I am very new to Elasticsearch and I am working on a project where I have a source producing events data. I am then visualising this data within Kibana.
The issue is one of the fields, of the events data being outputted, has type string and I want to convert it into an integer.
I have no access to the source creating the data and Injest Nodes is not an option as I'm currently restricted to Elasticsearch v2.4.
So how do I write this transformation from String to Integer for this data coming into elasticsearch? And how?
Thanks in advance.