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[Common] Fix ClassLoaderUtils dynamic classpath on JDK 9+#4411

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shangeyao:fix/classloader-utils-jdk11
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[Common] Fix ClassLoaderUtils dynamic classpath on JDK 9+#4411
shangeyao wants to merge 1 commit into
apache:devfrom
shangeyao:fix/classloader-utils-jdk11

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@shangeyao

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Summary

  • Walk the class hierarchy to locate the ucp field on JDK 11+ application classloaders
  • Add JUnit tests for dynamic JAR/directory classpath loading
  • Enable --add-opens in surefire for JDK 9+ test runs on streampark-common

Test plan

  • ./mvnw test -pl streampark-common -Dtest=org.apache.streampark.common.util.ClassLoaderUtilsTest -Dspotless.check.skip=true

Merge order

1/3 — merge this PR first. Part of JDK 11 migration (#4409, #4410).


AI Disclosure

  • Model: Claude (Cursor Agent)
  • Platform/Tool: Cursor
  • Human Oversight: partially reviewed
  • Prompt Summary: Split JDK 11 migration into reviewable PRs; Common ClassLoaderUtils fix

Made with Cursor

Walk the class hierarchy to locate the ucp field on JDK 11+ app
classloaders, add JUnit coverage, and enable surefire add-opens on JDK 9+.

Closes apache#4409 (part 1/3). Ref apache#4410.

Generated-by: Cursor
Co-authored-by: Cursor <cursoragent@cursor.com>
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sonarqubecloud Bot commented Jul 1, 2026

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