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Posted to common-issues@hadoop.apache.org by "Sunil Govindan (JIRA)" <ji...@apache.org> on 2019/01/02 09:35:00 UTC
[jira] [Commented] (HADOOP-15997) KMS client uses wrong UGI after
HADOOP-14445
[ https://issues.apache.org/jira/browse/HADOOP-15997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16731878#comment-16731878 ]
Sunil Govindan commented on HADOOP-15997:
-----------------------------------------
Jenkins seems fine with the patch apart from test issue. [~jojochuang] cud u pls check test failure. if no objections, i ll help to commit this patch by tomorrow.
cc [~templedf] [~daryn] [~xiaochen]
> 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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