8270171: Shenandoah: Cleanup TestStringDedup and TestStringDedupStress tests

[shipilev]

Clean backport to improve testing.

Additional testing:

• Affected test still pass

---

Progress

• Change must not contain extraneous whitespace
• Commit message must refer to an issue

Issue

• JDK-8270171: Shenandoah: Cleanup TestStringDedup and TestStringDedupStress tests

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.java.net/jdk17u pull/58/head:pull/58
$ git checkout pull/58

Update a local copy of the PR:
$ git checkout pull/58
$ git pull https://git.openjdk.java.net/jdk17u pull/58/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 58

View PR using the GUI difftool:
$ git pr show -t 58

Using diff file

Download this PR as a diff file:
https://git.openjdk.java.net/jdk17u/pull/58.diff

[bridgekeeper]

👋 Welcome back shade! 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]

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

[openjdk]

@shipilev 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:

8270171: Shenandoah: Cleanup TestStringDedup and TestStringDedupStress tests

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 10 new commits pushed to the master branch:

• e1cd6c7: 8269280: (bf) Replace StringBuffer in *Buffer.toString()
• ad04269: 8269924: Shenandoah: Introduce weak/strong marking asserts
• 3623ea6: 8273150: Revert "8225083: Remove Google certificate that is expiring in December 2021"
• 5e04e45: 8269993: [Test]: java/net/httpclient/DigestEchoClientSSL.java contains redundant @run tags
• ff6a938: 8272581: sun/security/pkcs11/Provider/MultipleLogins.sh fails after JDK-8266182
• 9248bd0: 8266182: Automate manual steps listed in the test jdk/sun/security/pkcs12/ParamsTest.java
• 671dab6: 8269934: RunThese24H.java failed with EXCEPTION_ACCESS_VIOLATION in java_lang_Thread::get_thread_status
• 71a6aae: 8272806: [macOS] "Apple AWT Internal Exception" when input method is changed
• 20d00eb: 8270344: Session resumption errors
• 37de147: 8269897: Shenandoah: Resolve UNKNOWN access strength, where possible

Please see this link for an up-to-date comparison between the source branch of this pull request and the master branch.
As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[mlbridge]

Webrevs

• 00: Full (c430e445)

[shipilev]

Got the push approval.

/integrate

[openjdk]

Going to push as commit c96cfed.
Since your change was applied there have been 14 commits pushed to the master branch:

• f32703f: 8272783: Epsilon: Refactor tests to improve performance
• 0ced2aa: 8272473: Parsing epoch seconds at a DST transition with a non-UTC parser is wrong
• ea6e678: 8271560: sun/security/ssl/DHKeyExchange/LegacyDHEKeyExchange.java still fails due to "An established connection was aborted by the software in your host machine"
• 271403b: 8269031: linux x86_64 check for binutils 2.25 or higher after 8265783
• e1cd6c7: 8269280: (bf) Replace StringBuffer in *Buffer.toString()
• ad04269: 8269924: Shenandoah: Introduce weak/strong marking asserts
• 3623ea6: 8273150: Revert "8225083: Remove Google certificate that is expiring in December 2021"
• 5e04e45: 8269993: [Test]: java/net/httpclient/DigestEchoClientSSL.java contains redundant @run tags
• ff6a938: 8272581: sun/security/pkcs11/Provider/MultipleLogins.sh fails after JDK-8266182
• 9248bd0: 8266182: Automate manual steps listed in the test jdk/sun/security/pkcs12/ParamsTest.java
• ... and 4 more: https://git.openjdk.java.net/jdk17u/compare/648f3f6a8fe9ea2e00b60710afa44208cfbc2c49...master

Your commit was automatically rebased without conflicts.

[openjdk]

@shipilev Pushed as commit c96cfed.

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