elastic/elasticsearch

[Transform] add support for extended_stats and string_stats aggregations

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#51,925 opened on Feb 5, 2020

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:ml/Transform>enhancementTeam:MLhelp wanted

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Description

#51808 added the groundwork for multi value aggregations in general and added percentiles support.

More multi value aggregations should be supported:

  • stats
  • extended stats
  • string stats

Contributor guide

Research direction
Study the existing stats aggregation implementation (e.g., StatsAggregator) and follow the same pattern to implement extended stats and string stats aggregations. Review the groundwork in PR #51808 for percentiles to understand multi value aggregation support.
Tech stack
java
Domain
backend
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
70