In this blog we are going to cover how to connect CSV files in Helical Insight 5.1 via apache drill It will also support flat files like excel ,json , parquet files etc ( process will be same as CSV)
Follow below steps :
1. Download, install and start Apache Drill. To learn how to install Drill please follow below blog
https://www.helicalinsight.com/drill-installation-helical-insight/
2. Once it is up you can access the Apache drill UI at https://
3. Go to storage and click on update of dfs. We should make the following changes in the configuration.
Inside root > provide your location where your CSV file are present
Make sure to create a folder and keep only csv files inside
Ex :
“location”: “D:/000_Helical5.1/HYRGPT/hi/hi-repository/CSV/”,
And update “writable”: true
and also add “extractHeader”: true property for CSV json (only csv and excel need this property)
Once all the changes are done click on update
4. Now create data source connection in Helical Insight 5.1
Click on test Connection once it is successful then save the data source and create metadata using the same connection
5. Save the metadata and create report
NOTE : Drill converts all the columns data type as text , we should convert data types as using DB functions / custom column/view in metadata in Helical Insight. You can refer to our other blogs to learn how to use them.