Apache Doris 1.0 Release: New Vectorized Engine, Hive External Tables, Z‑Order Indexing and More

Apache Doris (incubating) officially released version 1.0 on April 18, 2022, marking the first major release since entering the Apache Incubator. The release involved over 114 contributors who submitted more than 660 optimizations and fixes.

Key new features in the 1.0 version include:

Vectorized execution engine that replaces the row‑based Volcano model, improving CPU cache affinity, enabling batch‑level type checking, and allowing compiler inlining and SIMD optimizations.

Hive external table support, allowing direct querying of Hive tables without data import.

Lateral View syntax with Table Functions (e.g., explod_bitmap , explode_split , explode_json_array ) to expand bitmap, string, or JSON array columns into multiple rows.

Z‑Order data indexing to accelerate non‑prefix column queries.

Integration with Apache SeaTunnel (incubating) for high‑performance data synchronization and ETL across multiple sources.

New bitmap functions such as bitmap_max , bitmap_and_not , bitmap_and_not_count , bitmap_has_all , bitmap_and_count , bitmap_or_count , bitmap_xor_count , bitmap_subset_limit , and sub_bitmap .

Support for Chinese national cryptographic algorithms SM3/SM4.

Performance improvements include setting set batch_size = 4096 and enabling the vectorized engine with set enable_vectorized_engine = true , which yields up to 3× speedup on SSB and 2.6× on OnTime benchmark suites. Additional optimizations reduce segment file count during bulk loads, lower BRPC serialization overhead, improve memory usage for INSERT INTO , and enhance fault tolerance of imports.

Significant bug fixes address query errors, Broker Load scheduling issues, STREAM keyword metadata loading, decommission failures, schema change errors, and BE crashes caused by certain string types.

Upgrade instructions: users can upgrade directly from Apache Doris 0.15.0 or any 0.15.x release to 1.0 by following the documentation at http://doris.apache.org/zh-CN/installing/upgrade.html . Detailed release notes are available at https://github.com/apache/incubator-doris/issues/8549 .

The community thanks over 300 contributors from companies such as Baidu, Meituan, Xiaomi, JD, ByteDance, Tencent, NetEase, Alibaba, PingCAP, and Nebula Graph for their extensive work on the release.

For feedback or issues, users are encouraged to join the GitHub Discussions forum ( https://github.com/apache/incubator-doris/discussions ) or contact the developer mailing list at [email protected] .