delta-io/delta

[Feature Request] Skip creating FilteredColumnarBatch in ActiveAddFilesIterator if there is no active AddFiles in the batch

Open

#4,941 opened on 2025年7月17日

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 (1 comment) (0 reactions) (0 assignees)Scala (8,807 stars) (2,100 forks)batch import
enhancementgood first issue

説明

Feature request

Which Delta project/connector is this regarding?

  • Spark
  • Standalone
  • Flink
  • Kernel
  • Other (fill in here)

Overview

Today, a FilteredColumnarBatch with no Active AddFiles will be returned as the result of Scan::getScanFiles (also PaginatedScan::getScanFiles() ). We want to skip creating FilteredColumnarBatch in ActiveAddFilesIterator if there is no active AddFiles in the batch.

Motivation

Further details

Willingness to contribute

The Delta Lake Community encourages new feature contributions. Would you or another member of your organization be willing to contribute an implementation of this feature?

  • Yes. I can contribute this feature independently.
  • Yes. I would be willing to contribute this feature with guidance from the Delta Lake community.
  • No. I cannot contribute this feature at this time.

コントリビューターガイド

技術スタック
rust
領域
databasebackend
Issue 種別
feature
難度新しい貢献者にとっての実装難度です。1 は非常に小さな変更、5 は専門的な作業です。
2
推定時間経験ある貢献者が調査、実装、テスト、pull request 準備にかけるおおよその時間範囲です。
under 1 hour
活動状況Issue が今どれだけ取り組みやすいかを示します。新しい、活発、古い、ブロック中、またはメンテナー入力待ちなどです。
fresh
明確さ期待される変更、受け入れ条件、次の手順がどれだけ明確かを示します。
mostly clear
前提条件
familiarity with Delta Kernel codebaseunderstanding of Scan API
初心者向け度初回貢献者にどれだけ取り組みやすいかを 1-100 で推定したスコアです。
40
調査方針
Investigate the ActiveAddFilesIterator class in the Kernel module. The goal is to add a check before creating a FilteredColumnarBatch: if there are no active AddFiles in the current batch, skip creating the FilteredColumnarBatch and continue to the next batch. Look at how FilteredColumnarBatch is created in ActiveAddFilesIterator and modify the logic accordingly. No linked PR yet.