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https://issues.apache.org/jira/browse/MNG-7868?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17852366#comment-17852366
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Richard Eckart de Castilho edited comment on MNG-7868 at 6/5/24 10:14 AM:
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Well, that's the information I shared above, right? The lock times out on the
`sentencepiece` and that is contended only by two separate modules - but the
refcount is only 1 interestingly.
There is one other artifact though with a refcount of 2:
{noformat}
[INFO] Name: artifact:com.foo:bar-api:1.2.3
[INFO] RefCount: 2
[INFO] Thread[mvn-builder-module-foo,5,main] -> [exclusive]
[INFO] Thread[mvn-builder-module-bar,5,main] -> [wait-shared]
{noformat}
was (Author: rec):
Well, that's the information I shared above, right? The lock times out on the
`sentencepiece` and that is contended only by two separate modules - but the
refcount is only 1 interestingly.
> "Could not acquire lock(s)" error in concurrent maven builds
> ------------------------------------------------------------
>
> Key: MNG-7868
> URL: https://issues.apache.org/jira/browse/MNG-7868
> Project: Maven
> Issue Type: Bug
> Environment: windows, maven 3.9.4
> Reporter: Jörg Hohwiller
> Priority: Major
> Attachments: image-2024-04-10-15-44-37-013.png, screenshot-1.png
>
>
> {code}
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-install-plugin:3.1.1:install (default-install)
> on project foo.bar: Execution default-install of goal
> org.apache.maven.plugins:maven-install-plugin:3.1.1:install failed: Could not
> acquire lock(s) -> [Help 1]
> {code}
> I am using maven 3.9.4 on windows:
> {code}
> $ mvn -v
> Apache Maven 3.9.4 (dfbb324ad4a7c8fb0bf182e6d91b0ae20e3d2dd9)
> Maven home: D:\projects\test\software\mvn
> Java version: 17.0.5, vendor: Eclipse Adoptium, runtime:
> D:\projects\test\software\java
> Default locale: en_US, platform encoding: UTF-8
> OS name: "windows 10", version: "10.0", arch: "amd64", family: "windows"
> {code}
> I searched for this bug and found issues like MRESOLVER-332 that first look
> identical or similar but do not really seem to be related so I decided to
> create this issue.
> For this bug I made the following observations:
> * it only happens with concurrent builds: {{mvn -T ...}}
> * is seems to be windows related (at least mainly happens on windows)
> * it is in-deterministic and is not so easy to create an isolated and simple
> project and a reproducible scenario that always results in this error.
> However, I get this very often in my current project with many modules (500+).
> * it is not specific to the maven-install-plugin and also happens from other
> spots in maven:
> I also got this stacktrace:
> {code}
> Suppressed: java.lang.IllegalStateException: Attempt 1: Could not acquire
> write lock for
> 'C:\Users\hohwille\.m2\repository\.locks\artifact~com.caucho~com.springsource.com.caucho~3.2.1.lock'
> in 30 SECONDS
> at
> org.eclipse.aether.internal.impl.synccontext.named.NamedLockFactoryAdapter$AdaptedLockSyncContext.acquire
> (NamedLockFactoryAdapter.java:202)
> at org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve
> (DefaultArtifactResolver.java:271)
> at
> org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts
> (DefaultArtifactResolver.java:259)
> at
> org.eclipse.aether.internal.impl.DefaultRepositorySystem.resolveDependencies
> (DefaultRepositorySystem.java:352)
> {code}
> See also this related discussion:
> https://github.com/apache/maven-mvnd/issues/836#issuecomment-1702488377
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