Zero-ETL elastic-grade search over remote data (Parquet, Iceberg, JSON)

v26.05.3 Feature

This release adds 8 notable features for engineering teams evaluating rollout.

Published 22d Search Engines

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Topics

analytics bm25 clickhouse c++ database dbms

+8 more

duckdb elasticsearch olap postgresql relational-database search-engine search-engines sql

ReleasePort's take

Light signal

editorial:auto 13d

v26.05.3 fixes eight data races across transactions, catalog, notices, and Iceberg operations; patch if you run concurrent multi-threaded workloads. Debuts geospatial S2 search, TRUNCATE command, and new DDL features.

Why it matters: Data races in core concurrent operations risk state corruption under multi-threaded loads; patch now for affected deployments. Geospatial search and new DDL support enable additional analytics use cases.

Summary

AI summary

Added composite type, GEO S2 search support, offsets for topK case, sequences, truncate command, synonyms tokenizers, parallel sink for inverted index backfill, and CREATE INDEX progress reporting.

Changes in this release

Type	Severity	Summary	CVE
Feature
Feature	Medium	Geospatial S2 search support is now available. Geospatial S2 search support is now available. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Synonym-aware tokenizers are now available. Synonym-aware tokenizers are now available. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Inverted index backfill uses parallel sink optimization. Inverted index backfill uses parallel sink optimization. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Text search is now supported inside ANN queries. Text search is now supported inside ANN queries. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	TRUNCATE command is now supported. TRUNCATE command is now supported. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	WAND optimization is enabled for inverted indexes. WAND optimization is enabled for inverted indexes. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Composite type support can now be created. Composite type support can now be created. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	Database sequences can now be created. Database sequences can now be created. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	TopK queries now support offset parameters. TopK queries now support offset parameters. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Medium	CREATE INDEX progress is surfaced via pg_stat_progress_create_index. CREATE INDEX progress is surfaced via pg_stat_progress_create_index. Source: llm_adapter@2026-05-21 Confidence: low	—
Feature	Low	GEO S2 search support added. GEO S2 search support added. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Feature	Low	Synonym tokenizers added. Synonym tokenizers added. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Bugfix
Bugfix	Medium	Data race in transaction Ensure/Add/Get operations fixed. Data race in transaction Ensure/Add/Get operations fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Unnecessary catalog snapshot drops on every statement eliminated. Unnecessary catalog snapshot drops on every statement eliminated. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	LogicalType mutation bug in PgSqlType constructor fixed. LogicalType mutation bug in PgSqlType constructor fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Blocked task wakeups in pg_comm_task are now preserved. Blocked task wakeups in pg_comm_task are now preserved. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Data race in catalog rename operations is fixed. Data race in catalog rename operations is fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Data race in notice addition and retrieval fixed. Data race in notice addition and retrieval fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Sequence resource leak is fixed. Sequence resource leak is fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	Iceberg multi-threaded execution race conditions are fixed. Iceberg multi-threaded execution race conditions are fixed. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	SendAsync close correctly uses asio_ns::dispatch. SendAsync close correctly uses asio_ns::dispatch. Source: llm_adapter@2026-05-21 Confidence: high	—
Bugfix	Medium	User type bugs are fixed. User type bugs are fixed. Source: llm_adapter@2026-05-21 Confidence: low	—
Bugfix	Medium	User type issues corrected. User type issues corrected. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—
Bugfix	Medium	IRESEARCH usage example fixed. IRESEARCH usage example fixed. Source: granite4.1:30b@2026-05-23-audit Confidence: low	—

Full changelog

Docker image: https://hub.docker.com/r/serenedb/serenedb/tags?name=26.05.3

What's Changed

feat: Add composite type by @pashandor789 in https://github.com/serenedb/serenedb/pull/602
Update README.md for PostgreSQL references by @gnusi in https://github.com/serenedb/serenedb/pull/629
feat: GEO S2 search support by @Dronplane in https://github.com/serenedb/serenedb/pull/575
Fix iceberg multi-threaded execution by @codeworse in https://github.com/serenedb/serenedb/pull/632
feat: Add offsets for topK case by @gnusi in https://github.com/serenedb/serenedb/pull/626
Support text search inside ann query by @codeworse in https://github.com/serenedb/serenedb/pull/634
feat: Enable wand for inverted index by @gnusi in https://github.com/serenedb/serenedb/pull/573
feat: Add sequences by @pashandor789 in https://github.com/serenedb/serenedb/pull/604
fix: Fix user type by @MBkkt in https://github.com/serenedb/serenedb/pull/637
fix: iresearch usage example by @mkornaukhov in https://github.com/serenedb/serenedb/pull/640
feat: Add truncate by @pashandor789 in https://github.com/serenedb/serenedb/pull/617
fix: Fix SendAsync Close to use asio_ns::dispatch by @MBkkt in https://github.com/serenedb/serenedb/pull/641
fix: Sequences leak by @pashandor789 in https://github.com/serenedb/serenedb/pull/642
feat: Add synonyms tokenizers by @gnusi in https://github.com/serenedb/serenedb/pull/644
Update readme by @gnusi in https://github.com/serenedb/serenedb/pull/648
fix: data race in catalog rename by @MBkkt in https://github.com/serenedb/serenedb/pull/649
fix: don't mutate shared LogicalType alias in PgSqlType ctor by @MBkkt in https://github.com/serenedb/serenedb/pull/653
fix: data race in transaction Ensure/Add/Get by @MBkkt in https://github.com/serenedb/serenedb/pull/650
fix: don't drop catalog snapshot on every statement by @MBkkt in https://github.com/serenedb/serenedb/pull/651
fix: don't lose blocked-task wakeup in pg_comm_task by @MBkkt in https://github.com/serenedb/serenedb/pull/652
feat: parallel sink for inverted index backfill by @MBkkt in https://github.com/serenedb/serenedb/pull/654
feat: surface CREATE INDEX progress via pg_stat_progress_create_index by @MBkkt in https://github.com/serenedb/serenedb/pull/655
fix: data race in AddNotice/StealNotices by @MBkkt in https://github.com/serenedb/serenedb/pull/660

Full Changelog: https://github.com/serenedb/serenedb/compare/v26.05.2...v26.05.3

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Zero-ETL elastic-grade search over remote data (Parquet, Iceberg, JSON)

ReleasePort's take

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