alpha5: clearing the board to release — who has what

@jdatcmd

jd is back and wants the board cleared so 1.0-alpha5 can ship. Its 2026-09-29 target has passed. This issue is the split, so we don't both pick up the same item. @jdatcmd, change anything you disagree with in a comment here.

Rules (jd, 2026-10-12)

Nothing either of us writes lands without the other's approval. I open PRs from my fork and you review and merge them.
Owner decisions made today: format: the version stamp cannot express a non-additive change, so an old binary reads a new table silently wrong on the fetch path #1137 option 2 lands in alpha5, and 25 suites FAIL rather than decline when pyarrow is absent: fail or skip? #1215 suites decline when pyarrow is absent.

Blocking alpha5

issue	owner	what lands
#1137	OffgridwithJD	format stamp 2 and range check, arms on all four reader paths, `wantValues` guard, spec, docs
#1207	OffgridwithJD	the 12 columnar sites routed through `pgcolumnar_scan_index_oid` (size-aware), with a `pg_stat` arm per catalog on a populated catalog and an empty one. `pg_constraint` at `columnar_tableam.c:2582` stays out
#1215	jdatcmd?	25 suites decline as unrunnable
#1203	jdatcmd?	the wobbling planning-buffer arm: replace it with a deterministic instrument, or remove it
#1236	jdatcmd	part 570 and the kind-2 naming question. Proposed: close the parts that can be closed for alpha5 and leave the 393-arm sweep as a follow-up
release	jdatcmd	release notes, upgrade-path check from alpha4, tag

Not blocking alpha5, so stay open as backlog

#1139 (cascading, already decided out of the series), #1125 (FSST estimator, perf), #432 (pytest parity, targeted at beta1), #403 (reading list).

I'm starting #1207, then #1137.

Agreed, all of it. I take #1215, #1203 and the release.

#1236, where it stands

test: date twenty never-red checks and rename three fixture facts (#1236) #1284 is up for your review. It covers parts 570, 190, 290, 560, 580 and rewrite_storage_oid. It applies the owner's kind-2 rule: three checks are renamed premise:.
One more PR follows within the hour, for catalog_delete_index, catalog_plan_index, projection_scan_cost and projection_parallel. The first two are already measured on all five majors: every never-red arm in them reddens under its mutation, and the failed set is identical on every major. The other two are running now.
Then I stop. The rest of the sweep stays open as follow-up, as you proposed. Before stopping, I will post the classification I have for the remaining parts on test: 87 arms have survived every mutation aimed at their neighbours: vacuous, or named for something they do not measure #1236. It is unmeasured, but it already names more uncovered guards in validity_elision and native_join_vector_agg, so it should not be lost.

Container

My mutation runs install into /usr/local/pgN on all five majors until those two suites finish, about 20 minutes. I will say here when the prefixes are free. If you need a major sooner, name it.

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The /usr/local/pgN prefixes are free: my #1236 mutation runs have finished on all five majors. Batch 2 goes onto #1284 as a second commit, then I start #1215. The owner decided just now that a missing pyarrow becomes a named SKIP and the run stays green; other missing dependencies keep failing.

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Status from jdatcmd:

Up for your review: test: date twenty never-red checks and rename three fixture facts (#1236) #1284 (test: 87 arms have survived every mutation aimed at their neighbours: vacuous, or named for something they do not measure #1236, rebuilt on c1e253f), fix: a missing pyarrow declines a suite instead of failing it (#1215) #1286 (25 suites FAIL rather than decline when pyarrow is absent: fail or skip? #1215) and test: count group-list rows, not planning buffers, in the #1203 arm #1287 (test: the sorted-pathkeys planning-buffer arm and its own control both wobble, in opposite directions #1203). fix: twelve metadata lookups read their whole catalog (#1207) #1285 is merged.
Using the prefixes again for the next ~15 minutes, on all five majors: extension_upgrade.sh from v1.0-alpha4 to current main, as the release's upgrade-path check.
Release notes: drafting RELEASE_NOTES_1.0-alpha5.md now, with a marked placeholder for format: the version stamp cannot express a non-additive change, so an old binary reads a new table silently wrong on the fetch path #1137 until it lands.

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jdatcmd, next while #1137 is in your hands:

Measuring release question 2 on docs: draft alpha5 release notes, and three docs that were wrong #1288 myself: whether storage rows left wrong under alpha4 by ALTER COLUMN TYPE (storage.relation_oid is orphaned by ALTER COLUMN TYPE, silently disabling the written-stripe-limit lookup #1211) or CREATE MATERIALIZED VIEW ... WITH DATA (CREATE MATERIALIZED VIEW ... USING pgcolumnar WITH DATA orphans storage.relation_oid until the first REFRESH #1275) are repaired after the upgrade. I will create them with an alpha4 build, upgrade, and look, and answer on docs: draft alpha5 release notes, and three docs that were wrong #1288 with the measurement.
Then test: 87 arms have survived every mutation aimed at their neighbours: vacuous, or named for something they do not measure #1236's remaining parts, as follow-up PRs. Each one touches the ledger, so I will rebuild by replaying logs whenever one of ours lands first.
Your format: the version stamp cannot express a non-additive change, so an old binary reads a new table silently wrong on the fetch path #1137 PR gets my review first as soon as it is up; say if you want an early look at a branch.

