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From "Valentin Valchev (JIRA)" <j...@apache.org>
Subject [jira] [Created] (FELIX-3986) ThreadDumper comparators are not correctly implemented
Date Thu, 21 Mar 2013 15:07:15 GMT
Valentin Valchev created FELIX-3986:

             Summary: ThreadDumper comparators are not correctly implemented
                 Key: FELIX-3986
                 URL: https://issues.apache.org/jira/browse/FELIX-3986
             Project: Felix
          Issue Type: Bug
          Components: Web Console
    Affects Versions: webconsole-4.0.0
            Reporter: Valentin Valchev
            Assignee: Valentin Valchev
             Fix For: webconsole-4.0.2

The ThreadComparator and ThreadGroupComparator do not handle correctly null values. In embedded
java SE 7 it might cause the following exception:

 java.lang.IllegalArgumentException: Comparison method violates its general contract!
        at java.util.TimSort.mergeHi(TimSort.java:868)
        at java.util.TimSort.mergeAt(TimSort.java:485)
        at java.util.TimSort.mergeCollapse(TimSort.java:408)
        at java.util.TimSort.sort(TimSort.java:214)
        at java.util.TimSort.sort(TimSort.java:173)
        at java.util.Arrays.sort(Arrays.java:659)
        at org.apache.felix.webconsole.internal.misc.ThreadDumper.printThreadGroup(ThreadDumper.java:161)

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