3 Replies Latest reply on Aug 3, 2018 10:40 AM by Santiago Sanchez

    Data blending - Extracts the secondary data source

    Venkatesh Badrinathan

      Hi,

      My primary data source - oracle table

      secondary data source - sparksql

       

      my view has a US map with cities connected by straight lines - this metadata comes from primary data source.

       

      then secondary data source shows the metrics for each straight line connecting the cities.

      now when this worksheet loads, instead of firing the query to the secondary data source tableau is extracting all the data into the tableau workbook, then aggregate and shows the data. atleast thats what i see when it says 'importing data'. see attached image.

       

      is this how it is supposed to work? should tableau extract data and then aggregate locally or let the secondary data source aggregate it?

       

      or it is because of sparksql which is causing this issue?

       

      thanks for your inputs.