Hive catalog

You can add Hive as a catalog in Flink SQL by adding Hive dependency to your project, registering the Hive table in Java and setting it either globally in Cloudera Manager or the custom environment file.

The Hive catalog serves two purposes:
  • It is a persistent storage for pure Flink metadata
  • It is an interface for reading and writing existing Hive tables
Maven Dependency
The following example shows how to register and use the Hive catalog from Java:
String HIVE = "hive";
String DB = "default";
String HIVE_CONF_DIR = "/etc/hive/conf";
String HIVE_VERSION = "3.1.3000";

HiveCatalog catalog = new HiveCatalog(HIVE, DB, HIVE_CONF_DIR, HIVE_VERSION);
tableEnv.registerCatalog(HIVE, catalog);