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New Azure Synapse Analytics connector column length control Because the two file formats have a fixed schema, Auto Loader can automatically use a fixed schema. If the file format is text or binaryFile you no longer need to provide the schema.Now supports Azure Data Lake Storage Gen1 in directory listing mode.For details, see Adaptive query execution. AQE is enabled by default in Databricks Runtime 7.3 LTS. Adaptive query executionĪdaptive query execution (AQE) is a query re-optimization framework that dynamically adjusts query plans during execution based on runtime statistics collected. For details, see Specify initial position. The Delta Lake Structured Streaming connector now supports startingVersion and startingTimestamp options to specify the starting point of the streaming query without processing the entire table. Specify the initial position for Delta Lake Structured Streaming source Merge queries that unconditionally delete matched rows no longer throw errors on multiple matches.Merge now supports any number of MATCHED and NOT MATCHED clauses.Clone metrics now availableĬlone operation metrics are now recorded and can be viewed when you run DESCRIBE HISTORY.
HIVE DBVISUALIZER 9.5.1 UPGRADE
To enable these optimizations you must upgrade all of your clusters that write to and read your Delta table to Databricks Runtime 7.3 LTS or above.įor details and caveats, see Enhanced checkpoints for low-latency queries. This release enables a collection of optimizations that reduce the overhead of Delta Lake operations from seconds to tens of milliseconds. Specify the initial position for Delta Lake Structured Streaming sourceĭelta Lake performance optimizations significantly reduce overhead.
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Delta Lake performance optimizations significantly reduce overhead.This release provides the following Delta Lake features and improvements: In this section New features Delta Lake features and improvements The following release notes provide information about Databricks Runtime 7.3 LTS, powered by Apache Spark 3.0.įor help with migration from Databricks Runtime 6.x, see Databricks Runtime 7.x migration guide. It was declared Long Term Support (LTS) in October 2020. Databricks released this image in September 2020.