Init script fails to download Maven JAR
Problem You have an init script that is attempting to install a library via Maven, but it fails when trying to download a JAR. https://repo1.maven.org/maven2/com/nvidia/rapids-4-spark_2.12/0.4.1/rapids-4-spark_2.12-0.4.1.jar%0D Resolving repo1.maven.org (repo1.maven.org)... 151.101.248.209 Connecting to repo1.maven.org (repo1.maven.org)|151.101.248....
0 min reading timeRStudio server backend connection error
Problem You get a backend connection error when using RStudio server. Error in Sys.setenv(EXISTING_SPARKR_BACKEND_PORT = system(paste0("wget -qO - 'http://localhost:6061/?type=\"com.databricks.backend.common.rpc.DriverMessages$StartRStudioSparkRBackend\"' --post-data='{\"@class\":\"com.databricks.backend.common.rpc.DriverMessages$StartRStudioSparkRB...
1 min reading timeDrop database without deletion
By default, the DROP DATABASE (AWS | Azure | GCP) command drops the database and deletes the directory associated with the database from the file system. Sometimes you may want to drop the database, but keep the underlying database directory intact. Example code You can use this example code to drop the database without dropping the underlying stora...
0 min reading timeTroubleshoot key vault access issues
You are trying to access secrets, when you get an error message. com.databricks.common.client.DatabricksServiceException: INVALID_STATE: Databricks could not access keyvault: https://xxxxxxx.vault.azure.net/. There is not a single root cause for this error message, so you will have to do some troubleshooting. Confirm permissions are correctly set on...
0 min reading timeConfigure Simba JDBC driver using Azure AD
This article describes how to access Azure Databricks with a Simba JDBC driver using Azure AD authentication. This can be useful if you want to use an Azure AD user account to connect to Azure Databricks. Info Power BI has native support for Azure AD authentication with Azure Databricks. Review the Power BI documentation for more information. Create...
1 min reading timeCluster fails to start with dummy does not exist error
Problem You try to start a cluster, but it fails to start. You get an Apache Spark error message. Internal error message: Spark error: Driver down You review the cluster driver and worker logs and see an error message containing java.io.FileNotFoundException: File file:/databricks/driver/dummy does not exist. 21/07/14 21:44:06 ERROR DriverDaemon$: X...
1 min reading timeGet Apache Spark config in DBConnect
You can always view the Spark configuration (AWS | Azure | GCP) for your cluster by reviewing the cluster details in the workspace. If you are using DBConnect (AWS | Azure | GCP) you may want to quickly review the current Spark configuration details without switching over to the workspace UI. This example code shows you how to get the current Spark ...
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