Hello Databricks Community,
I’m facing multiple issues while working in Azure Databricks notebooks, and I’d appreciate guidance or troubleshooting suggestions.
Issue 1: Failed to reconnect
While running a notebook, I frequently see a “Failed to reconnect” message in the UI.
Error details:
org.apache.http.conn.HttpHostConnectException:
Connect to westus.azuredatabricks.net:443 [10.115.69.106] failed: Connection timed out (Connection timed out)This causes the notebook to stay in a Waiting state and prevents execution.
Issue 2: Network connection timeout
The error suggests a timeout while connecting to the Databricks control plane (westus.azuredatabricks.net:443).
This occurs intermittently and impacts productivity.
Issue 3: Notebooks taking longer than expected to run
Even when the notebook starts successfully:
Jobs take significantly longer than expected
Some cells remain in Waiting state for a long time
Performance degradation is noticeable compared to earlier runs
Environment details:
Azure Databricks (Region: West US)
Notebook language: Python (PySpark)
Workload includes reading/transformation and writing data to Snowflake
Issue observed across multiple notebooks
