Release notes of LindormTSDB - Lindorm

LindormTSDB is updated regularly with new features, performance improvements, and bug fixes. This topic covers release notes for each version and explains how to upgrade your instance during off-peak hours.

View or upgrade the LindormTSDB version of a Lindorm instance

View the LindormTSDB version of an instance in the Lindorm console. The following figure shows where to find the version information. To upgrade, see Upgrade the minor engine version of a Lindorm instance.

Important

Lindorm automatically checks the LindormTSDB version of your instance. If the Upgrade Minor Version button is not displayed, the instance is already running the latest version.
Release schedules vary by region. The versions available for your instance depend on what is shown in the console.

3.4.17 to 3.4.x

3.4.48

Release date	Category	Description
2026-01-06	Bug fixes	Fix an issue where the SQL query RT monitoring metric shows no data in the console.
	Bug fixes	Fix an error that occurs when using the `TagValue IN` operator in queries.
	Stability	Stability fix.

3.4.47

Release date	Category	Description
2025-10-17	Bug fixes	Fix an issue where `SHOW PROCESSLIST` returns unexpected NULL values.
	Bug fixes	Fix an issue where the `LATEST` function returns inaccurate results.
	Performance	Improve read and write performance and stability.

3.4.46

Release date	Category	Description
2025-05-14	Bug fixes	Fix an issue with active SQL connections in the console.
	Performance	Improve query performance and stability.

3.4.45

Release date	Category	Description
2025-02-27	Performance	Improve query performance of the `LATEST` function. Improve read and write performance and stability.

3.4.44

Release date	Category	Description
2025-02-07	New features	Support the `RATE` and `DELTA` downsampling functions for LONG-type data.
	Performance	Improve read and write performance and stability.

3.4.43

Release date	Category	Description
2024-11-29	Bug fixes	Fix a query error that may occur when querying pre-downsampled files. Fix a PromQL compatibility issue.
	Performance	Improve read and write performance and stability.

3.4.41 (stable version)

Release date	Category	Description
2024-08-28	Performance	Improve query performance of the `LATEST` function.
	Bug fixes	Fix an issue where aliases cannot be specified in `DELETE` syntax. Fix an issue where a continuous query (CQ) exception terminates subsequent queries.
	Performance	Improve read and write performance and stability.

3.4.36 to 3.4.40

3.4.40

Release date	Category	Description
2024-05-24	Bug fixes	Fix bugs in PromQL data queries.

3.4.39

Release date	Category	Description
2024-05-08	New features	Record usernames in audit logs.
	Improvement	Sort PromQL results by time series by default.
	Performance	Improve read and write performance and stability.

3.4.38

Release date	Category	Description
2024-04-09	Performance	Improve LindormTSDB startup speed after a restart. You can optimize the LindormTSDB kernel's memory usage.
	Bug fixes	Fix an API compatibility issue with BIGINT data in queries.

3.4.37

Release date	Category	Description
2024-03-01	New features	PromQL supports the offset modifier.
	Bug fixes	Fix an issue introduced in 3.4.35 where SQL statements are not recorded in access logs.

3.4.36

Release date	Category	Description
2024-01-29	Performance	Reduce kernel memory consumption.
	Bug fixes	Fix query errors that may occur after a restart.

3.4.31 to 3.4.35

3.4.35

Release date	Category	Description
2023-12-26	Performance	Improve restart speed for instances with multiple partitions.
	Bug fixes	Fix incorrect start or end time calculation for CQs. Fix an issue where data written after a delete operation cannot be queried.
	Performance	Improve read and write performance and stability.

3.4.34

Release date	Category	Description
2023-11-02	Stability	Fix stability issues.

3.4.33

Release date	Category	Description
2023-10-11	Performance	Optimize memory usage and query performance. Improve PromQL compatibility.
	Bug fixes	Fix a stability issue with downsampling queries for 1dc windows.

