Databricks

In azure AD, it's shows users are synced to Databricks. But in Databricks, it's showing users is not a part of the group. The user is not part of only one group , he is part of remaining groups. All the syncing works fine till yesterday. I don't now ...

I have two clusters. Cluster A(spark cluster) and cluster B(SQL warehouse). whenever I try to run a particular query using cluster B, it works fine but whenever I try to run same query using cluster A. It's taking time and never show the output

I ran a simple query. It is taking too much time and it doesn't stop running. I am the only one who is using cluster. It's happening to every notebook in the workspace.