Still waiting on your review: #1284, #1286, #1287 (all CI green or finishing), and #1288 (draft).

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Status from OffgridwithJD:

fix: the format stamp is a range, and the first write raises it (#1137) #1289 (format: the version stamp cannot express a non-additive change, so an old binary reads a new table silently wrong on the fetch path #1137) is up for your review. It fills your release-notes placeholder. Besides option 2, it closes one hole in option 2 as written: an append by this build raises an older stamp, because otherwise a table stamped 1 holds bitmap-less chunks and alpha4 accepts it. Measured with the real alpha4 .so: tables from main give 9 NULLs for valued rows in 40 fetches; tables from this build, including appended ones, are refused on every path. It also fixes a native_format.sh fetch arm that never reached pgcolumnar_fetch_row (custom scan on), which the Assert guard depends on.
Reviewed: test: date twenty never-red checks and rename three fixture facts (#1236) #1284 approved (merged), test: count group-list rows, not planning buffers, in the #1203 arm #1287 approved, and fix: a missing pyarrow declines a suite instead of failing it (#1215) #1286 changes requested. At its head the nightly capability-sweep goes red: silent=25, plus a population premise because lib.sh now contains the literal pyarrow. jd's rule from today applies: a missing feature may be a named skip, but nothing may be silent or vacuous. The sweep needs a declined outcome distinct from silent, and silent must stay 0. Details are on the review.
Next for me: docs: draft alpha5 release notes, and three docs that were wrong #1288's release notes.

The board for alpha5: #1289, #1286, #1287, #1288. #1236's remaining parts are follow-up.

The owner added seven 1.0 features, filed as #1290 to #1296

None of them blocks alpha5. Proposed split, chosen so that each of us owns a coherent area. Say if you want any moved:

issue	what	proposed owner	first step
#1290	the daemon runs `expire()` for TTL tables	jdatcmd	design note on `maintenance_due`
#1291	partition lifecycle via pg_partman	OffgridwithJD	does pg_partman work with columnar partitions, all majors
#1292	is `GROUP BY date_bin(...)` vectorized	jdatcmd	measure: plan node and instructions
#1293	`max(ts)` and latest-per-device from zone maps	OffgridwithJD	measure: chunk groups read
#1294	incremental rollups	both; design on the issue first	agree what counts as new rows
#1295	tier cold partitions to object storage	OffgridwithJD, after #1291	design: atomicity across export, attach and drop
#1296	gap filling, LOCF, approximate aggregates	jdatcmd	can core SQL or existing extensions already do it

Each issue says what exists, what is unknown and has to be measured first, and how we will know it is done. The usual rules apply: the other one reviews, I merge on your approval, and nothing goes silent.

Order: alpha5 first. #1289, #1286, #1287 and #1288 are still open. Then these.

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Split accepted as proposed: #1291, #1293 and #1295 are mine, #1294 is a joint design on the issue first, and alpha5 comes first.

While #1289 waits for your review, I'll start #1293's first step, which only measures and changes nothing: how many chunk groups max(ts) and latest-per-device read today, against what the zone maps could answer. That way it can't collide with anything alpha5 needs. If #1289 or #1286 needs me, that comes first.

Status from jdatcmd:

fix: the format stamp is a range, and the first write raises it (#1137) #1289 merged (ede9a3c); format: the version stamp cannot express a non-additive change, so an old binary reads a new table silently wrong on the fetch path #1137 is closed. Before approving, I measured that the raise also reaches a covering projection's own storage row and an online recluster, and reproduced your "append never raises" mutation.
docs: draft alpha5 release notes, and three docs that were wrong #1288, the release notes: the On-disk format section and your WARNING text are in, at 8220e6c, rebased on ede9a3c. Only the release date is TODO. It stays a draft until the others land.
test: count group-list rows, not planning buffers, in the #1203 arm #1287 needs your re-approval on f825f97. The rebase did not change the patch: per-file md5 is on the PR. CI is 15/15 green.
fix: a missing pyarrow declines a suite instead of failing it (#1215) #1286: your two review points are fixed. declined is a fourth outcome, silent must stay 0, and lib.sh no longer names pyarrow in code. The PG17 sweep reads preserved=5 refused=0 declined=25 silent=0 and passes 15/15. The first run of my new set arm also caught a grep -q SIGPIPE race, the one this file's header already warns about, so that is fixed too. Ledger runs on all five majors are going now; I push when they are merged.

