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https://issues.apache.org/jira/browse/FLINK-27754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17541362#comment-17541362
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Danny Cranmer commented on FLINK-27754:
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PR: https://github.com/apache/flink/pull/19721
> Getting Flink config fails if multiple files in /lib match flink-dist-*
> -----------------------------------------------------------------------
>
> Key: FLINK-27754
> URL: https://issues.apache.org/jira/browse/FLINK-27754
> Project: Flink
> Issue Type: Improvement
> Reporter: Rudi Kershaw
> Assignee: Rudi Kershaw
> Priority: Minor
> Fix For: 1.16.0
>
>
> h3. Background
> When adding jars to the {{/lib}} directory any extra jar files that match the
> pattern {{flink-dist*.jar}} provoke an error when trying to use
> {{BashJavaUtils}} to get JVM parameters and dynamic configurations in
> {{{}config.sh{}}}. Although niche, this can be difficult to debug because
> there is no error message to describe the specific issue.
> We already print a useful error message if no {{flink-dist*.jar}} can be
> found at all. This pull request adds another error message when more than one
> {{flink-dist*.jar}} is found at this point.
> h3. Reproduction Steps
> # ./mvnw clean install -DskipTests -Dfast
> # cp flink-dist-scala/target/flink-dist-scala_2.12-1.16-SNAPSHOT.jar
> build-target/lib/
> # build-target/bin/start-cluster.sh
> # You should a vague error message "NoClassDefinition" or similar.
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