8298783: java/lang/ref/FinalizerHistogramTest.java failed with "RuntimeException: MyObject is not found in test output"

[sendaoYan]

Hi all,

This pull request contains a backport of commit fe29cad5 from the openjdk/jdk repository.

The commit being backported was authored by Brent Christian on 6 May 2025 and was reviewed by Kim Barrett and Jaikiran Pai.

Thanks!

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8298783 needs maintainer approval

Issue

• JDK-8298783: java/lang/ref/FinalizerHistogramTest.java failed with "RuntimeException: MyObject is not found in test output" (Bug - P4 - Approved)

Reviewing

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Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk17u-dev.git pull/3869/head:pull/3869
$ git checkout pull/3869

Update a local copy of the PR:
$ git checkout pull/3869
$ git pull https://git.openjdk.org/jdk17u-dev.git pull/3869/head

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Checkout this PR locally:
$ git pr checkout 3869

View PR using the GUI difftool:
$ git pr show -t 3869

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https://git.openjdk.org/jdk17u-dev/pull/3869.diff

Using Webrev

Link to Webrev Comment

[bridgekeeper]

👋 Welcome back syan! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@sendaoYan This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8298783: java/lang/ref/FinalizerHistogramTest.java failed with "RuntimeException: MyObject is not found in test output"

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[openjdk]

This backport pull request has now been updated with issue from the original commit.

[openjdk]

⚠️ @sendaoYan This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[mlbridge]

Webrevs

• 09: Full - Incremental (1eea5924)
• 08: Full - Incremental (a32e54f9)
• 07: Full - Incremental (c983df0d)
• 06: Full - Incremental (44af9bda)
• 05: Full - Incremental (b5a073b4)
• 04: Full - Incremental (e6ca83ac)
• 03: Full - Incremental (e3130f79)
• 02: Full - Incremental (675e716d)
• 01: Full - Incremental (4af8ce35)
• 00: Full (813c2d7c)

[sendaoYan]

/approval request Clean backport to make test more robustness which fix the test fails intermittent. Change has been verifiled locally on linux-x64. Test-fix only, risk is low.

[sendaoYan]

I have merge the master, try to fix the other test failure.

[openjdk]

@sendaoYan
8298783: The approval request has been created successfully.

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@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!

[sendaoYan]

Sorry, the backport PR make this test compilation fails:

/Users/runner/work/jdk17u-dev/jdk17u-dev/test/jdk/java/lang/ref/FinalizerHistogramTest.java:76: error: cannot find symbol
                refProResult = wb.waitForReferenceProcessing();
                                 ^
  symbol:   method waitForReferenceProcessing()
  location: variable wb of type WhiteBox

[sendaoYan]

I think we need to backport JDK-8305186 first.

[bridgekeeper]

@sendaoYan This pull request has been inactive for more than 4 weeks and will be automatically closed if another 4 weeks passes without any activity. To avoid this, simply issue a /touch or /keepalive command to the pull request. Feel free to ask for assistance if you need help with progressing this pull request towards integration!