[MJAR-188] maven-jar-plugin is very slow on machines with slow Unix group lookups

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.6
• Environment: Ubuntu Trusty, OpenJDK 7 (modified)
• Assignee: Kristian Rosenvold
• Reporter: Brian Slesinsky
• Created: 29/Oct/14 23:40
• Updated: 30/Oct/14 16:05
• Resolved: 30/Oct/14 12:19

Description

While building a Maven project, it appeared to hang while packaging a large jar. Running jstack showed that it was getting stuck in the Java 7 implementation of getgrgid. It looks like it's doing this for every file and there are lots of files. This is already fixed in plexus-io-2.0.5 [1] but Maven needs to upgrade to the new version.

A workaround is to patch it in the the pom, such as [2]. However, this needs to be done in each project.

This isn't easy to reproduce; I've seen it on some machines but not others.

[1] http://jira.codehaus.org/browse/PLXCOMP-203
[2] https://gwt-review.googlesource.com/#/c/10050/1/pom.xml