Cloudera Impala connection
To access your data in Cloudera Impala, create a connection asset for it.
Cloudera Impala provides high-performance, low-latency SQL queries on data that is stored in popular Apache Hadoop file formats.
Supported versions
Cloudera Impala 1.3+
Create a connection to Cloudera Impala
To create the connection asset, you need these connection details:
- Database (optional): If you do not enter a database name, you must enter the catalog name, schema name, and the table name in the properties for SQL queries.
- Hostname or IP address
- Port number
- Username and password
- SSL certificate (if required by the database server)
For Private connectivity, to connect to a database that is not externalized to the internet (for example, behind a firewall), you must set up a secure connection.
Choose the method for creating a connection based on where you are in the platform
- In a project
- Click Assets > New asset > Connect to a data source. See Adding a connection to a project.
- In a catalog
- Click Add to catalog > Connection. See Adding a connection asset to a catalog.
- In a deployment space
- Click Import assets > Data access > Connection. See Adding data assets to a deployment space.
- In the Platform assets catalog
- Click New connection. See Adding platform connections.
Next step: Add data assets from the connection
Where you can use this connection
You can use Cloudera Impala connections in the following workspaces and tools:
Projects
- Data Refinery (Watson Studio or IBM Knowledge Catalog)
- DataStage (DataStage service). See Connecting to a data source in DataStage.
- Metadata enrichment (IBM Knowledge Catalog)
- Metadata import (IBM Knowledge Catalog)
- SPSS Modeler (Watson Studio)
Catalogs
-
Platform assets catalog
-
Other catalogs (IBM Knowledge Catalog)
- Watson Query service
- You can connect to this data source from Watson Query.
Cloudera Impala setup
Restriction
You can use this connection only for source data. You cannot write to data or export data with this connection.
Running SQL statements
To ensure that your SQL statements run correctly, refer to the Impala SQL Language Reference for the correct syntax.
Learn more
Parent topic: Supported connections