TDengine 3.4.0.2 Release Notes

Features

1. feat: Automatically create xnode during TSDB initialization
2. feat: Explorer License page shows machine code
3. feat: taosX-agent support xnode ha
4. feat: taosX support parquet files import
5. feat: add SQL recording for STMT in adapter
6. feat: Rust native connector support STMT2
7. feat: support dual conditions of duration and row count for true_for judgment in event and state windows of stream and batch query

Enhancements

1. enh: STMT query supports the binding of the interval parameter
2. enh: provide clearer error messages for SQL statements
3. enh: add column created_by/labels for XNODE TASK
4. enh: optimize the login verification logic to force root users who log in with the default password to change their passwords
5. enh: improve the processing mechanism of data encryption for bse and other files
6. enh: add notification mechanism related to user tokens
7. enh: support upgrading clusters with old-version data encryption mechanism to new-version one
8. enh: support creating TOTP secrets using the create totp_secret syntax
9. enh: support both IPv4 & IPv6 protocol stacks
10. enh: support updating expiration time and policy for data encryption keys
11. enh: allow any chars in MQTT topic
12. enh: rename lag function to fill_forward and redevelop Lag function compatible with MySQL in follow-up
13. enh: improve performance of cols + last queries on virtual tables with only one original table
14. enh: support modifying permission control for users
15. enh: improve permission control for views and audits
16. enh: handle permission compatibility from version 3.3 to 3.4
17. enh: prohibit users from tampering with configuration files after data encryption takes effect
18. enh: optimize the notification content of stream period triggers by adding the trigger start time and end time fields (retaining the windowStart and windowEnd field names)
19. enh: adjust the upper limit of the original tables referenced by virtual tables from 1000 to 2000
20. enh: reduce the computing latency when stream query statements contain virtual table tag filter conditions
21. enh: optimize the syntax of stream statements to support the use of placeholders such as _twstart in the ORDER BY clause
22. enh: optimize the execution logic of outer join queries to resolve the issue where limit does not take effect when order by is not specified

Fixes

1. fix: incorrect results when executing the show create table statement on virtual tables
2. fix: null pointer error when InfluxDB schema changes
3. fix: crash in stream caused by improper handling of heartbeat messages after mnode leader switchover
4. fix: memory leak that occurs when UDF function initialization fails
5. fix: influxdb error with backslash syntax in taosX
6. fix: incorrect results when invoking the concat function in stream
7. fix: special characters not supported in taoskeeper password
8. fix: inaccurate scheduled execution time for multi-level storage migration tasks
9. fix: migration stuck in AVEVA Historian data-in
10. fix: incorrect results when the data in individual group windows is all NULL values during multi-group processing in state windows
11. fix: abnormal calculation results after deleting and rebuilding the result subtable of stream
12. fix: the client may crash when the concurrent write volume of STMT is high
13. fix: incorrect default time configuration issue for password reuse restrictions
14. fix: error while performing JOIN operations with subqueries without the FROM clause
15. fix: MySQL DataIn task may block when few data rows
16. fix: remove duplicate error details
17. fix: trigger logic error of the true_for option in stream when out-of-order data is written
18. fix: taosX native connection tmq error message
19. fix: possibly stuck on systemctl stop taosd caused by xnoded
20. fix: subscriptions created by a user cannot be canceled after the user is deleted
21. fix: crash while combined use of group_concat function and count_window
22. fix: create task error for opc
23. fix: failed to set user permissions in taosExplorer of v3.4.0 version