[KAFKA-10787] Introduce an import order in Java sources

• Type: Improvement
• Status: In Progress
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.8.0
• Assignee: Dongjin Lee
• Reporter: Dongjin Lee
• Created: 01/Dec/20 06:07
• Updated: 29/Mar/21 11:57

Description

As of present, Kafka uses a relatively strict code style for Java code, except import order. For this reason, the code formatting settings of every local dev environment are different from person to person, resulting in countless meaningless import order changes in the PR.

This issue aims to define and apply a 3-group import order, like the following:

1. Project packages: kafka., org.apache.kafka.
2. Third Party packages: com., net., org.*
3. Java packages: java., javax.

Discussion Thread: https://lists.apache.org/thread.html/rf6f49c845a3d48efe8a91916c8fbaddb76da17742eef06798fc5b24d%40%3Cdev.kafka.apache.org%3E

Issue Links

• links to: GitHub Pull Request #8404

Sub-Tasks

• Add import ordering checkstyle rule and configure an automatic formatter: In Progress
• Configure automatic formatter for org.apache.kafka.streams.state: In Progress
• Configure automatic formatter for org.apache.kafka.streams.processor: In Progress