[IVY-1454] OverlappingFileLockException when using artifact-lock-nio

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.4.0
• Fix Version/s: 2.4.0-RC1
• Component/s: Core

Environment

Debian Linux (Wheezy)
Oracle Java 1.7.0+update45,
ivy_2.4.0.alpha_20131214174343.jar downloaded from https://builds.apache.org/job/Ivy/446/

• Assignee: Charles Duffy
• Reporter: Carsten Pfeiffer
• Created: 18/Dec/13 09:14
• Updated: 26/Mar/14 21:59
• Resolved: 19/Dec/13 21:46

Description

When trying to use artifact-lock-nio as the lock strategy, I get resolve errors due to OverlappingFileLockException being thrown:

[ivy:resolve] WARN: 	:: org.hamcrest#hamcrest-core;1.1: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)
[ivy:resolve] WARN: 	:: org.glassfish#javax.ejb;3.1: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)
[ivy:resolve] WARN: 	:: org.jboss.weld.se#weld-se-core;1.1.10.Final: java.nio.channels.OverlappingFileLockException at sun.nio.ch.SharedFileLockTable.checkList(FileLockTable.java:255)

The reason is probably related to our use of the <parallel> and <antcallback> tasks. The documentation of the antcallback task is here: http://ant-contrib.sourceforge.net/tasks/tasks/antcallback_task.html

<parallel threadcount="${tests.maxThreads}">
	<antcallback target="testsomething" return="tests.failed"/>
	<antcallback target="testsomeother" return="tests.failed"/>
	<antcallback target="testsomemore" return="tests.failed"/>
</parallel>

All the testxxx targets perform a resolve before running some junit tests in a separate vm. These resolve calls appear to cause the OverlappingFileLockException.