How to analyse CSV data with Elastic stack

Hi!

Imagine that we have to analyse a big amount of users data. At this article there will be a data in CSV format.

For example, we can have a data in next format:

First column is user’s phone number, second column is date in YYMMDD format, third is a city, and the last one is a billed amount for this phone number for this day.

It would be great to get some aggregated info by data/cities/etc. To perform this aggregations for a huge amount of data we can use ELK-stack.

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