1 Reply Latest reply on Feb 6, 2019 5:55 AM by Trevor Toll

    Connecting Live with Impala and using parameters

    Trevor Toll



      I am connecting Tableau live to Cloudera and using Impala. I have some dimensions in my dashboard that are controllable by parameters. When the user changes them the detail of the graph changes..


      For example/ IF [PARAMETER] = 'Client' THEN [Client]

           ELSEIF [PARAMETER] = 'Region' THEN [Region]

           ELSE 'Other' END


      The problem is, I'm finding that Cloudera/Impala is a bit unpredictable when doing this and is often returning NULL values instead of the dimension values. I can't nail down exactly when it is happening but my suspicion is caching is at play.


      Have anyone experienced this?