Release 1.8.0

Key Features

Area	Feature
Task Level Recovery	1. Enables query recovery by retrying only failed task(s) using exchange materialization 2. Supported using HDFS for spooling 3. Supported Direct Serialization and compression too while materializing the exchange data.
Query Resource Management	Query level resource monitoring that triggers mitigation actions like suspend/resume query or task, spill revocable memory, throttle scheduling, and kill for problematic queries in a resource group.
Connector Extension	The singleData connector supplements the OLAP capability for the openGauss, enhances the capability of data analysis. Supports adaptor to the ShardingSphere and tidRange modes.