Hi alexgv12 ,
You can change the chunk size by going to Admin > Datasources > Cogwheel and change the chunksize (on Windows).
In linux you have to go to Admin > System Management > Configuration > Elasticube build params .
I would advice you to confer with support on this one. Increasing chunksize does not necessarily lower build times. More rows per chunk means more rows need to be imported and processed at the same time. To increase build times you could check
- general resource usage of the server during builds
- free diskspace
- resources usage of the source you are importing from
- reading/writing speeds of data on the server
- internet connection
I have a table of around 100.000.000 records which is loaded within 15 minutes. You could also investigate if you need to import all data every build. Perhaps its possible to only load changes/new data which would speed up the process
Hamza