starrocks

Release date: June 5, 2026

Behavior Changes

• SHOW statements are now allowed inside explicit transactions. #72954
• get_json_string now respects ALLOW_THROW_EXCEPTION when handling JSON parsing errors. #73199
• IGNORE NULLS is now preserved in view definitions when the window function argument is an expression. #69971
• Ranger row filter and masking policies are now correctly applied to Hive views and to base tables expanded from Hive view definitions. #73265
• Hive partition statistics are no longer automatically refreshed per partition. Existing cached stats are preserved while a table-level asynchronous refresh updates the cache in batches. #73563

Improvements

• Supports caching Java UDAF class-level initialization so shared UDAFs can reuse loaded classes and generated stubs across aggregator and window-function instances. #72038
• Supports Paimon time types and improves Paimon materialized view handling. #58292
• Added an Avro schema cache for shadowed PartitionData during partition load. #72215
• Added a configurable FE write timeout mysql_send_packet_timeout_ms for the MySQL result send path to prevent indefinitely blocked result sending to slow clients. #73646
• Optimized CatalogRecycleBin adjusted recycle timestamp lookup. #72128
• Reduced metadata and lock overhead in load balancing, compaction scheduling, consistency checks, and StarMgr metadata synchronization paths. #73555 #72218 #72178 #72108
• Improved diagnostics for filesystem copy failures and Parquet broker load errors by surfacing the underlying cause and file/column/row context. #73414 #73236
• Reduced external catalog and information schema metadata overhead by deferring JDBC REMARKS fetching, avoiding redundant Paimon snapshot lookups, and pushing down table_name predicates for information_schema.tables_config. #73488 #72892 #73210
• Simplified the scalar-function merge implementation by using merge() directly. #69575

Bug fixes

The following issues have been fixed:

• Empty ALTER TABLE statements could be parsed as OPTIMIZE clauses, and replaying malformed OPTIMIZE jobs could clear a table's default distribution. #73352
• Decimal-valued unit counters in runtime profiles could cause query progress parsing failures and noisy FE warnings. #73683
• Concurrent SegmentFlushTask race in DeltaWriter::commit() and loss of merge_condition during normal rowset commit. #73371 #72542
• Crashes, hangs, or unsafe cleanup in SinkBuffer graceful exit, PipelineTimerTask, runtime filter workers, spillable hash join probe, information_schema.warehouse_queries, lake vacuum, HTTP connection unregister paths, and query queue timeout handling. #73202 #73082 #72058 #72626 #72397 #72019 #73088 #72006 #65802
• Materialized view issues involving JDBC SQL Server tables, lost index properties, cached plan context memory leaks, Paimon tables, and incorrect shuffle distribution after MV rewrite. #72962 #69187 #72300 #58292 #71075
• Query planning and rewrite issues in Spark connector external scans, INSERT OVERWRITE re-planning, aggregation spill with small LIMIT, and generated columns produced by UNNEST. #73225 #72832 #72705 #72027
• Paimon Primary Key columns could be incorrectly marked as non-nullable when querying external catalogs. #71660
• Primary Key and tablet metadata issues including partial tablet schema short-key mismatch, rowset metadata cache warmup deadlock, disk data cache expansion failure, Azure filesystem client cache issues in Starlet, and colocate-heavy cluster-balance performance issues in StarOS. #70586 #71459 #58206 #73145 #72391
• Locker rollback and unlock-order issues during partial intensive-lock acquisition. #72789 #72423
• Dependency CVEs and broker dependency regressions. #72905 #72797 #72184 #72191
• JNI local-reference leaks in JDBC scanner initialization. #72913
• Arrow dictionary values in Parquet scanner and Apache Parquet namespace ambiguity during scanner builds. #71855 #72284
• NPE in Iceberg getPartitionLastUpdatedTime when the snapshot is expired. #68925