After creating an index with mapping and bulking same data, I found that Kibana was not detecting the type Date for my field 'date'.
My mapping is
But on kibana when I discover my index I found an ? near date field. Kibana is detecting other fields with same type and formats.
I can't create a vizualisation with with x-Axis as Date Histogram on this field.
Any possible reason for this please?
Thank you all.