Principle:Apache Spark PR Merge Workflow
| Knowledge Sources | |
|---|---|
| Domains | DevOps, Version_Control |
| Last Updated | 2026-02-08 22:00 GMT |
Overview
Standardized process for merging GitHub pull requests into the Apache Spark repository with consistent commit formatting, author attribution, and issue tracking.
Description
The PR Merge Workflow principle defines how Apache Spark committers integrate contributions from GitHub pull requests into the main repository. The workflow enforces: (1) standardized commit message formatting using the `[SPARK-XXXXX][MODULE]` convention, (2) squash merging to maintain a clean linear history, (3) proper author attribution by identifying the primary contributor from commit history, (4) cherry-picking to maintenance branches for backports, and (5) automatic JIRA issue management (resolution, fix version tagging, contributor role assignment). This process ensures traceability between code changes, GitHub PRs, and JIRA issues.
Usage
Apply this principle whenever merging a pull request into the Apache Spark repository. The standardized merge process is mandatory for all committers to maintain consistency in the project's version control history and issue tracking.
Theoretical Basis
The PR merge workflow follows the gated integration pattern common in large open-source projects:
- Title Normalization: Regex-based parsing ensures every commit follows `[SPARK-XXXXX][MODULE] Description` format
- Squash Merge: Multiple PR commits are collapsed into a single merge commit for clean history
- Author Resolution: The most frequent commit author is proposed as primary, with interactive override
- Cherry-Pick Propagation: Merged changes can be selectively backported to release branches
- Issue Lifecycle Management: Automatic state transitions on the issue tracker (resolve, assign, tag versions)
Pseudo-code Logic:
# Abstract algorithm description
title = normalize_title(pr_title) # Enforce [SPARK-XXX][MOD] format
merge_hash = squash_merge(pr, target_branch)
author = resolve_primary_author(pr_commits)
for branch in maintenance_branches:
cherry_pick(merge_hash, branch)
resolve_jira_issue(jira_id, fix_versions)