KNOWLEDGE BASE

Bad Connection Or 9F80FB23 Error When Connecting To Databricks


Published: 22 Jan 2020
Last Modified Date: 06 Aug 2020

Issue

Spark SQL Bad Connection or 9F80FB23 error is displayed if the data source is Databricks and using LOD functions.

Environment

  • Tableau Desktop 2019.3 and later
  • Databricks

Resolution

Upgrade to the latest version of Tableau Desktop.

Cause

By default, spark.sql.crossJoin.enabled is set to false in Databricks clusters and it causes the error. The new Databricks connector bundled in the latest Tableau Desktop has a feature to change the config to true automatically. 
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