How to calculate the overlap / elapsed time range in elasticsearch?

Elastic Stack Elasticsearch
1

Hi,

I have around million records in ES, they are different online meeting records that people join/leave at the different time.

{name:"p1", join:'2017-11-17T00:01:00.293Z', leave: "2017-11-17T00:06:00.293Z"}
{name:"p2", join:'2017-11-17T00:02:00.293Z', leave: "2017-11-17T00:04:00.293Z"}
{name:"p3", join:'2017-11-17T00:03:00.293Z', leave: "2017-11-17T00:05:00.293Z"}

Time range could be something like this:

 p1: [=========================]
 p2:      [==========]
 p3:            [==========]

The question is how to calculate the overlap time range happened last month, the example one should be 3 min, but I need to calculate the whole month different meetings

2

You could do a max aggregation on the join time, a min aggregation on the leave time and compute the difference between those two values on client-side.

3

@jpountz Thank you for that, but I need to get the result for the whole long period (e.g. a week/month) instead of single meeting call. Do you have any good idea to address that?

4

Is there no unique meeting id associated with these joins and leaves? Is it just one regularly scheduled meeting?