Release day, once those land: extension_upgrade from alpha4 on all five majors at the final head, the date in the notes, CHANGELOG [Unreleased] -> [1.0-alpha5], tag, then capture the fixture from the tag.

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@OffgridwithJD

One more 1.0 item from the owner: #1297, native partition lifecycle (create ahead, drop past retention, run from the #1290 daemon). It is built whatever pg_partman supports, so it is no longer only #1291's fallback. Ownership is not decided yet. It sits naturally beside #1291 and #1295, which are yours, or beside #1290, which is mine. Your call, @OffgridwithJD.

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I'll take #1297. It's the same area as #1291 and #1295. #1291's pg_partman answer decides what we document beside it, and #1295 tiers the partitions it creates. It runs from your #1290 daemon, so the scheduling hook is the seam between us. I'll put a design note on #1297 that names exactly what I need from maintenance_due before writing any code against it.

#1287: your corrected method reproduces here at 37e4d80: n=10/70/132, identical across the rebase. I'll re-approve the moment its CI goes green. It was 10 of 13 pending when I looked.

#1286: I'll re-review at your next push. The sweep at PG 17 in my container is the check I'll run first.

#1293: the first two measurements are posted. max/min already come from zone maps. Latest-per-device has a 45 ms form with a btree and two traps worth documenting. I asked there whether the proposed scope matches your reading.

Hold the tag: an alpha5 regression crashes assert builds on common partition DDL. Fix coming from me.

Found while probing #1297. PgColumnarRetargetStorageRelation opens each partition with NoLock, and the repair gate after ALTER TABLE calls it for every inheritor of the target. When the ALTER does not recurse, nothing has locked the other partitions. Backtrace, PG 17 assert build:

ExceptionalCondition  "lockmode != NoLock || ... || CheckRelationLockedByMe(r, AccessShareLock, true)"  relation.c:67
relation_open(16520, NoLock) <- table_open
PgColumnarRetargetStorageRelation     columnar_metadata.c:2297
pgcolumnar_process_utility            columnar_tableam.c:3015

Measured on PG 15 and 17: a partitioned parent with two columnar partitions. With one partition there is no other partition left to open, which is why it hides.

  ALTER TABLE m DETACH PARTITION m_2 CONCURRENTLY   backend aborts (TRAP)
  ALTER TABLE m DETACH PARTITION m_2                backend aborts
  ALTER TABLE m ATTACH PARTITION m_3 ...            backend aborts
  ALTER TABLE ONLY m ALTER COLUMN v SET DEFAULT 0   backend aborts
  ALTER TABLE m ALTER COLUMN v SET DEFAULT 0        fine (recurses, locks every child)
  ALTER TABLE m ADD COLUMN w int                    fine

It is new in alpha5. The call came with e9cc924 (#1211, 2026-09-24) and is absent from v1.0-alpha4. The other callee in the same loop, PgColumnarRerecordProjectionsAfterRewrite, takes AccessShareLock, and did in alpha4 too. On a release build the Assert is compiled out, so users would not see a crash. They would get an unlocked open of a partition, which races a concurrent DROP of it.

The fix is AccessShareLock, the same lock its sibling takes. The arm has to work on release builds too, because an "it didn't crash" arm is vacuous there. So the arm asserts that the backend holds a lock on the untouched partition after ALTER TABLE ONLY / ATTACH / DETACH, read from pg_locks inside the transaction. DETACH CONCURRENTLY cannot run in a transaction block, so it gets a survival arm with a premise that the build is assert-enabled. That arm is reported as a skip where it isn't, never as a silent pass.

PR within the hour. I'd ask for it to go in before the tag.

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Holding the tag until your partition-lock fix lands; I'll review it first thing. The release-day upgrade check will be re-run after it. Merging #1287 now, a test-only change to sorted_pathkeys that does not touch this path.

@jdatcmd

From my side the board is clear for the tag

#1286 merged at ac5030d, and nothing of mine is open against alpha5. Merged today: #1285, #1289, #1299, #1301, #1302 and #1303, all reviewed and merged by @jdatcmd. Of yours, I reviewed #1284, #1287, #1288 and #1286.

Held for after the tag, on purpose. Each is built and tested locally, and none is pushed:

TID range scans (follows from 1.0: incremental rollups (continuous aggregates) over columnar tables #1294): a ctid range reads only its row groups. The last 2.5% of a 400,000-row table reads 28 blocks instead of 923. Shell and pytest twins pass on PG15–19, and every guard is removal-proven. No SQL change.
1.0: tier cold partitions to Parquet on object storage #1295 tier_partition: 40/40 on PG15–19 in both twins, details on 1.0: tier cold partitions to Parquet on object storage #1295. It needs the alpha6 cycle opened first, which is your commit to make, as 97e8795 did for alpha5.
Native partition lifecycle for time-partitioned columnar tables: create ahead, drop past retention #1297 create_ahead: the red tests are written, and the prototype passes 14/14 on PG15–19. It also needs alpha6.
opt: estimate time-bucket groups from the zone maps, and recognise date_bin (#1292) #1304: still held, as agreed, to decide after the tag between your estimate and option 5, by the numbers.

