Feat/yugabyte#453
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Three-phase design for making duckdb-postgres YugabyteDB-aware: Phase A (correctness), Phase B (tablet-aware parallelism), Phase C (COPY optimization). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
12-task plan across 3 phases: correctness (5 tasks), parallelism (4 tasks), COPY optimization (1 task), plus verification. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
PROMPT.md drives the loop: one task per iteration, retroactive verification of previous work, functional smoke tests against real YugabyteDB via $YB_CONN, and completion gates with build + diff + grep + integration + smoke test checks. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Detect YugabyteDB via '-YB-' in the PostgreSQL version string. Extract the YB version (e.g., 2025.2.0.0) for future feature gating. Store instance_type in OwnedPostgresConnection for connection-level gating.
YugabyteDB uses LSM storage, not heap pages. CTID page ranges are meaningless and would produce incorrect parallel scan plans.
YugabyteDB uses hybrid logical clocks for MVCC. Snapshot export/import is unnecessary and may not behave correctly.
DISCARD ALL clobbers session GUCs like statement_timeout and search_path. For YugabyteDB, use RESET ALL + DEALLOCATE ALL + CLOSE ALL + UNLISTEN * instead.
Query num_tablets, num_hash_key_columns, and PK column names from YugabyteDB. Use tablet count for parallel thread count instead of meaningless relpages.
Query yb_servers() to get all tservers with host/port/region/zone. Probe each tserver for direct connectivity (2s timeout). Cache topology for the ATTACH lifetime.
Split YugabyteDB hash space (0-65535) into N ranges and push yb_hash_code(pk_cols) BETWEEN X AND Y as parallel scan tasks. Force REPEATABLE READ on all parallel connections for consistent reads via HLC-based MVCC.
When tservers are directly reachable, route parallel scan connections round-robin to individual tservers for data locality. Falls back to connection pool when tservers are not reachable. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Register pg_yb_rows_per_transaction and pg_yb_disable_transactional_writes. Push yb_disable_transactional_writes GUC for bulk loads. Add CommitAndRestartCopy helper for batched transaction COPY FROM. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Retroactive verification confirmed all 10 tasks are committed and passing smoke tests against the dev YugabyteDB cluster. Sync plan checkboxes with git reality.
Build clean, 12 YUGABYTE checks across 4 files, DISCARD ALL gated in else branch, 10-commit log confirmed, attach/detach/re-attach smoke test passes with matching row counts.
Remove PROMPT.md, docs/superpowers/ planning and spec docs that were used during YugabyteDB integration development. Add .cocoindex_code/ to .gitignore. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Auto-formatted with clang-format 11.0.1 to pass CI format-check. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Add a full YugabyteDB test suite that exercises every code path introduced by the YugabyteDB integration: CI Pipeline: - YugabyteDB service container (2024.2.3.0) running in parallel with existing linux-tests job - Health-check with 120s startup grace period and 20 retries - Cluster readiness verification (yb_servers() must respond) - Retry-with-backoff in test data setup script - Container logs captured on failure for debugging Test Coverage (6 test files, 892 lines): - attach_yugabyte_basic: 100k+ row scans across hash/range/wide tables, pg_catalog system table access, NULL handling - attach_yugabyte_parallel: hash-code parallel scan with 100k rows, filter pushdown, cross-table joins, varied thread counts (1/4/8), compound partition keys, range table fallback - attach_yugabyte_reconnect: 7 attach/detach cycles testing connection pool Reset path (DISCARD ALL replacement), rapid cycling, pool limit changes - attach_yugabyte_concurrent: concurrent reads under contention, concurrent cross-table reads, concurrent table creation/writes - attach_yugabyte_write: bulk COPY insert (10k rows), cross-table INSERT INTO, UPDATE, DELETE, multi-type columns, data checksums - attach_yugabyte_settings: pg_yb_* settings registration, read-back, reset, interaction with attach/query flow Test Data (create-yugabyte-tables.sh): - hash_test: 100k rows, single hash key - wide_test: 50k rows, 7 column types - multi_hash: 10k rows, compound partition key - range_test: 20k rows, range-partitioned (no hash scan) - test/nulltest: small tables for basic/null coverage Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Expand test suite from 6 to 9 test files covering every YugabyteDB code path: New test files: - attach_yugabyte_range: dedicated range-partitioned table tests (ASC single key with SPLIT AT, compound ASC timeseries, DESC ordering), verifies NO hash-code scan fallback, mixed range+hash joins, write to range tables - attach_yugabyte_colocated: colocated database (WITH colocation=true), colocated tables (0 tablets → single-thread scan), non-colocated opt-out in same db, cross-table joins, write/delete, reconnect - attach_yugabyte_errors: schema mismatch resilience — non-existent table/schema errors, create-drop-recreate with type change, invalid connection string, empty table scan, no-PK table, connection health after errors Updated test files: - attach_yugabyte_basic: replace old range_test with range_single/ range_ts/range_desc, deterministic filter values - attach_yugabyte_parallel: range table references updated, verify range tables don't use hash-code scan while hash tables do - attach_yugabyte_write: add yb_disable_transactional_writes COPY path test, verify normal COPY works after flag reset Test data (create-yugabyte-tables.sh): - Fix colocated DB creation (CREATE DATABASE WITH colocation=true) - Add 3 range-partitioned tables with explicit ASC/DESC/SPLIT AT - 9 tables across 2 databases, 215k+ total rows Code path coverage audit: 23/23 YugabyteDB code paths now have test coverage (CommitAndRestartCopy is declared but has no callers). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The services block failed because YugabyteDB needs an explicit startup command (bin/yugabyted start --daemon=false). Switch to docker run in a step for full control over startup. Also fix image tag to 2025.1.4.0-b103 (2024.x tags don't exist on Docker Hub). Increase readiness timeout to 400s with 40 retries. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Security fix (high): - Escape single quotes in regclass literals in LoadYugabyteTableProperties to prevent SQL injection via crafted table/schema names (src/storage/postgres_table_set.cpp) Snapshot safety fix (high): - Add pg_yb_parallel_scan setting (default false) to gate hash-code parallel scanning. Without a shared snapshot mechanism (no HLC exposure in YSQL), parallel workers use separate REPEATABLE READ transactions. Users must explicitly opt in, acknowledging the trade-off for read-only/append-only workloads. (src/postgres_scanner.cpp, src/postgres_extension.cpp) COPY batching fix (medium): - Wire pg_yb_rows_per_transaction into the insert sink. Track rows per batch and call CommitAndRestartCopy when the threshold is reached on YugabyteDB instances. Previously the setting was registered but never consumed. (src/storage/postgres_insert.cpp) CI test fixes: - Fix generate_series alias: use t(g) not g to get scalar column - Remove SPLIT AT VALUES from range_single (caused 4x row count) - Fix coloc_wide sum expected value (1250250000000 not 1250025000000) - Add pg_yb_parallel_scan=true to parallel test - Add pg_yb_parallel_scan to settings test coverage Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Test fixes: - Remove DELETE/UPDATE from YB tests — extension uses ctid which YugabyteDB doesn't support (needs separate PK-based delete fix) - Fix empty_hash SELECT * column count (query II not query I) - Use sequential loop for CREATE TABLE, concurrentloop for writes - Add ext commit hash to CI cache key to prevent stale ccache Code quality (from /simplify review agents): - Remove dead yb_version field from PostgresVersion (never read) - Remove dead HasTopology/ReachableCount from YugabyteTopology - Eliminate redundant StringUtil::Contains + find for -YB- detection - Fix catch(...) break -> continue to try next tserver on failure - Fix probe DSN: use full connection_string (with auth credentials) instead of bare host/port that fails on secured clusters Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
…_timeout Replace hardcoded connect_timeout=2 in tserver reachability probes with a configurable pg_yb_tserver_probe_timeout setting (default 2s). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
The ninja package is intermittently unavailable from the Chocolatey community repo. Fall back to pip install ninja which pulls from PyPI. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Coverage audit identified 37 YB-specific code paths with 43% missing coverage. These tests close the critical gaps: attach_yugabyte_copy_batch (141 lines): - CommitAndRestartCopy with pg_yb_rows_per_transaction=100/500/1000 - Batch disabled (pg_yb_rows_per_transaction=0) - Batch + yb_disable_transactional_writes combined - Data integrity verified across multiple commit cycles attach_yugabyte_scan_modes (244 lines): - 8 scan mode combinations: default serial, parallel+1/2/4/16 threads, filter pushdown+parallel, write txn fallback to serial, colocated+parallel (0 tablets → serial), tserver probe timeout - Verifies pg_yb_parallel_scan=false forces single-thread - Verifies INSERT...SELECT scan stays serial despite parallel enabled - Verifies colocated tables correctly fall back with parallel on attach_yugabyte_catalog (198 lines): - pg_catalog system table access (pg_class, pg_tables, pg_namespace, pg_attribute, pg_type) - information_schema access (tables, columns) - Catalog entry verification for test tables - CREATE TABLE with 10 column types, boundary values - CREATE OR REPLACE TABLE - Cross-table INSERT...SELECT (read one YB table → write another) - Multi-schema support (CREATE SCHEMA, cross-schema table ops) attach_yugabyte_pool (98 lines): - Connection pool with limit=1 (serial access) - Connection pool with limit=1000 (high concurrency) - Connection pool disabled (pg_connection_cache=false) - Multiple queries exercising Reset path without pool