delta-io/delta

[Feature Request] Automatically generate partition filters for generated columns using the ceiling function

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#1,443 opened on Oct 18, 2022

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 (1 comment) (0 reactions) (1 assignee)Scala (2,100 forks)batch import
enhancementgood first issue

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Description

See #1442

We can automatically generated partition filters when a partition column is generated by the ceil function.

i.e. if x < y then ceil(x) <= ceil(y)

Contributor guide

Research direction
Investigate how ceil function generates partition filters and implement similar logic for generated columns.
Tech stack
scala
Domain
database
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
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.
Mostly clear
Prerequisites
ScalaSparkDelta Lake
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
50