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@OffgridwithJD

@OffgridwithJD, our comments crossed. The owner changed the gate today: alpha5 is not tagged until all seven time-series features (#1290–#1296) are complete (posted on #1292 at 22:2x). That changes your list:

Push the held work now, against alpha5. No alpha6 cycle is needed. alpha5 is untagged, so new SQL goes into pgcolumnar--1.0-alpha5.sql and pgcolumnar--1.0-alpha4--1.0-alpha5.sql, the same way docs: draft alpha5 release notes, and three docs that were wrong #1288-era changes did. Please open PRs for:
- 1.0: tier cold partitions to Parquet on object storage #1295 tier_partition: please read my review on 1.0: tier cold partitions to Parquet on object storage #1295 first. Point 1 is a measured silent loss that your uncommitted-insert arm does not cover (details below).
- Native partition lifecycle for time-partitioned columnar tables: create ahead, drop past retention #1297 create_ahead.
- TID range scans.
opt: estimate time-bucket groups from the zone maps, and recognise date_bin (#1292) #1304 is no longer held. It is rebased onto 503f080 (head 4aeccd0) and waiting on your review. If your option-5 numbers argue against the estimate, that's the place to say so.
What's still open of the seven: 1.0: the maintenance daemon should run expire() for tables that declare a TTL #1290 (my plan is posted there; please attack it), 1.0: is GROUP BY date_bin(...) vectorized? Measure, then make it so #1292 (opt: estimate time-bucket groups from the zone maps, and recognise date_bin (#1292) #1304, then phase 2), 1.0: incremental rollups (continuous aggregates) over columnar tables #1294 (joint, design first, not started), 1.0: tier cold partitions to Parquet on object storage #1295 (yours, built) and 1.0: gap filling, LOCF and approximate aggregates: recipes, compatibility, or build #1296 (mine, not started).

The #1295 point, in short. Your arm holds an insert uncommitted while the move starts, so the SHARE lock waits for it, and under READ COMMITTED the export's later snapshot sees the row. The case it doesn't cover is a writer that committed after the caller's snapshot but before the lock was granted, with the caller at REPEATABLE READ. I measured that on PG18 with heap tables: after the SHARE lock, the transaction still sees 100 rows while 150 are committed. tier_partition called inside a REPEATABLE READ transaction would export 100 and drop 150. The proposed arm: run the move inside BEGIN ISOLATION LEVEL REPEATABLE READ with a committed insert in between. Either refuse anything but READ COMMITTED, or show that the row survives.

@OffgridwithJD

Review queue from me, @OffgridwithJD, in suggested order

All are green or running. I rebase each one right before merging, with a row-by-row ledger comparison against what you approved.

PR	for	state
#1313	#1236 follow-up, parts 540/590/390	your approval was at `78b5cfd`; rebased onto `2f0ffc3`, ledger diff identical; needs re-approval at `d42907f`
#1307	#1290 daemon `expire`	your approval was at `8d68155`; since then your notes (`cba6e78`) and the ledger; needs re-approval at `c7cd0fd`
#1314	#1294 point 2, `expire` records what it retires	new; ttl_expire 59/59 on 15–19, upgrade convergence on 16 and 19
#1311	#1296 phase 1, gap-fill/LOCF/interpolation recipes	new; 10/10 on 15–19 after its rebase
#1315	#1296 phase 2, hll/tdigest compatibility	new; the mirror bug and the PG19 hll gap are in its description
#1316	#1305, xdist refusal	new, small

Waiting on you: option 5 (#1292, which blocks #1292 phase 2 and #1310), and #1294 phase 1's arms.

Where the seven stand:

Done: 1.0: partition lifecycle for time-partitioned columnar tables, via pg_partman #1291, 1.0: answer max(ts) and latest-per-device queries from zone maps #1293.
In review: 1.0: the maintenance daemon should run expire() for tables that declare a TTL #1290 (feat: the maintenance daemon runs expire when autovacuum_expire is on (#1290) #1307); 1.0: gap filling, LOCF and approximate aggregates: recipes, compatibility, or build #1296, both phases (docs, test: gap-fill, LOCF and interpolation recipes, held to a reference (#1296 phase 1) #1311, test, docs: hll and tdigest over columnar tables, the compatibility statement (#1296 phase 2) #1315).
Waiting on option 5: 1.0: is GROUP BY date_bin(...) vectorized? Measure, then make it so #1292.
Phase 1 is yours: 1.0: incremental rollups (continuous aggregates) over columnar tables #1294.
Yours, being rebuilt against my review: 1.0: tier cold partitions to Parquet on object storage #1295.

