3.1.4 Release Notes

[morrySnow]

New Features

Query Engine

• Support Dereference Expressions #58550

Data Lake & External Catalogs

• Catalog supports loading credentials via AwsCredentialsProviderChain #59054
• Support passing credentials_provider_type to BE for S3 access #59158
• Support Elasticsearch flatten data type #58793

Observability & Audit

• Support encrypting SQL statements stored in audit logs #58508
• QueryPlanAction supports writing SQL from table query plans into audit logs #59121
• Generate SQL Digest for statements parsed by Nereids #59215

---

Optimizations & Improvements

Query Engine

• Adjust type inference and coercion behavior to improve expression consistency #57961
• Prevent analysis tasks from polluting column statistics cache, improving statistics accuracy #58742
• Improve execution of queries with multiple DISTINCT aggregate functions #58973
• Optimize Join / Set / CTE / predicate pushdown rules to avoid unnecessary plan complexity
  #58664, #59141, #59151

Data Lake & External Catalogs

• Accelerate Hive partition pruning and write performance, significantly reducing write latency for large partitioned tables
  #58886, #58932
• Iceberg supports ignoring dangling deletes to improve COUNT pushdown #59069
• Enhance Iceberg REST Catalog connectivity checks and network timeout handling
  #58433, #58434
• Align Paimon incremental query behavior with Spark in single-snapshot scenarios #58253

Doris Cloud (Compute-Storage Separation)

• Support dynamically updating tablet rebalancer configuration to improve operational flexibility in cloud environments #58376
• Optimize TopN queries in compute-storage separation scenarios to avoid unnecessary remote broadcast reads
  #58112, #58155
• Improve tablet performance consistency during upgrade processes, reducing hotspot risks #58247
• Make File Cache adaptive during Schema Change to reduce cache impact for large tables #58622
• Add download wait time metrics to query profiles to improve IO observability #58870
• Enhance File Cache debugging capabilities with LRU dump support #58871

Security & Stability

• Enforce HTTPS for Glue Catalog to improve external catalog security #58366
• Add SSRF validation for Create Stage #58874

---

Bug Fixes

Query Engine

• Fix potential infinite loops triggered by TopN / Limit / Join rules in specific scenarios #58697
• Fix logic errors in aggregation, window functions, Repeat, and type conversion
  #58080, #58114, #58330, #58548

Materialized Views (MV)

• Disallow creating invalid materialized views with value column predicates on MOW tables #57937

Data Ingestion

• Fix undefined behavior caused by multiple invocations of the JSON Reader, preventing potential data corruption #58192
• Fix incorrect behavior related to COLUMNS FROM PATH in Broker Load
  #58351, #58904
• Fix abnormal behavior of Group Commit when nodes are offline or decommissioned #59118
• Fix failures in Load / Delete / Partial Update under specific edge conditions #58553, #58230, #59096

Doris Cloud (Compute-Storage Separation)

• Fix stability issues in compute-storage separation scenarios, including Tablet Drop, Compaction, and slow initial startup
  #58157, #58195, #58761
• Fix crashes and resource leaks in File Cache under abnormal conditions or BE failures
  #58196, #58819, #59058
• Fix abnormal read behavior caused by uncleared Segment Footer Cache after compaction #59185
• Fix failures when executing Copy Into with ORC / Parquet formats #58551

[xuelangos]

3.1.3 如何升级到 4.0.0