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https://issues.apache.org/jira/browse/HADOOP-15997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16733278#comment-16733278
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Wei-Chiu Chuang edited comment on HADOOP-15997 at 1/3/19 5:41 PM:
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The test failure is due to HADOOP-16016, unrelated to this patch. It's
triggered by a change in the latest JDK8. So we're all clear.
was (Author: jojochuang):
The test failure is due to HADOOP-16016, unrelated to this patch. It's
triggered by a change in the latest JDK8.
> KMS client uses wrong UGI after HADOOP-14445
> --------------------------------------------
>
> Key: HADOOP-15997
> URL: https://issues.apache.org/jira/browse/HADOOP-15997
> Project: Hadoop Common
> Issue Type: Bug
> Components: kms
> Affects Versions: 3.2.0, 3.0.4, 3.1.2
> Environment: Hadoop 3.0.x (CDH6.x), Kerberized, HDFS at-rest
> encryption, multiple KMS
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Blocker
> Attachments: HADOOP-15997.001.patch, HADOOP-15997.02.patch
>
>
> After HADOOP-14445, KMS client always authenticates itself using the
> credentials from login user, rather than current user.
> {noformat}
> 2018-12-07 15:58:30,663 DEBUG [main]
> org.apache.hadoop.crypto.key.kms.KMSClientProvider: Using loginUser when
> Kerberos is enabled but the actual user does not have either KMS Delegation
> Token or Kerberos Credentials
> {noformat}
> The log message {{"Using loginUser when Kerberos is enabled but the actual
> user does not have either KMS Delegation Token or Kerberos Credentials"}} is
> printed because {{KMSClientProvider#containsKmsDt()}} is null when it
> definitely has the kms delegation token.
> In fact, {{KMSClientProvider#containsKmsDt()}} should select delegation token
> using {{clientTokenProvider.selectDelegationToken(creds)}} rather than
> checking if its dtService is in the user credentials.
> This is done correctly in {{KMSClientProvider#createAuthenticatedURL}} though.
> We found this bug when it broke Cloudera's Backup and Disaster Recovery tool.
>
> [~daryn] [~xiaochen] mind taking a look? HADOOP-14445 is a huge patch but it
> is almost perfect except for this bug.
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