Apache Impala connector
The Apache Impala connector extracts database, table, column, and view metadata from Apache Impala into Cloudera Data Lineage (formerly Octopai), using either HiveServer or the Hive Metastore (HMS) as the metadata source.
The Apache Impala connector reads metadata from Apache Impala so that Cloudera Data Lineage can build lineage and catalog information. You can choose one of two metadata sources, depending on your environment:
- HiveServer
- Connects to the Impala service through an Open Database Connectivity (ODBC) data source name (DSN), using username and password or Kerberos authentication. For more information, see Configuring Impala connector with HiveServer as the metadata source.
- HMS
- Connects directly to the Hive Metastore (HMS) database that backs Hive and Impala. For more information, see Configuring Impala connector with HMS as the metadata source.
Before you extract metadata, ensure that the required permissions are in place. For more information, see Apache Ranger permissions for Impala metadata extraction.
