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https://issues.apache.org/jira/browse/TINKERPOP-2347?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053642#comment-17053642
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ASF GitHub Bot commented on TINKERPOP-2347:
-------------------------------------------
olim7t commented on pull request #1259: TINKERPOP-2347 Remove invalid service
descriptors from gremlin-shaded
URL: https://github.com/apache/tinkerpop/pull/1259
No automated test, but I published a small project to reproduce the issue
[here](https://github.com/olim7t/dummy-jpms).
It's actually only a warning when run from the command line, but I get an
error in IntelliJ IDEA.
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> Remove invalid service descriptors from gremlin-shaded
> ------------------------------------------------------
>
> Key: TINKERPOP-2347
> URL: https://issues.apache.org/jira/browse/TINKERPOP-2347
> Project: TinkerPop
> Issue Type: Bug
> Components: build-release
> Affects Versions: 3.4.5
> Reporter: Olivier Michallat
> Priority: Minor
>
> {{gremlin-shaded.jar}} contains a couple of service descriptors inherited
> from Jackson:
> {code}
> META-INF/services/com.fasterxml.jackson.core.JsonFactory
> META-INF/services/com.fasterxml.jackson.core.ObjectCodec
> {code}
> They still reference unshaded classes, for example in the first one:
> {code}
> com.fasterxml.jackson.core.JsonFactory
> {code}
> This creates a problem if the JAR is used as an automatic module in a JPMS
> application. The module system tries to convert the files into {{provides}}
> directives in the dynamically generated module descriptor, but it checks for
> the existence of the types in the process:
> {code}
> Error occurred during initialization of boot layer
> java.lang.module.FindException: Unable to derive module descriptor for
> /path/to/gremlin-shaded-3.4.5.jar
> Caused by: java.lang.module.InvalidModuleDescriptorException: Provider class
> com.fasterxml.jackson.core.JsonFactory not in module
> {code}
> I didn't find a way to work around this error without modifying the JAR.
> I think the best approach would be to filter out those files during the
> shading process. They were wrong anyway, so it's unlikely that anyone will
> miss them.
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