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https://issues.apache.org/jira/browse/HADOOP-19212?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18015168#comment-18015168
]
ASF GitHub Bot commented on HADOOP-19212:
-----------------------------------------
steveloughran commented on PR #7886:
URL: https://github.com/apache/hadoop/pull/7886#issuecomment-3206270962
trivial checkstyles need fixing
```
./hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/SubjectUtil.java:35:@Private:1:
Utility classes should not have a public or default constructor.
[HideUtilityClassConstructor]
./hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/SubjectUtil.java:37:
private static MethodHandle CALL_AS;:31: Name 'CALL_AS' must match pattern
'^[a-z][a-zA-Z0-9]*$'. [StaticVariableName]
./hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/SubjectUtil.java:38:
private static MethodHandle CURRENT;:31: Name 'CURRENT' must match pattern
'^[a-z][a-zA-Z0-9]*$'. [StaticVariableName]
./hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/SubjectUtil.java:196:
/**: First sentence should end with a period. [JavadocStyle]
```
> [JDK23] org.apache.hadoop.security.UserGroupInformation use of Subject needs
> to move to replacement APIs
> --------------------------------------------------------------------------------------------------------
>
> Key: HADOOP-19212
> URL: https://issues.apache.org/jira/browse/HADOOP-19212
> Project: Hadoop Common
> Issue Type: Sub-task
> Components: security
> Affects Versions: 3.5.0
> Reporter: Alan Bateman
> Priority: Major
> Labels: pull-request-available
>
> `javax.security.auth.Subject.getSubject` and `Subject.doAs` were deprecated
> for removal in JDK 17. The replacement APIs are `Subject.current` and
> `callAs`. See [JEP 411]([https://openjdk.org/jeps/411]) for background.
> The `Subject.getSubject` API has been "degraded" in JDK 23 to throw
> `UnsupportedOperationException` if not running with the option to allow a
> SecurityManager. In a future JDK release, the `Subject.getSubject` API will
> be degraded further to throw`UnsupportedOperationException` unconditionally.
> [renaissance/issues/439]([https://github.com/renaissance-benchmarks/renaissance/issues/439])
> is a failure with a Spark benchmark due to the code in
> `org.apache.hadoop.security.UserGroupInformation` using the deprecated
> `Subject.getSubject` method. The maintainers of this code need to migrate
> this code to the replacement APIs to ensure that this code will continue to
> work once the security manager feature is removed.
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