Data Insertion taking long time from Nifi to Singlestore DB

[#1]

Dears,

I have a 3 node Nifi cluster. In my flow I am inserting data from an excel sheet to singlestore database by converting it into CSV and then using putdabaserecord processor for insertion, while I am trying to insert 6 lakh records it is taking 1 hour to insert into Singlestore table. Round robin load balancing mechanism is used and each node is having 4 CPU cores. How can I reduce the time taken to insert data into table.

Thanks!