elastic/elasticsearch

Add from(inclusive) and to(exclusive) endpoints to histogram bucket results

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#28,479 opened on Feb 1, 2018

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:Analytics/Aggregations>featureTeam:Analyticshelp wanted

Description

Follow-up to a discuss issue: https://discuss.elastic.co/t/to-get-end-date-of-week-in-date-histogram/116591/2

Displaying the value range that each histogram bar maps to can be problematic for the last bar of the histogram, since the histogram doesn't give the key that the next bucket would have. Is it something we should look into adding to the response?

Contributor guide

Tech stack
javarest api
Domain
backendapi
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
3-5 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Knowledge of Elasticsearch aggregation frameworkJava development experienceUnderstanding of REST API design
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate the discuss thread at https://discuss.elastic.co/t/to get end date of week in date histogram/116591/2 to understand the request. Review the date histogram aggregation implementation in the source code, specifically the bucket class and response builder. Check existing tests for aggregation responses to understand the current key format. Consider adding a 'from' and 'to' field per bucket in the serialized response.