The Apache IoTDB team is pleased to announce the release of Apache IoTDB 2.0.1-beta.
Apache IoTDB (Database for Internet of Things) is an IoT native database with high performance for data management and analysis, deployable on the edge and the cloud. ## Features & Improvements - Table Model: IoTDB has introduced a new model named table model, and supports standard SQL query syntax, including SELECT, WHERE, JOIN, GROUP BY, ORDER BY, LIMIT clause and subQuery. - Data Query: The table model supports a variety of functions and operators, including logical operators, mathematical functions, and the time-series specific function DIFF, etc. - Data Query: The databases of the table model and tree model are invisible to each other, and users can choose the appropriate model based on their needs. - Data Query: Users can control the loading of UDF, PipePlugin, Trigger, and AINode via URI with configuration items to load JAR packages. - Storage Engine: The table model supports data ingestion through the Session interface, and the Session interface supports automatic metadata creation. - Storage Engine: The Python client now supports four new data types: String, Blob, Date, and Timestamp. - Storage Engine: The comparison rules for the priority of same-type merge tasks have been optimized. - Data Synchronization: Support for specifying authentication information of the receiving end at the sending end. - Stream Processing Module: TsFile Load now supports the table model. - Stream Processing Module: Pipe now supports the table model. - System Management: The Benchmark tool has been adapted to support the table model. - System Management: The Benchmark tool now supports four new data types: String, Blob, Date, and Timestamp. - System Management: The stability of DataNode scaling down has been enhanced. - System Management: Users are now allowed to perform drop database operations in readonly mode. - Scripts and Tools: The import-data/export-data scripts have been extended to support new data types (string, binary large objects, date, timestamp). - Scripts and Tools: The import-data/export-data scripts have been iterated to support the import and export of three types of data: TsFile, CSV, and SQL. - Ecosystem Integration: Support for Kubernetes Operator. ... ## Bugs - Fixed the issue where the query result set contained duplicate timestamps. - Fixed the issue where deleted data could be queried again when triggered to merge after deletion. - Fixed the issue where the target sequence in SELECT INTO containing backticks would result in writing the wrong sequence. - Fixed the issue where an array out-of-bounds exception was thrown in the HAVING clause of the tree model due to a non-existent column name. - Fixed the issue where MergeReader needed to consider memory allocation to avoid negative available memory during out-of-order and reverse queries. - Fixed the issue where the CN in the cluster could not register large pipe plugins (greater than 100MB) and the parameters were not configurable. - Fixed the issue of controlling the memory size of TimeIndex referenced by Pipe for TsFileResource. - Fixed the issue where the Storage Engine - File Count - mods displayed negative values on the monitoring dashboard. - Fixed the issue where the query result order was incorrect in the C# client. ... The full release note is available at: https://dlcdn.apache.org/iotdb/2.0.1-beta/RELEASE_NOTES.md The release is available for download at: http://iotdb.apache.org/Download Maven artifacts for JDBC driver, session SDK can be found at: https://search.maven.org/search?q=3Dg:org.apache.iotdb Regards, The Apache IoTDB team