3.4.32

Release date	Category	Description
2023-09-12	New features	Support the standard `CREATE TABLE` statement to create tables.
	New features	Enable TSProxy health check and slow query management by default.
	Bug fixes	Fix an issue where a subquery fails when aggregation results based on time series filters are not specified. Fix a memory leak where query resources are not released after the client disconnects. Fix a metadata retention issue when the TTL value is deleted for a shard.
	Performance	Improve read and write performance and stability.

3.4.31

Release date	Category	Description
2023-08-09	Bug fixes	Fix an issue where database-level authentication via API fails. Fix data exceptions that may occur when overwriting existing data. Fix PromQL compatibility issues.
	Performance	Improve read and write performance.

3.4.26 to 3.4.30

3.4.30

Release date	Category	Description
2023-06-30	Improvement	Update the default username and password.
	Bug fixes	Fix issues that may cause query exceptions.
	Performance	Improve read and write performance.

3.4.29

Release date	Category	Description
2023-06-06	Performance	Improve read and write performance.

3.4.28

Release date	Category	Description
2023-05-16	New features	Support the `window` and `offset` attributes for CQs.
	Bug fixes	Fix an issue where CQs may be unexpectedly terminated during execution.
	Performance	Improve read and write performance.

3.4.27

Release date	Category	Description
2023-04-06	New features	[Lindorm ML] Support downsampling and automatic interpolation for time series forecasting training data. Training data can be automatically used for model inference.
	Bug fixes	Fix a resource leak when a single-value query times out. Fix an issue where the `LATEST` function does not filter data by time partition. Fix a memory exhaustion issue when writing data with SQL.
	Performance	Improve write performance.

3.4.26

Release date	Category	Description
2023-03-14	New features	Support sorting data files by time window. Add the `irate` downsampling operator.
	New features	[Lindorm ML] Support nested SQL functions with non-downsampling operators for anomaly detection. Support historical covariates in time series forecasting.
	Bug fixes	Fix an error when a BIGINT field column is used as a filter condition in a `PrepareStatement`. Fix line protocol incompatibility with backslashes (`\`). Fix an issue where `latest()` does not return the latest value.
	Bug fixes	[Lindorm ML] Fix parameter validation for anomaly detection and forecasting inputs. Fix an inference issue when input data frequency does not match the specified frequency. Fix concurrent model file saving failures in anomaly detection. Fix `istl-esd` algorithm issues in anomaly detection. Fix the `verbose` parameter for OneShot STL and Online STL algorithms.
	Performance	Improve query performance.

3.4.25 (stable version)

Release date	Category	Description
2023-02-14	New features	Query access logs for Lindorm instances in the Lindorm console.
	New features	[Lindorm ML] Support nested SQL functions for anomaly detection on downsampled data. Support the `Literal` variable as the query target with nested SQL. Support SQL subqueries to query the `verbose` column in anomaly detection results. Add the `istl-esd` detection algorithm (an OneShot STL algorithm developed by DAMO Academy).
	Bug fixes	Optimize performance of queries with regular expression conditions. Fix stability issues with downsampling queries in the 1DC window. Reduce LindormTSDB restart time. Fix automatic schema creation failures in `weak` write mode. Fix a NullPointerException (NPE) when using the `fill linear` policy in downsampling queries. Fix an error when querying data with DMS. Fix a data write failure when the data type is set to BigDecimal in SQL. Fix an issue where scaling up a node fails after a future-dated timestamp is written.
	Bug fixes	[Lindorm ML] Fix the `alpha` and `warmupCount` parameters for the `esd` algorithm. Fix the `direction` and `warmupCount` parameters for the `nsigma` algorithm. Fix an error when switching time series during STL-based anomaly detection.
	Improvement	[Lindorm ML] Optimize anomaly detection so that model status does not change when already-detected data is reprocessed.

3.4.18 to 3.4.24

3.4.24

Release date	Category	Description
2023-01-06	Stability	Fix stability issues.

