TDengine 3.3.5.0 Release Notes

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

• Integration with Apache Superset: You can now use data stored in TDengine with Apache Superset, a modern data exploration and visualization platform. For more information, see Integration with Superset.
• Embedded Grafana dashboards in taosExplorer: You can configure one or more Grafana dashboards to display monitoring data for your TDengine cluster and view them within taosExplorer.
• Updated compression settings: The default settings for data compression have been updated based on extensive internal testing. The updated defaults reduce compressed data size in most scenarios. For more information, see Data Compression.
• (TDengine Enterprise only) Improved COMPACT experience: The COMPACT command for database defragmentation can now be run automatically. You can also view the progress of a COMPACT operation and specify a desired concurrency.

Note: Password requirements for TDengine users have been made more strict in TDengine 3.3.5.0. See Users for more information on the specific requirements.

Compatibility

• You can deploy TDengine Enterprise 3.3.5.0 on mainstream Linux distributions and Windows.
• You can deploy TDengine OSS Server 3.3.5.0 on mainstream Linux distributions and macOS.
• You can deploy TDengine OSS Client 3.3.5.0 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 3.3.5.0 with various architectures and operating systems.

Note: You must upgrade existing clients to TDengine 3.3.5.0 before connecting to a TDengine 3.3.5.0 server.

Upgrading to TDengine 3.3.5.0

Upgrading TDengine OSS

You can upgrade TDengine OSS to version 3.3.5.0 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 3.3.5.0 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 3.3.5.0. Rolling upgrades are not supported in TDengine 3.3.5.0.

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.