KNOWLEDGE BASE

Warning Message "sun.reflect.Reflection.getCallerClass is not supported. This will impact performance." Shown When Running Prep CLI


Published: 03 Jun 2022
Last Modified Date: 03 Jun 2022

Issue

Tableau Prep CLI returns a warning message upon running any flows:

"sun.reflect.Reflection.getCallerClass is not supported. This will impact performance." 

Environment

  • Tableau Prep Builder 2021.1

Resolution

Upgrade to Tableau Prep Builder later than 2021.2.1.
 

Cause

This is a known issue that is resolved in more recent version of Tableau Prep Builder. 

Additional Information

This warning message is benign and the flow still completes. 
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