3.4.23

Release date	Category	Description
2023-01-03	New features	Optimize index file merge policies to support `COMPACTION` operations based on file size. Add the `verbose` parameter to `ANOMALY_DETECT` to output auxiliary information. Add model status reset and export to `ANOMALY_DETECT`.
	Bug fixes	Fix concurrent schema update conflicts. Fix an issue where `FORECAST` cannot retrieve enough data when an earlier or later time range is specified. Fix errors with `ostl-ttest` and `ostl-esd` algorithms on large datasets.
	Performance	Improve partition query performance. Optimize Lindorm ML anomaly detection performance.

3.4.22

Release date	Category	Description
2022-11-22	New features	Support single pre-defined values as filter conditions in downsampling queries. Support time series queries with SQL. Support data subscription by database in LTS. Add the `raw` function to Lindorm ML to output raw field values for anomaly detection.
	Improvement	Support PromQL series-related APIs. Increase the configurable default maximum connections per machine to 4,096.
	Bug fixes	Fix a resource leak in downsampling queries after the client disconnects. Fix a time series forecasting failure under concurrent threads.
	Performance	Improve write and query performance.

3.4.21

Release date	Category	Description
2022-09-27	New features	PromQL supports regular expression queries.
	Performance	Improve write performance when pre-downsampling is enabled.

3.4.20

Release date	Category	Description
2022-08-31	New features	Support Lindorm machine learning (ML). Add the feature binning operator for Lindorm ML. Support the Lindorm ML extension syntax in TSQL. Support time series anomaly detection algorithms and functions. Limit the maximum number of columns modifiable in a single table to 200.
	Bug fixes	Fix an error with `SHOW PROCESSLIST` after enabling permission verification. Fix incorrect latest value queries when data is updated. Fix incorrect data types returned by anomaly detection functions in subqueries.
	Performance	Improve query performance for large numbers of time series.

3.4.19

Release date	Category	Description
2022-07-29	New features	Configure rules to discard out-of-order data written in the past or future. Set `partition_interval` to 30-day time partitioning by default. Support time series anomaly detection algorithms, pre-downsampling, and timeline deletion.
	Bug fixes	Fix a type mismatch error when canceling an executing SQL statement. Fix lowercase parameter handling in `schema_policy` API operations. Fix PromQL handling of NaN data points. Fix missing data during previous interpolation.

3.4.18

Release date	Category	Description
2022-07-06	New features	TSQL supports time series deletion.
	Bug fixes	Fix an exception in TSQL queries when conditions include BOOLEAN values.

3.4.17 (stable version)

Release date	Category	Description
2022-06-17	New features	Configure the maximum time window for data writes. Data written after the offset period elapses is discarded.
	Bug fixes	Update early-timestamp data verification logic. Fix an error when negative numbers in scientific notation are used in SQL. Fix line protocol incompatibility with scientific notation. Fix CQ execution failures. Fix an error when `COUNT(1)` is used in nested subqueries.

