[Feature Request][SPARK] Make Vacuum DRY RUN list all the files along with the the size of the files · delta-io/delta#3247

(4 留言) (0 反應) (1 負責人)Scala (8,807 star) (2,100 fork)batch import

enhancementgood first issue

描述

Feature request

Which Delta project/connector is this regarding?

Overview

As of now, Vacuum dry run mode returns a dataframe containing a list of first 1000 files to be deleted. Instead, it's more useful to return all the eligible files to be deleted along with the size of these files.

Motivation

Today, users run Vacuum in dry run mode to understand the eligible files and the size of the data that is going to be deleted. By returning only a sample of 1000 files, users are not able to achieve their objective.

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.

貢獻者指南

技術棧: scalasql
領域: datadatabase
議題類型: feature
難度: 3
預計時間: half day
活動狀態: active
清晰度: clear
前置要求: Delta Lake basicsSpark SQLScala
新手友善度: 60
研究方向: The issue requests modifying Vacuum's dry run mode to return all eligible files with their sizes instead of the current 1000 file limit. Start by locating the Vacuum command implementation in the Delta Lake Spark source code (likely in `src/main/scala/org/apache/spark/sql/delta/commands/VacuumCommand.scala`). Identify where the dry run result is truncated (e.g., `take(1000)` or `limit(1000)`). Replace that with the full list and add file size information, possibly by accessing `FileStatus` for each file. Ensure backward compatibility and update any documentation. Look at existing tests for Vacuum to understand expected behavior.