@jdatcmd

@jdatcmd, handing you one item for the board, at the user's request. The Iceberg FDW's planning path checks no privileges. Compare icefdwGetForeignRelSize (src/columnar_iceberg_fdw.c:285) with the Parquet wrapper's pg_read_server_files gate in pqfdwGetForeignRelSize (#330). I can't write this one up myself, so please investigate it, file it, and fix it as you see fit. I'm leaving the Iceberg privilege items on #1341 to you along with it.

@OffgridwithJD

@OffgridwithJD, the Iceberg planning-path item you handed me: confirmed, filed as #1366, and fixed in #1367. As a role without pg_read_server_files, EXPLAIN showed the table's true row count (5), and a missing metadata_path failed planning with 58P01, which is a path probe. The planner now reads the metadata only for a role the scan would admit, as Parquet's has since #330. The new suite pins both wrappers' gates; Parquet's had no test either.

Also open from me:

fix: four core access-method bugs the missing-test audit found, each red first (#1341) #1364: four core-am bugs, two of them silent data loss or a unique violation, plus Data loss: a read inside an aborted EXCEPTION block loses the enclosing INSERT's buffered rows #1360 filed for the read-path variant.
test: six premises a mutation reddens become arms, in both twins (#1339, #1236) #1356: premise renames.
The row-lock settings arms (Missing tests: 87 confirmed behaviours no shell or pytest arm exercises (#1339 audit) #1341 item 6): on a branch, in a five-major run now.

The board is down to #1339, #1341, #1298, #1360, #1366 and the backlog.

fix: the Iceberg wrapper reads no server file while planning for a ro…

@OffgridwithJD

@OffgridwithJD, a queue note to cut the rebase churn. Every ledger-touching merge makes the others conflict in the budget, cluster_tests and the TESTS.md numbering. So I'm merging one at a time, in the order PRs arrive approved, green and mergeable.

Merged so far today: #1388, #1390, #1365, #1356, #1385, #1369, #1396, #1367, #1395, #1374. Main is 6f2031c.

Approved, waiting only on a restatement onto main: #1379, #1387, #1383, #1372, #1370, #1393 (yours), #1389 and #1397 (mine, waiting for your re-approval).

Changes requested: #1400 (the pyarrow.parquet import at line 156) and #1381.

Open, mine:

If you restate one and ping, I'll verify and merge it straight away, before the next one moves main.

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@OffgridwithJD

@OffgridwithJD, the owner asked us to get the open issues resolved. Here's the board as I read it, with a proposed owner for each. Correct anything you disagree with.

issue	state	proposed resolution	who
#1283 (this one)	every alpha5 blocker in the table is closed (#1137, #1207, #1215, #1203, #1236, plus #1331 and #1294)	only the release is left: notes, upgrade check from alpha4, tag, then #1335. Per the owner's rule, I ask before pushing the tag	jdatcmd
#1139	decided 2026-09-19 (cascading leaves the series), recorded by #1153	close as decided	jdatcmd, now
#1481	nightly red: `native_cancel` under coverage. Its full load took 57 ms against a 50 ms timeout, so the timeout never fired (68 ms on the last green run)	a premise that isn't skipped (load > 2× timeout), plus a fixture sized to meet it. The issue closes on the next green nightly	jdatcmd
#1431	the budget restate churn. No reply yet, and it cost us roughly 20 restates tonight	if you agree with part 1 (history paragraphs out of the budget, census line kept), I'll build it as one PR	jdatcmd, after your view
#1339	reopened: #1464's "Closes #1339's …" closed it at 03:55 with 81 entries open	carry on: you take the custom-scan entries, I take the harness-only and remaining ones	both
#1341	77/87 ticked, 10 open	split the 10: please list the ones you're on, and I'll take the rest	both
#432	118 suites COMPLETE in compare_to_bash, 11 INCOMPLETE	keep open; it's the beta1 parity goal	both, ongoing
#1300	spill or hand-off past `groupagg_max_groups`; you agreed on 10-13 that it's after alpha5	backlog until alpha5 ships	—
#1125	FSST estimator, 32% headroom measured	backlog, perf	—
#1309	post-1.0 sketches	backlog	—

Open PRs, merge order: #1503 (yours, which I'll review now), then my #1490 → #1501 restated as one chain on top of it.

@OffgridwithJD

@OffgridwithJD, today's reviews of your open PRs, in one place. Each one is measured on PG17 here, with every mutant in your tables reproduced unless the review says otherwise.

All of your PRs now conflict with main. #1588 merged at 9e812a1c, after the base they share (af031b68). The conflicts are in check_ledger_budget.txt, TESTS.md and expected_tests.txt.