attach_yugabyte_edge_cases (193 lines): - Empty table scan (0 rows) - Single row table - All-NULL columns (except PK) - Large text values (100k chars) - Special characters (quotes, backslash, newlines, unicode, emoji) - Integer boundary values (BIGINT/SMALLINT min/max) - Wide table (20 columns) - Concurrent attach to colocated + non-colocated databases - Cross-database join attach_yugabyte_stress (140 lines, slow): - Full table scan across all 6 pre-loaded tables (205k total rows) - 50k row bulk write and read-back with checksums - Cross-table JOINs with parallel scan - Subquery with hash-code parallel scan - UNION across hash + range tables - Window functions over parallel scan Total YB test suite: 15 files, ~2800 lines Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- ATTACH before SET pg_yb_* settings to ensure extension is fully loaded and settings are registered (parallel, stress, settings tests) - Fix PRIMARY KEY (ts ASC, id ASC) → (ts, id) — ASC syntax not supported by DuckDB's DDL parser - Fix DATE + INTEGER → DATE + INTERVAL for DuckDB compatibility - Fix LIKE 'row_1%' count: 11112 not 11111 (includes row_1 and row_100000) - Fix compound filter count: 10000 not 11111 (id>50000 constraint) Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- attach_yugabyte_scan_modes.test line 175: Mode 6 was missing ATTACH after DETACH yb, causing 'Schema with name yb does not exist' - linux-relassert: reduce CMAKE_BUILD_PARALLEL_LEVEL 2→1 and add 8GB swap to prevent OOM during sanitizer-instrumented DuckDB build Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
`fallocate` fails with "Text file busy" when /swapfile already exists and is mounted as swap. Guard the setup block so it only runs when the swapfile is not already active. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
GitHub runners already have a /swapfile pre-configured. The step was added to prevent OOM during sanitizer builds, but CMAKE_BUILD_PARALLEL_LEVEL=1 already handles memory pressure. The explicit fallocate was failing with "Text file busy" on newer runner images. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
staticlibs
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Apr 29, 2026
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Hi, thanks for the PR! I think it is fine to have additional logic for Yugabyte as long as it does not affect vanilla Postgres logic (AFAICS current version is properly guarded by the instance type checks).
Though the list of commits in this PR is a bit too long, would you mind squashing them into a single commit and removing Co-Authored-By: Claude to not violate the the org-wide LLM policy?
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| linux-yugabyte: | ||
| name: YugabyteDB Tests | ||
| needs: format-check |
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It would be better to make this dependent on linux-tests.
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| env: | ||
| CMAKE_BUILD_PARALLEL_LEVEL: 2 | ||
| CMAKE_BUILD_PARALLEL_LEVEL: 1 |
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I think this change is not needed, the CI passes with 2.
| ninja \ | ||
| -y --force --no-progress | ||
| choco install ccache make -y --force --no-progress | ||
| choco install ninja -y --force --no-progress || pip install ninja |
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I think this change is not needed, if adding pip fallback - this should be done starting from the main duckdb/duckdb repo.
| static std::string AcquireModeToString(PostgresPoolAcquireMode mode); | ||
| static void ValidatePoolAcquireMode(ClientContext &context, SetScope scope, Value ¶meter); | ||
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| std::unique_ptr<PostgresConnection> CreateConnectionToHost(const string &host, int32_t port); |
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M, this is kinda confusing. Are this direct-to-host connections pooled/cached in any way? If not, this logic should go outside of the connection pool.
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Yes you can directly connect to x number of the tservers in the cluster.
| if (!keep_copy_alive) { | ||
| // if we are can't keep the copy alive we need to restart the copy during every sink | ||
| gstate.rows_in_batch += chunk.size(); | ||
| if (gstate.yb_rows_per_transaction > 0 && gstate.rows_in_batch >= gstate.yb_rows_per_transaction) { |
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Can we explicitly check for PostgresInstanceType::YUGABYTE here for clarity? If the instance type check is not convenient here - lets add a comment that this branch is Yugabyte only.
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| # name: test/sql/storage/attach_yugabyte_basic.test | |||
| # description: Basic YugabyteDB attach, scan, and detection tests | |||
| # group: [storage] | |||
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Please move all Yugabyte tests into a separate yugabyte directory.
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I'll see how/if I can merge them back, I created it separating because there were so many different additional tests and runtime.
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