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From "Charles Duffy (JIRA)" <>
Subject [jira] [Commented] (IVY-1454) OverlappingFileLockException when using artifact-lock-nio
Date Thu, 19 Dec 2013 00:36:07 GMT


Charles Duffy commented on IVY-1454:

...actually, if there's a process boundary between the parent process that first grabs the
lock and the child process that tries to hold it concurrently, this would make a great deal
of sense.

TODO: investigate implementation of antcallback, and whether it involves subprocess execution.

> OverlappingFileLockException when using artifact-lock-nio
> ---------------------------------------------------------
>                 Key: IVY-1454
>                 URL:
>             Project: Ivy
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.4.0
>         Environment: Debian Linux (Wheezy)
> Oracle Java 1.7.0+update45,
> ivy_2.4.0.alpha_20131214174343.jar downloaded from
>            Reporter: Carsten Pfeiffer
>            Assignee: Charles Duffy
>            Priority: Minor
> When trying to use {{artifact-lock-nio}} as the lock strategy, I get resolve errors due
to {{OverlappingFileLockException}} being thrown:
> {code}
> [ivy:resolve] WARN: 	:: org.hamcrest#hamcrest-core;1.1: java.nio.channels.OverlappingFileLockException
> [ivy:resolve] WARN: 	:: org.glassfish#javax.ejb;3.1: java.nio.channels.OverlappingFileLockException
> [ivy:resolve] WARN: 	::;1.1.10.Final: java.nio.channels.OverlappingFileLockException
> {code}
> The reason is probably related to our use of the {{&lt;parallel&gt;}} and {{&lt;antcallback&gt;}}
tasks. The documentation of the {{antcallback}} task is here:
> {code}
> <parallel threadcount="${tests.maxThreads}">
> 	<antcallback target="testsomething" return="tests.failed"/>
> 	<antcallback target="testsomeother" return="tests.failed"/>
> 	<antcallback target="testsomemore" return="tests.failed"/>
> </parallel>
> {code}
> All the testxxx targets perform a resolve before running some junit tests in a separate
vm. These resolve calls appear to cause the {{OverlappingFileLockException}}.

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