Release 3.1.3

New Features

Storage & Filesystem

• Upgrade libhdfs to 3.4.2 (#57638)
• Add TotalGetRequestTime profile metric to S3 reader (#57636)

Catalog

• Support MaxCompute catalog (project-schema-table) (#57286)
• Support retrying original SQL after error when execute dialect sql (#57498)
• Support Azure Blob Storage (#57219)

Cloud Mode

• Support balance sync warm-up (#57666)
• Support peer BE cache read in same cluster (#57672)

SQL Engine & Planner

• Check SQL regex block rule before plan phase (#57706)

Functions

• Enhance EXPLODE function with struct-type support (#57827)

Optimizations

Query Execution & Planner

• Optimize variant cast when only NULL values (#57161)
• Optimize FROM_UNIXTIME performance (#57573)
• Improve graceful shutdown behavior and query retry (#57805)

Storage & Compaction

• Make read slice size configurable (MergeIO) (#57159)
• Add score threshold for cold data compaction (#57217)
• Add configurable threshold for small memory task protection (#56994)
• Improve jemalloc configuration to reduce page faults (#57152)

Cloud Mode

• Expose cloud balance metrics (#57352)
• Optimize create warm-up job logic (#57865)
• Enhance warm-up job and peer read efficiency (#57554, #57807)

Index & Search

• Add custom analyzer support (char_filter, basic & ICU tokenizer) (#57137)
• Support builtin analyzer names in custom analyzer (#57727)

Bug Fixes

Storage & File I/O

• Fix segcompaction coredump when adding key column (#57212)
• Fix Parquet RLE_DICTIONARY decode performance issue (#57614)
• Fix schema change expr cache misuse (#57517)
• Replace tablet report with ForkJoinPool (#57927)

Cloud Mode

• Fix cloud pipeline task number calculation (#57261)
• Fix rebalance residual metrics cleanup (#57438)
• Skip tablet report when rebalance not inited (#57393)
• Fix domain user default cluster report error (#57555)
• Fix wrong private endpoint config (#57675)
• Fix peer read bugs and thread handling (#57910, #57807)
• Fix filecache metrics and microbench issues (#57535, #57536)

Catalog

• Fix MaxCompute predicate pushdown null pointer (#57567)
• Fix Iceberg client.region and REST credentials issues (#57539)
• Fix Iceberg catalog NPE and query error (#57796, #57790)
• Fix Paimon S3 prefix unification and configuration (#57526)
• Fix JDBC catalog compatibility for zeroDateTimeBehavior (#57731)
• Fix Parquet schema analysis error (#57500)
• Fix Parquet all row groups filtered issue (#57646)
• Fix CSV reader wrong result when escape equals enclose (#57762)
• Prevent removing catalog from refresh queue (#57671)
• Fix max_meta_object_cache_num must > 0 config (#57793)

SQL Engine & Planner

• Fix constant folding of FROM_UNIXTIME with decimal literal (#57606)
• Fix MV rewrite fail with group sets and filter (#57674)
• Fix prepare statement stage only explain SQL (#57504)
• Release physical plan in Profile.releaseMemory() (#57316)
• Fix aggregation elimination error when group sets exist (#57885)
• Fix LargeInt overflow on max_value+1 (#57351)
• Fix decimal256 overflow when casting to float (#57503)

Networking & Platform

• Fix MySQL SSL unwrap infinite loop (#57599)
• Disable TLS renegotiation in MySQL (#57748)
• Fix unaligned uint128 constructor (#57430)
• Fix JNI local/global ref leak (#57597)
• Make Scanner.close() thread-safe (#57644)
• Fix exchange coredump due to nullptr (#57698)

Chores & Infrastructure

• Deprecated LakeSoul external catalog (#57163)

Summary

Apache Doris 3.1.3 brings major improvements in:

• Storage compatibility (Azure Blob, Hadoop 3.4.2, S3 metric support)
• Cloud performance and reliability (warm-up, rebalance, peer cache)
• SQL planner stability
• Dependency modernization and security hardening

This release greatly enhances stability, performance, and cloud-native integration across hybrid data environments.