Spark: Add spark-hadoop-cloud so the S3A magic committer can be used

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难度
4/5
预计耗时
1-2 天
新手友好度
45/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
活跃
技术栈
aws, java, spark

调研方向

Start by identifying the Spark packaging or dependency configuration where spark-hadoop-cloud would be added; this issue does not name a file or repository entry point. Check the package’s dependency tree and consult the supply chain security team about the added components before proposing the change. Done means the package is available for using the S3A magic committer, while enabling it by default and documenting its settings remain out of scope.

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描述

Problem

Background: https://medium.com/@sagarlakshmipathy/stop-renaming-on-s3-what-we-learned-about-s3a-committers-in-spark-3267fb30bbc3

I stumbled over this blog post and thought it was useful.

Super quick summary: Spark writes plain files (Parquet, ORC, CSV) to S3 through FileOutputCommitter v1, which renames every file on the driver at job commit. That's not great for S3 so one can use a different committer (S3A magic committer) but it requires a different package (spark-hadoop-cloud) which we don't include right now.

Iceberg is not affected as far as I understand.

Before merging: Talk to the supply chain security folks to see what effect the added components have. I have no idea which dependencies they pull in.

Expected effort

2 days. If it takes longer, stop and flag it.

Out of scope

  • Making the magic committer the operator default.
  • Documentation of the committer settings, that's a followup in Spark
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这个项目没有提供开发容器、Dockerfile 或贡献指南,环境需要你自己搭建:先看它的 README,通用步骤见我们的新手贡献指南。

从这里开始

  1. 先读完整个 Issue,再读项目的贡献指南。
  2. 在 Issue 下留言说明你要接手 —— 这能避免两个人做同样的事。
  3. Fork 仓库,在一个分支上完成修改。
  4. 提交 Pull Request,并在描述里引用这个 Issue 编号。

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