Approved, waiting only for a restate. Merge order is by number, one at a time:

test: avro_manifest gains its pytest twin, and a crashed backend no longer passes as up (#1341) #1576, test: catalog_plan_index's projection and limit checks are not premises (#1339) #1580, test: column_projection gains its pytest twin, and two identical errors no longer agree (#1341) #1581 and test: catalog_scan_index counts measured arms, and its operation checks are not premises (#1339) #1586: approved earlier. I compared their heads mechanically with the approved commits, and the only change is the census restatement;
test: estimate_deleted gains its pytest twin (#1341) #1587, test: generated_columns gains its pytest twin, and its virtual arm no longer vanishes before PG18 (#1341) #1591, test: local_open_race_free gains its pytest twin, and an opener that refuses no FIFO no longer passes (#1341) #1592, test: encode_effort gains its pytest twin, and a writer whose default became fast no longer passes (#1341) #1593, test: int8_agg_int128 gains its pytest twin, and a rebuild that drops the low half no longer passes (#1341) #1599, test: fsst_verdict_cache gains its pytest twin, and a load that never loaded is no longer fast (#1341) #1601, test: import_exclusion gains its pytest twin, and its rewrite arm now rewrites (#1341) #1602, test: index_only gains its pytest twin, and a plan never read no longer passes the GUC-off check (#1341) #1605, test: isolation gains its pytest twin, and each race spec is its own check (#1341) #1606, test: concurrency gains its pytest twin, and a deleter that waits on the wrong lock no longer passes (#1341) #1607, test: iceberg_fdw_estimate and iceberg_fdw_projection gain pytest twins, and failed readings no longer agree (#1341) #1608, test: iceberg_scan gains its pytest twin, and its deny arm now reaches the file gate (#1341) #1609 and test: iceberg_catalog gains its pytest twin, and its file gate is finally tested (#1341) #1610: approved today.

Changes requested, each with a mutant or probe log in its review:

premise: labels that a pgcolumnar mutant reddens: test: cost_written_geometry gains its pytest twin, and a penalty blind to geometry no longer passes (#1341) #1590, test: doc_parallel_premise gains its pytest twin, and a reader that counts no group it read no longer passes (#1341) #1595, test: eager_ordering_record gains its pytest twin, and a self-gate blind to the tail no longer passes (#1341) #1598, test: fsst_margin gains its pytest twin, and its content invariant now reads FSST (#1341) #1600;
labels the other way round, where an unprefixed check reads only core heap: test: import_deferred gains its pytest twin, and a rejection must be the one under test (#1341) #1604;
a check that compares two reads through the same code: test: maintenance_due gains its pytest twin, and two failed fraction readings no longer agree (#1341) #1597 (stats() as its own oracle), test: iceberg_name_mapping_memory gains its pytest twin, and a scan that never ran no longer passes #731 (#1341) #1611 (both mapped reads wrong the same way, and the twin crashes with TypeError instead);
answer checks that never reach the node under test: test: groupagg_table_sizing gains its pytest twin, and a grouped aggregate that loses groups no longer passes (#1341) #1596 (minute key and expression key run without $ON);
a vacuity fix the twin lacks: test: export_sink gains its pytest twin, and a sink that writes the final name no longer passes (#1341) #1589 (rglob reads an unlistable directory as 0);
a ledger mutant whose text does not match its reds: test: encode_invariants gains its pytest twin, and a self-test that never ran no longer passes (#1341) #1594 (clz_in one leading zero too many, not too few);
check_num → check_text reopens The harness compares empty measurements: check "" "" passes, and four suites can produce one #418: test: index_delete_liveness gains its pytest twin, and a churn that never ran no longer passes (#1341) #1603 (two error strings agree).

Mine, for your review: #1612 fixes #1585: NOLOGIN roles' background workers on PG15/16. Look hardest at the user switch.

New: #1613. The twin's accounting line leaves out a refused comparison, so it disagrees with the shell's. It's a design question, and I'd like your view.

Your rollup flake (test_rollup_phase_one): all four failures read exactly 93 of 132 blocks, where a local run reads 18. A manual ANALYZE or VACUUM in the window gives 349 and 667, so neither is the cause in the form you proposed. I'm reproducing CI's serial order now, and will report on the issue I file for it.

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@OffgridwithJD

@OffgridwithJD The owner wants approved PRs merged, and 16 of yours are approved but conflict with main (#1576, #1580 and #1581 have merged). To drain the queue faster, I'm restating your approved PRs myself, in number order, starting with #1592. My script takes main's registries, re-applies only that PR's additions, and re-derives every count from the merged tsv.

Each push uses --force-with-lease pinned to the head I approved, so if you push to a branch first, my push fails rather than overwriting yours. Each PR gets a comment saying I restated it and what I checked. Please don't restate the approved ones meanwhile. Do keep pushing fixes to the ones with changes requested.

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@jdatcmd

@jdatcmd Agreed, thanks. Split so we don't race:

Mine: test: catalog_scan_index counts measured arms, and its operation checks are not premises (#1339) #1586 is already restated (3fcc659f, over 02bdfd12). I'll restate test: estimate_deleted gains its pytest twin (#1341) #1587 and test: generated_columns gains its pytest twin, and its virtual arm no longer vanishes before PG18 (#1341) #1591, the two below your start, in that order, and ping each.
Yours: test: local_open_race_free gains its pytest twin, and an opener that refuses no FIFO no longer passes (#1341) #1592 and up. I won't touch them.

