TDengine 3.3.2.0 Release Notes

New Features/Optimizations

1. alter table add column supports ENCODE/COMPRESS
2. Improved impact of compact on read/write when stt_trigger=1
3. Adjust default value of SupportVnodes to 5 + 2 * CPU cores
4. Removed lossyColumns parameter
5. Only one parameter takes effect when modifying multiple parameters with alter table
6. SupportVnodes supports hot updates
7. Support for CentOS Stream

New Features/Optimizations (Enterprise Edition)

1. Balance vgroup leader for specified db
2. Multi-tier storage adds configuration item disable_create_new_file
3. Multi-tier storage adds rate limiting to cross-tier data migration
4. Hot update support for IP whitelist activation/deactivation
5. Ordinary users are no longer allowed to create databases
6. Improved key configuration for database encryption
7. Support for data compression in TDengine 2.0/3.0
8. Support for Oracle data sources
9. Support for Microsoft SQL Server data sources
10. OPC type tasks can dynamically acquire new data points
11. PI backfill supports resuming from breakpoints
12. PI backfill type tasks support Transformer
13. Performance optimization for PI data access
14. taos-explorer supports GEOMETRY/VARBINARY data types
15. taos-explorer supports import and export of user and permission information
16. PI data source supports synchronization of new data points/data element attributes to TDengine
17. Native connection support in taosX writer
18. Kafka supports GSSAPI
19. MQTT type tasks can pull sample data from data sources
20. Support for Object array data types
21. Support for data parsing through custom scripts
22. Support for dynamic data filtering through plugins

Bug Fixes

1. Added missing commands for modifying TTL and COMMENT in subtables
2. Querying first/last + interval + fill causes taosd to crash
3. Deleting topicA consumer group in tmq causes consumption failure in topicB with the same group
4. Parameter binding column index out of bounds causes taosd to crash
5. Querying cast function causes taosd to crash
6. taosdlog disappears after multiple resetlog
7. insert fails when inserting data from a select subquery with constant fields
8. event_window query causes taosd to crash
9. Querying interp + partition by column + fill causes taosd to crash
10. Query last returns values not as expected
11. event_window + having filter conditions not taking effect
12. taosX sync encounters null values in the first column causing taosd to crash (Enterprise Edition only)
13. Upgrading to 3.3.0.0 and enabling cachemodel causes incorrect row count returns for last + group by
14. taos-explorer navigation bar does not display all supertable names (Enterprise Edition only)
15. Querying causes taosd to crash when compound primary key VARCHAR length exceeds 125
16. High CPU usage by TDengine CLI and taosAdapter