About TDengine
TDengine is a time-series database purpose-built for Industry 4.0 and Industrial IoT. It enables real-time ingestion, storage, analysis, and distribution of petabytes of data per day, generated by billions of sensors and data collectors. With TDengine making big data accessible, valuable, and affordable, digital transformation has never been easier.
What’s New
- Support for many new SQL functions: You can now use the following functions:
PI,TRUNCATE,EXP,LN,MOD,RAND,SIGN,DEGREES,RADIANS,CHAR,ASCII,POSITION,TRIM,REPLACE,REPEAT,SUBSTRING,SUBSTRING_INDEX,WEEK,WEEKDAY,WEEKOFYEAR,DAYOFWEEK,STDDEV_POP, andVAR_POP. For more information, see Functions. - Expanded TSMA window: You can now set the window size for a time-series materialized aggregate (TSMA) to a maximum of one year. In previous versions, the maximum window size was one hour. For more information, see Window Pre-Aggregation.
- (TDengine Enterprise only) MongoDB connector: You can now migrate and replicate legacy time-series datasets from MongoDB to TDengine.
- (TDengine Enterprise only) Azure Blob Storage: You can configure tiered storage in TDengine to make use of Azure Blob Storage in addition to existing options such as Amazon S3.
Compatibility
- You can deploy TDengine Enterprise 3.3.3.0 on mainstream Linux distributions and Windows.
- You can deploy TDengine OSS Server 3.3.3.0 on mainstream Linux distributions and macOS.
- You can deploy TDengine OSS Client 3.3.3.0 on mainstream Linux distributions, macOS, and Windows.
You can also run TDengine in Kubernetes or in Docker containers. See Supported Platforms for details about the compatibility of TDengine 3.3.3.0 with various architectures and operating systems.
Note: You must upgrade existing clients to TDengine 3.3.3.0 before connecting to a TDengine 3.3.3.0 server.
Upgrading to TDengine 3.3.3.0
Upgrading TDengine OSS
You can upgrade TDengine OSS to version 3.3.3.0 from version 3.0.1.5 or later.
To upgrade TDengine OSS, first back up your deployment by making a copy of the TDengine directory. After verifying that your deployment has been backed up, install TDengine 3.3.3.0 as described in the official documentation. It is not necessary to uninstall TDengine before upgrading.
Note: If you have deployed TDengine as a cluster, you must shut down and upgrade all nodes in the cluster to TDengine 3.3.3.0. Rolling upgrades are not supported in TDengine 3.3.3.0.
Upgrading TDengine Enterprise and TDengine Cloud
Contact your account representative for assistance in upgrading TDengine Enterprise or TDengine Cloud.
You can check your current version of TDengine at any time by running the SELECT SERVER_VERSION(); command.
Resolved Issues
For a full list of issues resolved in this release, see our GitHub repository.
