The Apache IoTDB team is pleased to announce the release of Apache IoTDB 1.2.0.
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. Apache IoTDB 1.2.0 is the latest version of the v1 series. Feel free to upgrade from 1.1.2 or earlier version. ## New Feature * [IOTDB-5567] add SQL for querying seriesslotid and timeslotid * [IOTDB-5631] Add a built-in aggregation functions named time_duration * [IOTDB-5636] Add round as built-in scalar function * [IOTDB-5637] Add substr as built-in scalar function * [IOTDB-5638] Support case when syntax in IoTDB * [IOTDB-5643] Add REPLACE as a built-in scalar function * [IOTDB-5683] Support aggregation function Mode for query * [IOTDB-5711] Python API should support connecting multiple nodes * [IOTDB-5752] Python Client supports write redirection * [IOTDB-5765] Support Order By Expression * [IOTDB-5771] add SPRINTZ and RLBE encodor and LZMA2 compressor * [IOTDB-5924] Add SessionPool deletion API * [IOTDB-5950] Support Dynamic Schema Template * [IOTDB-5951] Support show timeseries/device with specific string contained in path * [IOTDB-5955] Support create timeseries using schema template in Session API ## Improvements * [IOTDB-5630] Make function cast a built-in function * [IOTDB-5689] Close Isink when ISourceHandle is closed * [IOTDB-5715] Improve the performance of query order by time desc * [IOTDB-5763] Optimize the memory estimate for INTO operations * [IOTDB-5887] Optimize the construction performance of PathPatternTree without wildcards * [IOTDB-5888] TTL logs didn' t consider timestamp precision * [IOTDB-5896] Failed to execute delete statement * [IOTDB-5908] Add more query metrics * [IOTDB-5911] print-iotdb-data-dir tool cannot work * [IOTDB-5914] Remove redundant debug log in Session * [IOTDB-5919] show variables add a variable timestamp_precision * [IOTDB-5926] Optimize metric implementation * [IOTDB-5929] Enable DataPartition inherit policy * [IOTDB-5943] Avoid rpc invoking for SimpleQueryTerminator when endpoint is local address * [IOTDB-5944] Follower doesn' t need to update last cache when using IoT_consensus * [IOTDB-5945] Add a cache to avoid initialize duplicated device id object in write process * [IOTDB-5946] Optimize the implement of tablet in Go client * [IOTDB-5949] Support show timeseries with datatype filter * [IOTDB-5952] Support FIFO strategy in DataNodeSchemaCache * [IOTDB-6022] The WAL piles up when multi-replica iotconsensus is written at high concurrency The full release note is available at: https://dlcdn.apache.org/iotdb/1.2.0/RELEASE_NOTES.md The release is available for download at: http://iotdb.apache.org/Download Maven artifacts for JDBC driver, session SDK, TsFile SDK, Spark-connector, Hadoop-connector, Hive-connector and Flink-connector can be found at: https://search.maven.org/search?q=3Dg:org.apache.iotdb Regards, The Apache IoTDB team