3.4.0 to 3.4.16

Click to show 3.4.0 to 3.4.16

Version	Release date	Category	Description
3.4.16	2022-05-31	New features	Support timezone-based downsampling. Support multi-column queries in latest value syntax. Support querying and managing executing SQL statements. Support metadata queries when accessing data with PromQL.
3.4.15	2022-05-16	New features	Downsampling queries support the offset feature.
		Bug fixes	Fix a data type conversion error in `COUNT` with other operators in downsampling. Fix LONG data type support in `LIMIT` clauses of prepared statements. Fix manual data deletion failure when storage is locked. Fix query execution issues over long-lived connections using the `api/v2/sql` API path. Fix a TTL value of 0 not taking effect.
		Improvement	Set the start time to 0 by default for SQL queries without a time condition.
3.4.14	2022-04-25	New features	Separate read and write thread pools for T-SQL access. Support execution logs for CQ statements.
		Bug fixes	Fix an error when performing a `UNION` on a latest value query. Fix the `close()` method not being called for T-SQL statements after JDBC or SQL API connections close. Fix line protocol conflicts during concurrent schema updates.
3.14.13	2022-04-14	New features	Support `SHOW CREATE TABLE`. Support specifying time window length in CQ statements. Display `DESCRIBE TABLE` results in column creation order.
		Bug fixes	Fix prepared statement support for downsampling queries. Fix CQs not running after permission management is enabled.
		Improvement	Require that tag and field columns have different names when using the line protocol.
3.14.12	2022-03-30	New features	Support different TTLs for different pre-downsamplings. Automatically convert DOUBLE data written to BIGINT columns.
		Bug fixes	Fix incorrect results when querying the most recent BOOLEAN values. Fix queries not being canceled after SQL connections close.
3.4.11	2022-03-16	New features	Support custom names for time columns in SQL. Support changing column data types in time series tables with SQL.
		Bug fixes	Fix a `DISTINCT` statement error in some query scenarios. Fix multiple entries returned for latest value queries after adding nodes. Fix constant folding support in downsampling queries. Fix the time condition not taking effect in downsampling queries with regular expressions.
3.4.10	2022-02-28	New features	Support filtering tags with regular expressions in SQL queries. Add the `non_negative_rate` and `non_negative_delta` time series functions. Add length limits for tables, databases, CQs, and columns.
		Performance	Improve query performance when scanning large numbers of data points.
		Bug fixes	Fix an issue where two time series tables with the same column data types cannot be joined.
3.4.9	2022-02-14	New features	`DESCRIBE TABLE` returns table schemas with the `PRIMARY KEY` keyword. SQL statements are case-sensitive. Support writing NULL values to tags and fields with SQL. Support managing pre-downsampling rules with SQL and creating downsampling rules per table. Standardize error codes and descriptions for SQL statement execution.
		Bug fixes	Fix out-of-range data returned for latest value queries. Remove the requirement for backticks around the `interval` parameter when creating a CQ.
3.4.8	2022-02-07	Bug fixes	Fix a bug with the hash policy.
3.4.7	2022-01-26	New features	Require at least one field column in T-SQL data write statements. Support creating and deleting pre-downsampling rules with T-SQL. Support setting downsampling to 0 in TSQL. Support nesting `RATE` and `DELTA` functions in T-SQL. PromQL supports basic authentication and the DB parameter. Support strong schema constraints for line protocol writes. Set the maximum table name length to 128 bytes.
		Bug fixes	Fix data loss when tables are repeatedly deleted. Fix integer write failures to two columns. Fix an error when downsampling data in a single column in a nested subquery.
3.4.6	2022-01-11	New features	Support schema policy configuration based on the InfluxDB line protocol with on-demand schema creation. Case-sensitive database and table names in T-SQL. T-SQL supports `GROUP BY` queries, pre-downsampling queries, the `ALTER TABLE` syntax, and returning data in batches via the `/api/v2/sql` API path with HTTP chunked mode. Schema consistency is checked by default for T-SQL `INSERT` statements.
		Bug fixes	Fix a cache flush exception preventing data flushing. Fix CQ failures caused by JDBC prefix mismatches. Fix inconsistent time string processing between data query and write SQL statements. Fix exceptions with `sample by fill` and `percentile`. Fix an NPE when ACL is disabled and a user is created.
3.4.5	2021-12-24	New features	MySQL supports authentication. T-SQL improves simple query performance. T-SQL supports quantile functions and field queries via API. Support disabling time-based partitioning. The line protocol and API support schemaless writes, configurable via SQL (default: schemaless).
		Bug fixes	Fix data loss when writing to a table after it is deleted. Fix an NPE for invalid `api/v2/write` API requests. Fix an error querying multi-value downsampled data via `/api/mquery`. Fix historical file migration to cold storage. Fix a stack overflow in queries. Fix a compaction exception for STRING fields.
3.4.4	2021-12-14	New features	SQL supports `IF EXISTS`, `SHOW PRIVILEGES`, and `SHOW PARAMETER` syntax. Support millisecond-level downsampling intervals. `CREATE TABLE` requires TIME and FIELD columns and supports partitioning rules. Maximum FIELD columns: 1,024. Remove the default end time of current time. Add `RATE` and `DELTA` functions. `DESCRIBE TABLE` returns column data types. Optimize read/write compression for STRING data. Pre-downsampling rule `avg` is implemented based on count and sum by default.
		Bug fixes	Fix downsampled STRING data query failures. Fix errors when calling the `commit` or `rollback` method. Improve error messages for `INSERT` statements missing the time column. Fix an error for SQL statements with `JOIN` clauses. Fix count errors for pre-downsampled in-memory data.
3.4.3	2021-12-01	New features	Grafana plug-in supports database and user authentication. Independent flush thread for pre-downsampling. `DESCRIBE DATABASE` returns database properties. Remove the limit between TTL and hot/cold data boundaries. Time-based partitioning is disabled by default on new instances. Add write statistics per table, queryable via Lindorm-cli. Process strings as byte arrays with proxy compression. Specify the number of partitions when creating a database.
		Bug fixes	Fix a flush blocking issue caused by time-based partition chunking. Fix stability issues when creating or deleting a database. Fix an NPE when updating a database. Improve error messages for invalid time ranges in `INSERT` statements. Fix duplicate data in cross-partition SQL queries. Fix missing end time in API queries. Fix empty string write failures. Fix errors for columns with mixed data types in pre-downsampled data.
3.4.2	2021-11-15	New features	Streaming pipelines for latest value queries and downsampling in T-SQL. Streaming pipelines support the BIGINT data type. TSQL supports authentication syntax and SQL for wide tables. Support the `skip_wal` option for databases. TSQL downsampling algorithm pushdown for TSCore. PromQL supports multi-value queries.
		Bug fixes	Fix T-SQL filter conditions not supporting Chinese characters. Fix an error with the `AVG` function on pre-downsampled data. Fix query exceptions when deleting a table during writes. Fix a write-ahead log (WAL) rollback or file replacement bug. Fix an NPE for latest value queries. Fix schema update errors during T-SQL writes. Fix duplicate metrics in the suggest feature. Fix the minimum database name length (3 characters). Fix connections for T-SQL statements being unavailable for newly created databases.
3.3.4	2021-10-28	Bug fixes	Fix an NPE for latest value queries.
3.4.1	2021-10-22	New features	Optimize T-SQL queries with streaming data query support. Improve TSFile compression ratio. Remove TSCore schema queries from T-SQL to improve performance (create tables before querying data written via SDK). Display error messages for T-SQL DML statements.
		Bug fixes	Fix the SDK not receiving responses when the `details` parameter is used. Fix TSCore schema memory overflow with large numbers of timelines. Fix full garbage collection (GC) caused by large multi-partition queries. Fix data query failures due to multiple TSCore components.
3.4.0	2021-10-13	New features	T-SQL supports the BIGINT data type. T-SQL `INSERT` statements support writing NULL values.
		Performance	Improve parallel query efficiency.

