How Do I Address an Incomplete JAR Package Resulting from Parallel Build Tasks?

Symptoms

If the build environment is abnormal or the build mode is improper, the generated JAR package may be missing, but the build result is successful. As a result, the problem is difficult to locate.

• Prerequisites: Project A depends on project B. Both projects are built simultaneously and their respective artifacts, A and B, are uploaded at the same time. This is a typical scenario where multiple users run different build tasks together or the build tasks are configured to run in parallel in the pipeline.
• Build results: Both build task A and build task B succeeded.
• Problem: Artifact B is normal, but artifact A is occasionally incomplete.

Cause Analysis

Since project A depends on project B and both are built simultaneously, project A may begin downloading project B's artifact before it has finished uploading. This can cause project A to receive an incomplete version of the artifact.

Solution

1. Find out all the projects that project A depends on: B1, B2, ... Bn.
2. Check the pipeline settings to confirm if project A and project Bn are set to run in parallel.
3. If they are, modify the pipeline to make A and B run in serial.
4. If they are not, check the build history or build time of A and B to verify if they have run at the same time.