wants to merge 70 commits into

antalya-26.6from

parquet-v3-constant-column-skip-antalya

Commits on Aug 6, 2026

Parquet v3: materialize constant column chunks from statistics

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c6b70b3
Parquet v3: rebalance stage budgets and charge decoded memory honestly

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34816a3
Parquet v3: reconcile decoded memory before formOutputColumn moves it

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f260506
Parquet v3: fix constant-column detection gates (never fired)

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2a20ab9
Parquet v3: decouple compressed prefetch from decode (ColumnDataPrefetch stage)

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114640e
Parquet v3: bandwidth back-pressure for compressed prefetch (finding #4)

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a019cd7
Parquet v3: adapt to antalya-26.6 (drop Nullable(Tuple) group-null refs)

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a3ee936
DCO Remediation Commit for UnamedRus <dtitmoav@gmail.com>
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ac2fe8e
Parquet v3: drop stray orphan setting from SettingsChangesHistory

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77c2c72
Parquet v3: materialize all-null column chunks from statistics

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f37f947
Parquet v3: purge bad-merge contamination from SettingsChangesHistory

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5fa11c0
Parquet v3: record input_format_parquet_prefetch_bandwidth_hide_seconds in history

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2175750
Re-trigger CI after GitHub Actions infra outage

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bb601c1

Commits on Aug 7, 2026

Port DataLakeCatalog namespace filter (Altinity/ClickHouse#1337)

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c89ccf1
DataLake namespace port: keep RestCatalog members protected

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29a2569
DataLake namespace port: fix RestCatalog ctor call in gtest_rest_catalog

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065cf78
Parquet v3: materialize constant column chunks as ColumnConst

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3c82a4e
Parquet v3: per-subgroup (page-level) constant-column detection [tier 2]

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a051744
Parquet v3: skip prefetch of constant subgroup pages [tier 2 phase 3]

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c37b8ab
Parquet v3: optional force-load of column index for constant detection

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60841f9
Parquet v3: mixed-topology constant-page fill [experimental, default off]

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e13b115
Parquet v3: skip prefetch of filled constant pages (mixed topology)

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9bba260
Parquet v3: allow string constants (drop min==max truncation guard)

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ede6e2a
Parquet v3: handle all-null pages in mixed-topology fill (lift gate 1)

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217c85a
Parquet v3: allow page-pruned columns in mixed fill (lift gate 3)

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ac73c36
Parquet v3: filter-aware mixed fill under prewhere (lift gate 4)

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2cae901
Parquet v3: cast the materialized constant (future-proof needs_cast)

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f78ffa2
Parquet v3: footer-size hint for the metadata tail read

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56fc24d
Iceberg: size the parquet footer read from manifest stats

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e3ab773
Parquet v3: fix tier-2 constant detection for non-nullable columns
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5c46e9a
Parquet v3: serve Column/Offset Index from the retained footer tail
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6fc1e8a
Object storage: don't shadow random-access formats with a from-start prefetch
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c581d93
Iceberg: seed metadata files cache on the uuid-less bootstrap read
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1e3eccf
Iceberg: use the catalog-provided table-uuid for the first metadata read
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e65e1a3

Commits on Aug 8, 2026

Commits on Aug 9, 2026

Commits on Aug 10, 2026

Iceberg: parallelize manifest-entry pruning

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ba52361

Commits on Aug 12, 2026

Iceberg: don't materialize metadata-log rows when logging is disabled

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65e22e9
Parquet: tighten Iceberg speculative-footer size predictor

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0a53c10
Parquet v3: time-to-first-byte trigger for hedged reads

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5b1eca2
Merge branch 'antalya-26.6' into parquet-v3-constant-column-skip-antalya
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1b1028c
Remove 04401_system_reset_ddl_worker_access on this experiment branch

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b86558f

Commits on Aug 13, 2026

Commits on Aug 14, 2026

Iceberg: batch the parallel manifest-entry producer/consumer hand-off

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eac9b83
Revert "Iceberg: batch the parallel manifest-entry producer/consumer hand-off"
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c236978
Iceberg: read manifest files in parallel across producer threads

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fb1acdb
Merge branch 'antalya-26.6' into parquet-v3-constant-column-skip-antalya

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1c332e0

Commits on Aug 20, 2026

Fix Iceberg min/max pruning lost under object_storage_cluster

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5859b70
Merge branch 'antalya-26.6' into parquet-v3-constant-column-skip-antalya

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ed61aea
Fix Iceberg min/max pruning under object_storage_cluster: rewrite filter to physical column names

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453018c
distributed_plan: make ReadFromObjectStorage serializable (increment 1: scaffold)

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1051d19
distributed_plan: implement ReadFromObjectStorage deserialize (increment 2)

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0dc3eef
distributed_plan: enable object-storage reads in makeDistributed (increment 3)

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34823b1
distributed_plan: make ReadFromObjectStorage deserialize execute correctly (increment 4)

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524989d
clickhouse-local: register query plan steps for distributed_plan

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b1b5542
distributed_plan: partition object-storage files across worker buckets (increment 5)

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e89ce36
DCO Remediation Commit for UnamedRus <dtitmoav@gmail.com>
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e419331
DCO Remediation Commit for UnamedRus <dtitmoav@gmail.com>
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83da1a8

Commits on Aug 21, 2026