3.3.0 to 3.3.4

Click to show 3.3.0 to 3.3.4

Version	Release date	Category	Description
3.3.4	2021-10-28	Bug fixes	Fix an NPE for latest value queries.
3.3.3	2021-09-08	New features	SDK supports queries for pre-downsampled data. OpenTSDB protocol supports the `GROUP BY` feature.
		Bug fixes	Fix data write blocking caused by WAL flush thread OOM errors. Fix WAL log stacking when pre-downsampled data fails to flush to disk.
3.3.2	2021-08-25	New features	Enable time-based partitioning by default with a 30-day validity period.
		Bug fixes	Fix inaccurate error messages when writing single-value data via `/api/mput`. Fix the TTL feature not working on the default partition. Fix duplicate data points at a single timestamp after data is flushed in overwrite scenarios.
3.3.1	2021-08-12	New features	Support general compression algorithms (disabled by default). Support scientific notation in line protocol data. Update the verification policy for special characters.
		Bug fixes	Fix the interpolation alignment bug. Fix interrupted cross-cluster queries during RPC processing. Fix a failure when writing to a new table whose name matches a previously deleted table.
		Performance	Optimize compaction policies. Optimize JVM parameters.
3.3.0	2021-07-28	New features	PromQL queries are supported.
		Bug fixes	Fix SDK connection drops. Fix T-SQL failures to query single-value data. Fix T-SQL alias settings not taking effect.