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https://issues.apache.org/jira/browse/TIKA-4721?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18076944#comment-18076944
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Hudson commented on TIKA-4721:
------------------------------
UNSTABLE: Integrated in Jenkins build Tika » tika-main-jdk17 #1341 (See
[https://ci-builds.apache.org/job/Tika/job/tika-main-jdk17/1341/])
TIKA-4721: Fix TOCTOU race in SharedServerManager port assignment (#2791)
(github:
[https://github.com/apache/tika/commit/4e0340b8a2552d23e7be86a39293a5b0ef0b11f7])
* (edit)
tika-pipes/tika-pipes-core/src/main/java/org/apache/tika/pipes/core/SharedServerManager.java
* (edit)
tika-pipes/tika-pipes-core/src/main/java/org/apache/tika/pipes/core/server/PipesServer.java
> Fix intermittent locale-sensitive test failures in
> tika-pipes-integration-tests on Windows (tr_TR, de_DE)
> ---------------------------------------------------------------------------------------------------------
>
> Key: TIKA-4721
> URL: https://issues.apache.org/jira/browse/TIKA-4721
> Project: Tika
> Issue Type: Bug
> Reporter: Nicholas DiPiazza
> Priority: Minor
>
> h2. Summary
> The *main jdk17 windows build (multi-locale)* CI job fails intermittently on
> the {{main}} branch with test failures in the
> {{tika-pipes-integration-tests}} module ({{Apache Tika pipes core integration
> tests}}). The failures occur specifically under the Turkish ({{tr_TR.UTF-8}})
> and German ({{de_DE.UTF-8}}) locales on Windows runners.
> h2. Evidence
> The following workflow runs on {{main}} failed with this issue before any
> related PR changes:
> * [Run 24999911562|https://github.com/apache/tika/actions/runs/24999911562]
> -- job: build (17, tr_TR.UTF-8)
> * [Run 24942999949|https://github.com/apache/tika/actions/runs/24942999949]
> -- job: build (17, tr_TR.UTF-8)
> * [Run 24924376894|https://github.com/apache/tika/actions/runs/24924376894]
> -- job: build (17, tr_TR.UTF-8)
> * [Run 24887823286|https://github.com/apache/tika/actions/runs/24887823286]
> -- job: build (17, tr_TR.UTF-8)
> The Maven build output shows:
> {noformat}
> [INFO] Apache Tika pipes core integration tests ....... FAILURE [08:57 min]
> [ERROR] Failed to execute goal
> org.apache.maven.plugins:maven-surefire-plugin:3.5.5:test
> (default-test) on project tika-pipes-integration-tests: There are
> test failures.
> {noformat}
> h2. Root Cause (suspected)
> Locale-sensitive string operations (e.g. {{String.toLowerCase()}} /
> {{String.toUpperCase()}} called without an explicit {{Locale}} argument) are
> the most common cause of this class of failure. In Turkish,
> {{"I".toLowerCase()}} produces {{ı}} (dotless i) instead of {{"i"}}, which
> breaks equality checks, map lookups, and assertions that assume English
> casing semantics.
> A {{MockUpperCaseFilter}} in the test suite already uses {{Locale.US}}
> correctly, suggesting awareness of this issue, but the root cause may be in
> production code or config parsing hit by the integration tests.
> h2. Steps to Reproduce
> # Run the {{main-jdk17-windows-build-multi-locale}} GitHub Actions workflow
> on any branch
> # Observe intermittent failures in the {{tika-pipes-integration-tests}}
> module under {{tr_TR.UTF-8}} locale
> h2. Suggested Fix
> # Identify the failing test(s) from the surefire report in a failed CI run
> # Audit all {{toLowerCase()}} / {{toUpperCase()}} calls in {{tika-pipes}} and
> {{tika-pipes-integration-tests}} that do not pass an explicit {{Locale}}
> # Replace with {{toLowerCase(Locale.ROOT)}} / {{toUpperCase(Locale.ROOT)}}
> where locale-independence is intended
> # Consider adding a static analysis rule (e.g. Checkstyle
> {{IllegalMethodCall}} or SpotBugs {{DM_CONVERT_CASE}}) to prevent regressions
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