delta-io/delta

[Kernel] Refactor ParquetBatchReader converter APIs

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#1,859 opened on Jun 23, 2023

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 (3 comments) (0 reactions) (1 assignee)Scala (2,159 forks)batch import
enhancementgood first issuekernelstale

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Description

As noted in the comments here https://github.com/delta-io/delta/pull/1856#discussion_r1239171329 https://github.com/delta-io/delta/pull/1856#discussion_r1239172398 refactor the changes in that PR.

  • Change moveToNextRow() --> moveToNextRow(long index) everywhere
  • Update FileRowIndexColumnConverter to not extend LongColumnConverter

Contributor guide

Research direction
Follow the linked PR discussion and implement the specified refactoring: rename moveToNextRow() to moveToNextRow(long index) throughout the codebase, and modify FileRowIndexColumnConverter to not extend LongColumnConverter.
Tech stack
scala
Domain
backendapi
Issue type
Refactor
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.
1-3 hours
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
ScalaGit
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
60