Querying and Schema Update in LENS Server Modules
Explore the functionalities of Applications.Reporting, Ad Hoc Queries, CLI Java Client, JDBC Client, and REST API in LENS server modules for querying and schema updates. Learn about the different stages of query processing and management in the Lens Server environment.
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Presentation Transcript
Applications Reporting, Ad Hoc Queries CLI Java Client JDBC Client REST API for querying and schema update LENS Based on underlying Hive Metastore/HCatalog OLAP Cube Metastore Lens Server Driver API Hive (MR) JDBC Spark SQL Pluggable Execution Engines Columnar DWH Data Stores HDFS HBase S3 Redshift
Query submitted NEW QUEUED Submitted to Driver Semantic Analysis Failed LAUNCHED RUNNING Query cancelled by user Failed in Driver EXECUTED FAILED CANCELLED SUCCESSFUL CLOSED Query purged from memory by Lens Server
Lens Server Modules JAX-RS (Jersey) Authentication and Authorization Session Service Metastore Service Scheduler service Query Service JDBC Driver Other Drivers Hive Driver Event Service
Lens Server Hive Server2 Hive Metastore Server JDBC Driver Columnar DWH My SQL
