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https://issues.apache.org/jira/browse/HADOOP-10786?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14137571#comment-14137571
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Hadoop QA commented on HADOOP-10786:
------------------------------------
{color:red}-1 overall{color}. Here are the results of testing the latest
attachment
http://issues.apache.org/jira/secure/attachment/12654166/HADOOP-10786.patch
against trunk revision c0c7e6f.
{color:green}+1 @author{color}. The patch does not contain any @author
tags.
{color:red}-1 tests included{color}. The patch doesn't appear to include
any new or modified tests.
Please justify why no new tests are needed for this
patch.
Also please list what manual steps were performed to
verify this patch.
{color:red}-1 javac{color:red}. The patch appears to cause the build to
fail.
Console output:
https://builds.apache.org/job/PreCommit-HADOOP-Build/4747//console
This message is automatically generated.
> Patch that fixes UGI#reloginFromKeytab on java 8
> ------------------------------------------------
>
> Key: HADOOP-10786
> URL: https://issues.apache.org/jira/browse/HADOOP-10786
> Project: Hadoop Common
> Issue Type: Bug
> Components: security
> Reporter: Tobi Vollebregt
> Assignee: Tobi Vollebregt
> Priority: Minor
> Attachments: HADOOP-10786.patch
>
>
> Krb5LoginModule changed subtly in java 8: in particular, if useKeyTab and
> storeKey are specified, then only a KeyTab object is added to the Subject's
> private credentials, whereas in java <= 7 both a KeyTab and some number of
> KerberosKey objects were added.
> The UGI constructor checks whether or not a keytab was used to login by
> looking if there are any KerberosKey objects in the Subject's private
> credentials. If there are, then isKeyTab is set to true, and otherwise it's
> set to false.
> Thus, in java 8 isKeyTab is always false given the current UGI
> implementation, which makes UGI#reloginFromKeytab fail silently.
> Attached patch will check for a KeyTab object on the Subject, instead of a
> KerberosKey object. This fixes relogins from kerberos keytabs on Oracle java
> 8, and works on Oracle java 7 as well.
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