Project Antalya Roadmap 2026

[svb-alt]

Here's the current Project Antalya roadmap for 2026. This year the focus is on direct writes to Iceberg, improved usability of the swarms and Hybrid table engine, and interoperability with regard to cloud providers and catalog types. All features are open source--there are no hold-backs.

Please suggest additional features and ideas in the comments to this issue. We also welcome contributions.

Make Iceberg a first-class citizen in ClickHouse

• CREATE TABLE for Iceberg/DataLakeCatalog database engine using 'AS <other_table>' syntax. It should respect table structure, partitioning and ordering of MergeTree table if given
• DROP TABLE for Iceberg/DataLakeCatalog database engine
• TRUNCATE TABLE for Iceberg/DataLakeCatalog database engine #1529
• Map specific catalog namespaces as Iceberg databases #1337
• ALTER TABLE EXPORT PARTITION ALL to Iceberg/DataLakeCatalog

Swarms:

• Fully supported joins
• Standalone swarms
  • Remote initiator improvements #1577
• Swarm for writes
• Swarm for merges/optimize

Tiered Storage:

• Write MergeTree parts/partitions to Parquet
  • Accept table function as destination for part export #1320
  • Allow materialized / alias columns to be exported through part export #1324
  • Add setting to define filename pattern for part exports #1490
  • Export partition support for replicated MT engines #1124
  • Improvements to partition export #1402
• Write MergeTree parts/partitions directly to Iceberg
• Improve observability
  • Add query id to system.part_log, system_exports and system.replicated_partition_exports #1330

Hybrid table engine

• Support for ALIAS columns #1272
• ALTER TABLE for manual watermark management
• Automatic watermarks
• Direct exports to Iceberg
• TTL MOVE to Iceberg
• TTL DELETE for Iceberg data

Catalogs & Interoperability:

• ARN access to Glue #90825
• BigLake support #97104
• GCP support
  • Google cloud storage support for data lakes catalogs ClickHouse/ClickHouse#93866
• Azure support
• Interoperability with Spark
• Iceberg v3
• Confirming Antalya features for Unity

Performance & observability:

• Parquet RowGroup adaptive size
• Lazy metadata loading
• Tools to analyze Iceberg queries performance
• Expose extended Iceberg/Parquet metadata via system tables

Security:

• OAuth Implementation #1078
• Support for EC JWT validation #1596
• Access to catalogs via OAuth

[Korg95]

Hi team, wondering which quarter are we planning to implement iceberg v3 support.