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Posted to common-issues@hadoop.apache.org by "Istvan Toth (Jira)" <ji...@apache.org> on 2025/11/18 07:12:00 UTC
[jira] [Updated] (HADOOP-19744) Reduce WARN log messages in SubjectUtil.checkThreadInheritsSubject
[ https://issues.apache.org/jira/browse/HADOOP-19744?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Istvan Toth updated HADOOP-19744:
---------------------------------
Summary: Reduce WARN log messages in SubjectUtil.checkThreadInheritsSubject (was: Reduce WARN log messaes in SubjectUtil.checkThreadInheritsSubject)
> Reduce WARN log messages in SubjectUtil.checkThreadInheritsSubject
> ------------------------------------------------------------------
>
> Key: HADOOP-19744
> URL: https://issues.apache.org/jira/browse/HADOOP-19744
> Project: Hadoop Common
> Issue Type: Bug
> Reporter: Istvan Toth
> Assignee: Istvan Toth
> Priority: Major
>
> While the code works fine, it causes Hadoop to emit warnings
> {noformat}
> WARNING: A terminally deprecated method in java.lang.System has been called
> WARNING: System::setSecurityManager has been called by org.apache.hadoop.security.authentication.util.SubjectUtil (file:/Users/stevel/.m2/repository/org/apache/hadoop/hadoop-auth/3.5.0-SNAPSHOT/hadoop-auth-3.5.0-SNAPSHOT.jar)
> WARNING: Please consider reporting this to the maintainers of org.apache.hadoop.security.authentication.util.SubjectUtil
> {noformat}
> The SecurityManager check is only really needed for Java 22-23.
> We can shortcut the check by returning true for JDK21 and earlier and false for JDK24 and later, and only check and emit warnings for 22-23, which are EOL anyway.
> We can also try to duplicate the logic the JVM uses to determine whether SecurityManager is enabled without explicitly calling it, but that would be less robust than the current check.
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