NullPointer in FileCleaner causes infinite loop
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Key: WICKET-1065
URL: https://issues.apache.org/jira/browse/WICKET-1065
Project: Wicket
Issue Type: Bug
Components: wicket
Affects Versions: 1.3.0-beta4
Environment: OpenSuse 10.3, Java 1.6.0 update 3, Apache Tomcat 5.5.25,
Eclipse 3.3.0
Reporter: Geir Ove Grønmo
While hot deploying a Wicket application from Eclipse to a Tomcat instance the
"File Reaper" thread seems to go into an infinite loop making the CPU running
at 100%. From the thread dump it is clear that a NullPointerException is being
thrown on line 61 in FileCleaner.java. Looking at the source code reveals that
the ReferenceQueue q member in FileCleaner is null.
"File Reaper" daemon prio=10 tid=0x08265c00 nid=0x18cf runnable
[0x9a2d9000..0x9a2d9f30]
java.lang.Thread.State: RUNNABLE
at java.lang.Throwable.fillInStackTrace(Native Method)
- locked <0x701b0000> (a java.lang.NullPointerException)
at java.lang.Throwable.<init>(Throwable.java:181)
at java.lang.Exception.<init>(Exception.java:29)
at java.lang.RuntimeException.<init>(RuntimeException.java:32)
at java.lang.NullPointerException.<init>(NullPointerException.java:36)
at org.apache.wicket.util.file.FileCleaner$1.run(FileCleaner.java:61)
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