[jira] [Updated] (LOG4J2-3618) Multiple PropertySources with identical priority cannot be added to PropertiesUtil Environment

["Piotr Karwasz (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LOG4J2-3618?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Piotr Karwasz updated LOG4J2-3618:
----------------------------------
    Fix Version/s: 2.24.0

> Multiple PropertySources with identical priority cannot be added to PropertiesUtil Environment
> ----------------------------------------------------------------------------------------------
>
>                 Key: LOG4J2-3618
>                 URL: https://issues.apache.org/jira/browse/LOG4J2-3618
>             Project: Log4j 2
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 2.17.2
>            Reporter: Phillip Webb
>            Priority: Minor
>             Fix For: 2.24.0
>
>
> The {{org.apache.logging.log4j.util.PropertiesUtil.Environment}} maintains a set of {{sources}} by using a {{ConcurrentSkipListSet}} backed with a {{PropertySource.Comparator}}.
> Somewhat surprisingly, the {{ConcurrentSkipListSet}} will not add an item if comparing it to an existing one returns {{0}}. This means that all {{PropertySource}} implementations must have unique {{getPriority()}} results. I think this might be better to use a {{Set}} that uses {{equals/hashCode}} to determine if items can be added and only use the {{Comparator}} for sorting.



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