[MSHADE-148] Shade Plugin gets stuck in infinite loop building dependency reduced POM

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.1
• Fix Version/s: 2.4.1, 3.2.2
• Environment: OS X 10.7.5
• Assignee: Karl Heinz Marbaise
• Reporter: Rob Vesse
• Created: 06/Jun/13 11:31
• Updated: 21/Oct/22 19:53
• Resolved: 06/Jul/15 20:17

Description

I have encountered a bug whereby the shade plugin gets stuck in an infinite loop in the step of creating a dependency reduced POM.

I have attached a minimal POM that reproduces the issue and done some debugging on this. The problem seems to be caused by using both the jar and test-jar version of a dependency (jena-fuseki in my example) while also including a jar dependency that is a transitive dependency of the other dependencies (jena-arq in my example). Removing either the jar/test-jar resolves the problem and so does removing the other jar dependency.

The problem appears to be that the plugin is getting stuck endlessly trying to produce the dependency-reduced-pom.xml

If I watch the file over time it is repeatedly deleted and rewritten, each time it is written it gets larger. When I manage to kill the process at a point where the file is non-empty I can see that the plugin is endlessly adding the same set of <exclusions> to one of the jena-fuseki dependencies.

Issue Links

• blocks: FLINK-20092 [Java 11] Multi-thread Flink compilation not working
• is related to: HTRACE-234 Add workaround to prevent htrace-hbase from getting in an infinite loop while creating the dependency-reduced pom
• relates to: HTRACE-399 Exclude jackson from test dependency on htrace-core4 to avoid infinite loop on creating dependency-reduced-pom
• links to: GitHub Pull Request #16