JackBuggins commented on code in PR #4537:
URL: https://github.com/apache/hadoop/pull/4537#discussion_r917681111


##########
hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/util/PlatformName.java:
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@@ -45,9 +45,34 @@ public class PlatformName {
 
   /**
    * A public static variable to indicate the current java vendor is
-   * IBM java or not.
+   * IBM and the type is Java Technology Edition which provides its
+   * own implementations of many security packages and Cipher suites.
+   * Note that these are not provided in Semeru runtimes:
+   * See https://developer.ibm.com/languages/java/semeru-runtimes/
    */
-  public static final boolean IBM_JAVA = JAVA_VENDOR_NAME.contains("IBM");
+  public static final boolean USE_IBM_JAVA_PACKAGES = shouldUseIbmPackages();
+
+  /*
+  * IBM_JAVA must be preserved due to the public nature of the property.
+  */
+  @Deprecated
+  public static final boolean IBM_JAVA = USE_IBM_JAVA_PACKAGES;

Review Comment:
   Thanks you for the review @steveloughran - I have pushed up another commit 
implementing this suggestion, I am happy to keep it as is - my initial thoughts 
were that the symbols meaning has changed, but the adjustments in the comments 
should be sufficient to keep it clear whilst not changing as many files or 
requiring the deprecation.



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