I am trying to do cummulative min chart in kibana , is there a possibility to do that
Kibana uses Elasticsearch aggregations under the hood. Elasticsearch currently doesn't support a cummulative min aggregation, but I think it's a valid use case - feel free to open a feature request in the Github repo: https://github.com/elastic/elasticsearch/issues/new?labels=>enhancement%2Cneeds%3Atriage&template=feature-request.md
As cumulative sum is a relatively cheap calculation, another option would be to use vega (https://www.elastic.co/guide/en/kibana/current/vega-graph.html) and doing the postprocessing directly in the chart - there's a steep learning curve though.
Thanks @flash1293 I have raised a ticket in the gitplatform