Error: [Simba][Hardy] (34) Error from server: Bad Status: HTTP/1.1 404 Not Found in databricks connection from Tableau

[Simba][Hardy] (34) Error from server: Bad Status: HTTP/1.1 404 Not Found in databricks connection from Tableau

Thais happens when we are not using the correct HTTP Path in Spark SQL connection.
To resolve the issue replace the HTTP Path with the correct one from Databricks cluster:

Below highlights the connection settings to be changed in Tableau datasource connection.

Comments

Learn GitHub

Learn GitHub git init git add file.txt git commit -m "my first commit" git remote add origin https://github.com/dansullivanma/devlops_data_sci.git git clone https://github.com/dansullivanma/devlops_data_sci.git

Garbage collection in Databricks

Clean up snapshots Delta Lake provides snapshot isolation for reads, which means that it is safe to run OPTIMIZE even while other users or jobs are querying the table. Eventually however, you should clean up old snapshots. You can do this by running the VACUUM command: VACUUM events You control the age of the latest retained snapshot by using the RETAIN <N> HOURS option: VACUUM events RETAIN 24 HOURS Test the garbage collection You can specify DRY RUN to test the garbage collection and return a list of files to be deleted: VACUUM events DRY RUN Configure the retention threshold The VACUUM command removes any files that are no longer in the latest state of the transaction log for the table and are older than a retention threshold. The default threshold is 7 days, but you can specify an alternate retention interval. For example, to delete all stale files older t...

Error The Specified driver class (org.postgres.Driver) is not available!

SQL Workbench error for PostgreSQL connection: The Specified driver class (org.postgres.Driver) is not available! Below is the error which can appears while connecting to a PostgreSQL databases in SQL workbench: This could be due to Postgres driver is not found by the Workbench tool. This could happen if the folder containing the driver is moved or deleted. Solution: To fix this issue, 1. Open Workbench and go to File - > Manage Drivers 2. Select PostgreSQL 3. Under the Library option select the Folder where the driver is located and select the driver and click on Open. you can download the latest Postgres JDBC drivers at: https://jdbc.postgresql.org/download.html 4. Click on OK to to close the Manage Drivers window. 5. Now try to connect to the PostgreSQL database with correct credentials, it should connect.

Data Engineering

Search This Blog