Pipeline aggregations
Pipeline aggregations, as their name suggests, allow you to aggregate over the result of another aggregation. They let you pipe the result of an aggregation as an input to another aggregation. Pipeline aggregations are a relatively new feature and they are still experimental. At a high level, there are two types of pipeline aggregation:
- Parent pipeline aggregations have the pipeline aggregation nested inside other aggregations
- Sibling pipeline aggregations have the pipeline aggregation as the sibling of the original aggregation from which pipelining is done
Let us understand how the pipeline aggregations work by taking one example of cumulative sum aggregation, which is a parent of pipeline aggregation.
Calculating the cumulative sum of usage over time
While understanding the Date Histogram aggregation and in the section Focusing on a specific day and changing intervals, we looked at the aggregation, to compute hourly bandwidth usage for one particular day. After completing...
