JDK-7197662 : (prefs) test/java/util/prefs/AddNodeChangeListener.java fails by timeout or by "couldn't get file lock"
  • Type: Bug
  • Component: core-libs
  • Sub-Component: java.util
  • Affected Version: 7
  • Priority: P4
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2012-09-11
  • Updated: 2013-06-26
  • Resolved: 2012-11-30
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7u40Fixed 8 b68Fixed
Related Reports
Relates :  
fails sometimes by timeout, sometimes with stacktrace
java.util.prefs.BackingStoreException: Couldn't get file lock.
	at java.util.prefs.FileSystemPreferences.sync(FileSystemPreferences.java:730)
	at java.util.prefs.FileSystemPreferences.flush(FileSystemPreferences.java:824)
	at AddNodeChangeListener.addNode(AddNodeChangeListener.java:61)
	at AddNodeChangeListener.main(AddNodeChangeListener.java:47)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:474)
	at com.sun.javatest.regtest.MainWrapper$MainThread.run(MainWrapper.java:94)
	at java.lang.Thread.run(Thread.java:722)

Sometimes test fails with stacktrace
Exception in thread "main" java.lang.RuntimeException: Failed
	at AddNodeChangeListener.main(AddNodeChangeListener.java:54)

Failures in Aurora: http://vmsqe-app.russia.sun.com/surl/LW

The tests in java/util/prefs created new nodes under the user's home directory. This caused the tests to start out with pre-existing preferences and sometimes lead to interference between the tests. This fix was to change the userRoot property for each of these tests so these tests create nodes only under the current directory.

EVALUATION I've marked this bug as incomplete, please tell us which platform this is, ideally the link to the jtreg .jtr file.