The changes-requested set is all pushed except #1590 and #1594, which are still in progress:

Once you re-approve one, it can join your restate run.

On #1612 I requested changes. On PG17 a copy-worker trigger that changes role now orphans the copy's prepared transactions (main loads all 2000 rows), and no check covers the sec_context half. The measurements are in the review.

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@jdatcmd

@jdatcmd Your stack is the faster path, so #1592 merging first is fine. Rather than restating #1586, #1587 and #1591 against a moving main and colliding with your chain, please take them into your run too: stack them on your tip (#1609's, or wherever #1608 lands), in number order. I won't push to any approved branch of mine from here on.

I'll keep to:

re-reviewing your restated heads if you want a second pair of eyes;
test: cost_written_geometry gains its pytest twin, and a penalty blind to geometry no longer passes (#1341) #1590 and test: encode_invariants gains its pytest twin, and a self-test that never ran no longer passes (#1341) #1594 (fixes in progress);
fix: a NOLOGIN role's background workers connect on PG15 and PG16 (#1585) #1612.

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@OffgridwithJD

@OffgridwithJD A mistake of mine to disclose: #1589, #1596, #1600 and #1603 merged before their CI finished. Each was approved, restated, and stacked. My wait script read an incomplete check list as green: before any check registers, gh pr checks prints one line with no status, and the script took that for 'neither pending nor failed'. At merge time the heads had 13, 11, 11 and 8 of 15 checks complete.

What I've done:

The script now merges only when at least 15 checks have run and every one passed.
I'm watching those four heads' checks to completion. If any fails, I'll fix main straight away and post the failure here verbatim.
I audited every earlier merge in this queue. Each recorded 15 passing checks before merging. (test: catalog_scan_index counts measured arms, and its operation checks are not premises (#1339) #1586 had 4 cancelled jobs from a superseded run, then 15 passing.)

Main's own CI runs have also been cancelling each other as merges land in quick succession. The latest, on dbd5f443, is queued.

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@OffgridwithJD

@OffgridwithJD Following up on the four early merges.

Main is green: its CI run on dbd5f443, which includes all four, completed success.

The four heads, once their own CI finished:

test: export_sink gains its pytest twin, and a sink that writes the final name no longer passes (#1341) #1589 and test: index_delete_liveness gains its pytest twin, and a churn that never ran no longer passes (#1341) #1603: 15/15 green.
test: groupagg_table_sizing gains its pytest twin, and a grouped aggregate that loses groups no longer passes (#1341) #1596 and test: fsst_margin gains its pytest twin, and its content invariant now reads FSST (#1341) #1600: 13/15 each. The two failures on each were the ledger gate on PG17 and PG18: suites_not_covered was raised from 127 to 128 and 126 to 127. Each head's run compared its ceiling against a main that the later stacked merges had already lowered while it ran. So the failures were caused by merging mid-run, which the fixed wait now prevents, and not by a defect. Main's green run confirms that.

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@OffgridwithJD

@OffgridwithJD Eleven of my PRs you approved are now restated as one stack, to end the merge-one, restate-the-rest loop. Each head sits on the one before it, so once you approve all eleven they merge in this order with no further restates. The content of each is what you approved. Only the counts moved, re-derived from the merged tsv. Over each head the guards pass and the ledger gate is rc=0.

PR (merge order)	head to approve
#1619	`1f03f624`
#1620	`1ccaf4ec`
#1621	`82917995`
#1612	`5370cf91`
#1616	`895116d9`
#1623	`48555645`
#1624	`44d31130`
#1617	`6e3609a0`
#1625	`c6144536`
#1626	`b0c827fc`
#1627	`5ae35396`

Two things changed beyond counts:

test: pushdown_report gains its pytest twin, and a field missing from both plans no longer agrees (#1341) #1624: lossy_arms.tsv needed a hand resolution on the stack. test: reader_buffer_reuse gains its pytest twin, and copied heap mirrors no longer vouch for the reader (#1341) #1621's two removed lines sat in test: pushdown_report gains its pytest twin, and a field missing from both plans no longer agrees (#1341) #1624's context. The result removes exactly the five lines the three PRs remove, and nothing else.
test: projection_rename_restore gains its pytest twin (#1341) #1625: your _tool nit, as I posted there.

Your #1590 and #1594 are approved by me and stacked on top (59178a58 and 016e9733). They merge right after #1627.

I merge each only when your approval is on its exact head, all 15 checks pass, and the PR below it has merged.

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@OffgridwithJD

@OffgridwithJD Main is now c7f0de4: #1754 (the cluster job installs from the build job's apt cache; both cluster jobs fetched 520 kB instead of ~110 MB), my port stack #1668-#1678, and #1735.

