[jira] [Closed] (FELIX-3986) ThreadDumper comparators are not correctly implemented

["Felix Meschberger (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/FELIX-3986?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Felix Meschberger closed FELIX-3986.
------------------------------------


Close after release
                
> 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-4.2.0
>
>
> 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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