TDengine 3.3.7.0 Release Notes

Features

1. feat: new version of stream computing
2. feat: supports BLOB data type
3. feat: multi-level storage supports the adoption of shared storage
4. feat: data subscription supports the MQTT protocol.
5. feat: support for data mounting
6. feat: support auto reconnect in rust websocket and libtaosws
7. feat: go connector support blob data type
8. feat: support BLOB data type in taos-ws-py
9. feat: rust connector support new blob data type
10. feat: Go WebSocket connections support IPv6
11. feat: support IPv6 connection in C#
12. feat: support version compatible check
13. feat: libtaosws support adapterList for failover
14. feat: table name in transform support expression calc
15. feat: taosAdapter support new BLOB data type
16. feat: C WebSocket connector support BLOB data type
17. feat: taosX all data sources support decimal now
18. feat: C# connector support decimal type
19. feat: C websocket connector auto-reconnect and failover
20. feat: subscribe from TDengine to MQTT in taosX
21. feat: support MQTT sparkplug B datain in taosX
22. feat: support OpenMetrics collection endpoints
23. feat: new go connector benchmark tool
24. feat: refactor artifact of taosBenchmark with better perf and functionality: tsgen
25. feat: support writing query results to super tables.
26. feat: generate unique timestamp using now in taosX
27. feat: new plugin for ontop system
28. feat: C websocket connector support multi-address failover
29. feat: allow specify columns in count window

Enhancements

1. enh: added grant items such as storage capacity and number of vnodes.
2. enh: taosBenchmark support reading tbname/tags in csv
3. enh: taosX support more datetime format in between_time_range
4. enh: STMT2 supports setting fixed values for specified columns
5. enh: websocket poll enhancement
6. enh: Python WebSocket connections support automatic reconnection.
7. enh: support multiple target frameworks in C#
8. enh: downgrade gcc to 7.x for Hisoon database adapter
9. enh: OPC CSV points config can add tags values with template
10. enh: signed taosExplorer cannot start on mac
11. enh: c websocket ws/wss protocol detection
12. enh: support sml to get affected rows in rust connector
13. enh: reduce info logs
14. enh: support more write performance monitoring metrics
15. enh: support encrypting user passwords using the SM4 algorithm
16. enh: enables automatic detection and repair of WAL file corruption during startup
17. enh: STMT2 supports duplicate table name binding
18. enh: support varbinary data type in taosX
19. enh: taosBenchmark output perf metrics into json file
20. enh: raise exception in case of data conversion error
21. enh: taosX transform plugin included in release
22. enh: taosX restore from local dir support 'watch' parameter for watching file changes
23. enh: disable external usage of :6060/rest/sql in Explorer

Fixes

1. fix: memory leak occurs when subscribing to time-series data without metadata in Database topic
2. fix: taosd fails to start after modifying a single mount point in multi-level storage
3. fix: smallint type could not return query results when using the in ('1') condition for filtering.
4. fix: incorrect authentication cause taosAdapter mem leak
5. fix: single mount point failure in a multi-replica database cannot be recovered
6. fix: vrtual table write requests did not report errors
7. fix: support show tags on virtual table
8. fix: taosBenchmark REST never support vgroup bindings
9. fix: set timezone as same as JVM default does not work in websocket connection
10. fix: csv to decimal cause taosX panic
11. fix: fix decimal to double error when replicating with tmq
12. fix: fix opcua error in cli mode of taosX
13. fix: fix fetch_rows_a error in libtaows
14. fix: superset name typo in english of explorer tools docs
15. fix: OSS Explorer drop database error
16. fix: taosX consume messages with formatted json cause error
17. fix: ipv6 with zone info cause taosAdapter error on windows
18. fix: agent sometimes panic on ipc ack reader
19. fix: crash may occur when executing the show db.disk_info command
20. fix: taos -h reports an error when entering an IPv6 address.
21. fix: explorer sql query error should be visible
22. fix: TDB file corruption caused by concurrent data subscription scenarios.
23. fix: fFailed to query virtual tables in BI mode​​
24. fix: nchar tag index is not taking effect
25. fix: fix JDK caused panic on Kylin customized JDK for InfluxDB
26. fix: transform invalid column name error
27. fix: sorting fields of type double may cause the program to crash.
28. fix: configuration parameter update failure during system upgrade
29. fix: taosX tmq to td too many 'show subscriptions' queries cause taosd stuck
30. fix: datain page disappear in explorer
31. fix: taosX kafka datain will drop and logging non-utf8 input
32. fix: explorer table display error
33. fix: taosX support self-signed cert to adapter
34. fix: kafka udt support nested array like [{"data":[{"k":"v"}]}]
35. fix: sysinfo 0.33.1 cause slab mem increment on Kylin V10 os
36. fix: taosBenchmark connection number increases when check sql not set
37. fix: explorer slowsql query condition of timerange
38. fix: provide tool to manually rebuild the last cache quietly
39. fix: S3 upload failure caused by an abnormal compact operation.
40. fix: SQL error detail should display in Explorer logs
41. fix: drop topic will affect other consumers' subscriptions
42. fix: error occurs when the parameter string length of forecast exceeds 512
43. fix: resolved the time precision issue in the timediff function.
44. fix: incorrect results when using to_char function in a nanosecond-precision database
45. fix: error when reading composite primary key data from memory and STT, causing duplicate IDs.#31509
46. fix: client crashes when use STMT2 to the newly added column
47. fix: extremely rare race-condition crash when printing logs.#31688