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https://issues.apache.org/jira/browse/SPARK-57949?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyukjin Kwon resolved SPARK-57949.
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Fix Version/s: 4.3.0
Assignee: Hyukjin Kwon
Resolution: Fixed
Fixed in https://github.com/apache/spark/pull/57028
> TestDirectWorkerDispatcher picks a UDS socket path too long for macOS
> sun_path limit
> ------------------------------------------------------------------------------------
>
> Key: SPARK-57949
> URL: https://issues.apache.org/jira/browse/SPARK-57949
> Project: Spark
> Issue Type: Bug
> Components: PySpark
> Affects Versions: 5.0.0
> Reporter: Hyukjin Kwon
> Assignee: Hyukjin Kwon
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.3.0
>
>
> In TestDirectWorkerHelpers.scala, shortTempBase() picks the first writable
> temp base among TMPDIR/TEMP/TMP/tmp. On macOS TMPDIR is a long
> /var/folders/<...>/T path (~48 chars); combined with the createTempDirectory
> random suffix and the socket leaf the bound Unix-domain socket path exceeds
> the 104-byte macOS sun_path limit, failing PythonUDFWorkerSpecificationSuite
> with 'OSError: AF_UNIX path too long'. This makes Build / Maven (JDK 21,
> MacOS-26) red. Fix: pick the SHORTEST usable base by its real
> (symlink-resolved) path, so /tmp (-> /private/tmp) is chosen over the long
> TMPDIR on macOS.
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