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https://issues.apache.org/jira/browse/HADOOP-7211?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13248032#comment-13248032
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Todd Lipcon commented on HADOOP-7211:
-------------------------------------
HADOOP-6941 fixed compilation on the IBM JDK using reflection, but added some
code which definitely does not work - eg:
{code}
if (System.getProperty("java.vendor").contains("IBM")) {
principalClass = Class.forName("com.ibm.security.krb5.PrincipalName");
credentialsClass = Class.forName("com.ibm.security.krb5.Credentials");
krb5utilClass = Class.forName("com.ibm.security.jgss.mech.krb5");
{code}
but the krb5utilClass here is invalid, and there doesn't appear to be any
equivalent in the IBM JDK. Instead of this code which kind of looks like it
should work, we should just throw an UnsupportedOperationException until
someone actually fixes this.
> Security uses proprietary Sun APIs
> ----------------------------------
>
> Key: HADOOP-7211
> URL: https://issues.apache.org/jira/browse/HADOOP-7211
> Project: Hadoop Common
> Issue Type: Improvement
> Components: security
> Reporter: Eli Collins
> Assignee: Luke Lu
>
> The security code uses the KrbException, Credentials, and PrincipalName
> classes from sun.security.krb5 and Krb5Util from sun.security.jgss.krb5.
> These may disappear in future Java releases. Also Hadoop does not compile
> using jdks that do not support them, for example with the following IBM JDK.
> {noformat}
> $ /home/eli/toolchain/java-x86_64-60/bin/java -version
> java version "1.6.0"
> Java(TM) SE Runtime Environment (build pxa6460sr9fp1-20110208_03(SR9 FP1))
> IBM J9 VM (build 2.4, JRE 1.6.0 IBM J9 2.4 Linux amd64-64
> jvmxa6460sr9-20110203_74623 (JIT enabled, AOT enabled)
> J9VM - 20110203_074623
> JIT - r9_20101028_17488ifx3
> GC - 20101027_AA)
> JCL - 20110203_01
> {noformat}
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