JDK-8361106 : [TEST] com/sun/net/httpserver/Test9.java fails with java.nio.file.FileSystemException
  • Type: Task
  • Component: core-libs
  • Sub-Component: java.net
  • Affected Version: 26
  • Priority: P4
  • Status: Open
  • Resolution: Unresolved
  • Submitted: 2025-06-30
  • Updated: 2025-07-01
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tbdUnresolved
Related Reports
Relates :  
JDK-6475005 - Various regression tests are not cleaning up on exit
Description
com/sun/net/httpserver/Test9.java fails with java.nio.file.FileSystemException due to File lock being held by another process

----------messages:(8/391)----------
command: main -Djava.net.preferIPv6Addresses=true Test9
reason: User specified action: run main/othervm -Djava.net.preferIPv6Addresses=true Test9 
started: Mon Jun 30 16:37:30 UTC 2025
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules jdk.httpserver,java.logging
Process id: 82992
finished: Mon Jun 30 16:37:32 UTC 2025
elapsed time (seconds): 1.903
----------configuration:(3/58)----------
Boot Layer
  add modules: jdk.httpserver java.logging

----------System.out:(1/11)----------
Test9: OK
----------System.err:(17/1790)*----------
java.nio.file.FileSystemException: C:\\sb\\prod\\1751301119\\testoutput\\test-support\\jtreg_open_test_jdk_tier2_part3\\scratch\\5\\com.sun.net.httpserver-Test9-17185654400056668684.tmp: The process cannot access the file because it is being used by another process
	at java.base/sun.nio.fs.WindowsException.translateToIOException(WindowsException.java:92)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:103)
	at java.base/sun.nio.fs.WindowsException.rethrowAsIOException(WindowsException.java:108)
	at java.base/sun.nio.fs.WindowsFileSystemProvider.implDelete(WindowsFileSystemProvider.java:269)
	at java.base/sun.nio.fs.AbstractFileSystemProvider.delete(AbstractFileSystemProvider.java:105)
	at java.base/java.nio.file.Files.delete(Files.java:1052)
	at Test9.main(Test9.java:126)
	at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
	at java.base/java.lang.reflect.Method.invoke(Method.java:565)
	at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
	at java.base/java.lang.Thread.run(Thread.java:1474)

JavaTest Message: Test threw exception: java.nio.file.FileSystemException: C:\\sb\\prod\\1751301119\\testoutput\\test-support\\jtreg_open_test_jdk_tier2_part3\\scratch\\5\\com.sun.net.httpserver-Test9-17185654400056668684.tmp: The process cannot access the file because it is being used by another process
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.nio.file.FileSystemException: C:\\sb\\prod\\1751301119\\testoutput\\test-support\\jtreg_open_test_jdk_tier2_part3\\scratch\\5\\com.sun.net.httpserver-Test9-17185654400056668684.tmp: The process cannot access the file because it is being used by another process
Comments
I see two things can cause this issue: 1. `ClientThread`s started by `test()` that still run (there is a `join()`, but an earlier failure can make that code unreachable) 2. `executor.shutdown()` does not wait for the termination, hence `FileServerHandler` can still be accessing the file IMHO, both needs to be addressed. Alternatively, we can totally remove `Files.delete()` and rely on JTreg test data cleanup. Though a good scout should leave the campsite clean.
01-07-2025