Impala
How to set up and configure the Impala ODBC driver.
Tool Permissions Prerequisites
For detailed information, see Apache Ranger permissions for Impala metadata extraction.
Download and Install Impala ODBC Driver
- Download the ODBC driver for Impala from your vendor’s website: Impala ODBC Driver Download
- Ensure that you choose the correct driver version ( 32-bit or 64-bit ) based on your environment and client tool.
Configure the DSN (Data Source Name)
-
Open the ODBC Data Source Administrator
- Search for "ODBC Data Source" in the Start menu.
- Select either 32-bit or 64-bit , depending on the installed driver.
-
Create a New System DSN
-
Name:
Provide a friendly name (e.g.,
Impala_ODBC). - Description: (Optional) Add details (e.g., “Impala ODBC connection”).
- Host: Enter the hostname (or IP address ) of the Impala service.
- Port: Default port is 21050 for Impala (confirm in your cluster setup).
-
Database:
Specify a default database to connect to (e.g.,
default). - Authentication Mechanism: Use User Name and Password authentication.
- SSL/TLS: If required, configure SSL settings for a secure connection.
-
Name:
Provide a friendly name (e.g.,
Verify the Impala ODBC Connection
- Test the connection and ensure the setup is successful.
- If the connection fails, verify the host, port, database, and authentication settings .
How to Verify the Extracted Metadata File
- Access the Cloudera Octopai Target Folder (TGT)
-
-
Navigate to the
TGT Folder
on the server where the
Octopai Client
is installed.
-
Default location:
C:\Program Files (x86)\Octopai\Service\TGT
-
Default location:
-
Locate the ZIP file with the
Impala Connector Name
.
-
Example:
Impala_Metadata_Export.zip
-
Example:
-
Verify its content:
- Check the quantity and quality of inner files.
-
Navigate to the
TGT Folder
on the server where the
Octopai Client
is installed.
Troubleshoot Extraction Errors
⚠ Error during extraction? Try the following steps:
- Check permissions on the Impala server and ODBC connection.
- Verify the DSN configuration (correct hostname, port, authentication).
- Ensure that the Impala service is running and accessible.
-
Send the log file with the connector name and number to
Cloudera Support:
-
C:\Program Files (x86)\Octopai\Service\log
-