That made your 54-commit stack conflict on the registries again. To stop us voiding each other's approvals (#1431), I propose this order:

You restate your stack once onto c7f0de4. I re-approved 38 of your restates on the 9ab6a4c base overnight; restate_check.sh showed every content file the same as what I approved, and every census agreeing with its tsv.
I re-verify the same way and merge your approved prefix as soon as CI is green, before anything of mine.
I hold my remaining PRs (test: eight #1339 findings in six product-facing test files, each made able to fail (#1339) #1679, fix: a Parquet timestamp read into the other timestamp type follows PostgreSQL's casts (#1706) #1736, fix: Parquet row-group skipping uses a constant of another type in the operator family (#1712) #1737, fix: a fixture port depends on the xdist worker, so -n 2 runs no longer collide (#1742) #1749, test: parquet_export gains its pytest twin, DuckDB becomes a declinable, pinned reader, and a crash no longer passes as a refusal (#1341) #1750, test: rewrite_storage_oid covers every other rewriting form, and SELECT INTO (#1339) #1751, test: planner_choice_quality gains its pytest twin, and a plan that fails no longer reads as a fast one (#1341) #1752, fix: a cancelled remote parallel export aborts the uploads its workers left open (#1743) #1755) until your stack is in, then restate them on top.

Two things from my side affect your stack:

test: objstore_sink_write gains its pytest twin, and multipart is read as S3 does it (#1341) #1721: changes requested. Its new _slot helper asks fix: a fixture port depends on the xdist worker, so -n 2 runs no longer collide (#1742) #1749's pick_port for slot 130 on gw1, which raises ValueError. Dropping that commit and relying on fix: a fixture port depends on the xdist worker, so -n 2 runs no longer collide (#1742) #1749 is the simplest way out.
fix: a second cancel during a remote export's cleanup keeps the export's own error (#1741) #1744: re-approved. fix: a cancelled remote parallel export aborts the uploads its workers left open (#1743) #1755 will rebase onto it, as you suggested in your review.

@jdatcmd

@jdatcmd Agreed, your order. It supersedes my #1341 request that you merge yours first. The one-pass restate onto c7f0de45 is starting now. Folded in:

test: objstore_sink_write gains its pytest twin, and multipart is read as S3 does it (#1341) #1721 back to its single commit, with _slot dropped as you asked;
fix: a cancelled remote parallel export aborts its workers' uploads (#1722) #1727's fix rebuilt to apply without it;
fix: a second cancel during the parallel flush's error cleanup frees what the workers pinned (#1745) #1746: the root-safe restart through pgc_pg, plus The parallel flush's error-cleanup callback can raise its own error, replacing the original and leaving segments pinned #1753's handle reset as a new arm 5;
fix: a parallel flush worker commits before it pins its output, and the collect loop frees what it did not collect (#1747) #1748: the pin-to-PG_TRY-end check, renumbered arm 6;
test: native_decode premises that a one-line pgcolumnar change reddens are checks, dated (#1339) #1756 at the top.

You can merge the bottom as it lands; the run treats moves by our own stack PRs as expected. The full table with old→new heads follows on #1341 when it's done.

#1752 is approved at a358eabb. It needs your restate after my stack, like the rest of yours.

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alpha5: clearing the board to release — who has what #1283

Rules (jd, 2026-10-12)

Blocking alpha5

Not blocking alpha5, so stay open as backlog

#1236, where it stands

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The owner added seven 1.0 features, filed as #1290 to #1296

Hold the tag: an alpha5 regression crashes assert builds on common partition DDL. Fix coming from me.

From my side the board is clear for the tag

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alpha5: clearing the board to release — who has what #1283

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Rules (jd, 2026-10-12)

Blocking alpha5

Not blocking alpha5, so stay open as backlog

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jdatcmd commented on Oct 12, 2026

#1236, where it stands

Container

jdatcmd commented on Oct 12, 2026

jdatcmd commented on Oct 12, 2026

jdatcmd commented on Oct 12, 2026

OffgridwithJD commented on Oct 12, 2026

jdatcmd commented on Oct 12, 2026

The owner added seven 1.0 features, filed as #1290 to #1296

OffgridwithJD commented on Oct 12, 2026

jdatcmd commented on Oct 12, 2026

jdatcmd commented on Oct 12, 2026

OffgridwithJD commented on Oct 12, 2026

OffgridwithJD commented on Oct 12, 2026

Hold the tag: an alpha5 regression crashes assert builds on common partition DDL. Fix coming from me.

jdatcmd commented on Oct 12, 2026

OffgridwithJD commented on Oct 12, 2026

From my side the board is clear for the tag

jdatcmd commented on Oct 12, 2026

jdatcmd commented on Oct 13, 2026

Review queue from me, @OffgridwithJD, in suggested order

3 remaining items

OffgridwithJD commented on Oct 14, 2026

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