TDengine 3.3.2.0 Release Notes

New Features/Optimizations

1. ALTER TABLE ADD COLUMN supports ENCODE/COMPRESS
2. Improved the impact of compact on read/write under stt_trigger=1
3. Adjusted default value of SupportVnodes to 5+2*CPU cores
4. Removed lossyColumns parameter
5. Only one parameter takes effect when multiple parameters are modified in ALTER TABLE
6. SupportVnodes supports hot updates
7. Supports CentOS Stream

New Features/Optimizations (Enterprise Edition)

1. Balance vgroup leader for specified db
2. New configuration option disable_create_new_file for multi-level storage
3. Added speed limit settings for cross-level data migration in multi-level storage
4. IP whitelist startup/stop supports hot updates
5. Cancel database creation permissions for ordinary users
6. Improved key configuration for database encryption
7. Support for data compression of 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 obtain new data points
11. PI backfill supports breakpoint resume functionality
12. Tasks of type PI backfill support Transformer
13. PI data access performance optimization
14. taos-explorer supports GEOMETRY/VARBINARY data types
15. taos-explorer supports importing and exporting user and permission information
16. PI data sources support syncing new data points/data element attributes to TDengine
17. taosX write end supports native connection
18. Kafka supports GSSAPI
19. MQTT type tasks can pull sample data from the data source
20. Support for Object array type data
21. Support for parsing data through custom scripts
22. Support for dynamically filtering data through plugins

Issues Fixed

1. Modified command description missing for changing TTL and COMMENT in subtable
2. Querying FIRST/LAST + INTERVAL + FILL causes taosd to crash
3. Deleting topicA consumer group in tmq causes failure in consuming topicB of 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 resets of log
7. Insert fails for data with constant fields in a SELECT subquery
8. EVENT_WINDOW query causes taosd to crash
9. Querying INTERP + PARTITION BY COLUMN + FILL causes taosd to crash
10. Querying LAST returns values inconsistent with expectations
11. EVENT_WINDOW + HAVING filter condition not effective
12. taosX synchronization encounters null value in the first column causing taosd to crash (Enterprise Edition only)
13. Upgrading to 3.3.0.0 with cachemodel enabled leads to incorrect row count in queries of LAST + GROUP BY
14. taos-explorer navigation bar does not display all supertable names (Enterprise Edition only)
15. Composite primary key VARCHAR length exceeding 125 leads to taosd crashing on query
16. taos CLI and taosAdapter consume too much CPU