Mailing-List: contact common-issues-help@hadoop.apache.org; run by ezmlm
Precedence: bulk
Date: Fri, 27 Jan 2017 02:22:24 +0000 (UTC)
From: "Xiaoyu Yao (JIRA)" <jira@apache.org>
To: common-issues@hadoop.apache.org
Message-ID: <JIRA.13034767.1484330952000.9700.1485483744501@Atlassian.JIRA>
In-Reply-To: <JIRA.13034767.1484330952000@Atlassian.JIRA>
References: <JIRA.13034767.1484330952000@Atlassian.JIRA> <JIRA.13034767.1484330952824@jira-lw-us.apache.org>
Subject: [jira] [Commented] (HADOOP-13988) KMSClientProvider does not work
 with WebHDFS and Apache Knox w/ProxyUser
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Fri, 27 Jan 2017 02:22:30 -0000


    [ https://issues.apache.org/jira/browse/HADOOP-13988?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15840849#comment-15840849 ] 

Xiaoyu Yao commented on HADOOP-13988:
-------------------------------------

Open HADOOP-14029 to fix the non-secure proxy use case and resolve this one.

> KMSClientProvider does not work with WebHDFS and Apache Knox w/ProxyUser
> ------------------------------------------------------------------------
>
>                 Key: HADOOP-13988
>                 URL: https://issues.apache.org/jira/browse/HADOOP-13988
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: common, kms
>    Affects Versions: 2.8.0, 2.7.3
>         Environment: HDP 2.5.3.0 
> WebHDFSUser --> Knox --> HA NameNodes(WebHDFS) --> DataNodes
>            Reporter: Greg Senia
>            Assignee: Xiaoyu Yao
>             Fix For: 2.9.0, 3.0.0-alpha3
>
>         Attachments: HADOOP-13988.01.patch, HADOOP-13988.02.patch, HADOOP-13988.03.patch, HADOOP-13988.patch, HADOOP-13988.patch
>
>
> After upgrading to HDP 2.5.3.0 noticed that all of the KMSClientProvider issues have not been resolved. We put a test build together and applied HADOOP-13558 and HADOOP-13749 these two fixes did still not solve the issue with requests coming from WebHDFS through to Knox to a TDE zone.
> So we added some debug to our build and determined effectively what is happening here is a double proxy situation which does not seem to work. So we propose the following fix in getActualUgi Method:
> {noformat}
>      }
>      // Use current user by default
>      UserGroupInformation actualUgi = currentUgi;
>      if (currentUgi.getRealUser() != null) {
>        // Use real user for proxy user
>        if (LOG.isDebugEnabled()) {
> 	   LOG.debug("using RealUser for proxyUser);
> 	}
>        actualUgi = currentUgi.getRealUser();
>        if (getDoAsUser() != null) {
>       	  if (LOG.isDebugEnabled()) {
> 		LOG.debug("doAsUser exists");
> 		LOG.debug("currentUGI realUser shortName: {}", currentUgi.getRealUser().getShortUserName());
> 		LOG.debug("processUGI loginUser shortName: {}", UserGroupInformation.getLoginUser().getShortUserName());
>           }
>     	  if (currentUgi.getRealUser().getShortUserName() != UserGroupInformation.getLoginUser().getShortUserName()) {
>     		  if (LOG.isDebugEnabled()) {
> 		  	LOG.debug("currentUGI.realUser does not match UGI.processUser);
> 		  }
> 		  actualUgi = UserGroupInformation.getLoginUser();
> 		  if (LOG.isDebugEnabled()) {
> 	    	  	LOG.debug("LoginUser for Proxy: {}", actualUgi.getLoginUser());
> 		  }
>      	  }
>        }
> 	
>      } else if (!currentUgiContainsKmsDt() &&
>          !currentUgi.hasKerberosCredentials()) {
>        // Use login user for user that does not have either
>        // Kerberos credential or KMS delegation token for KMS operations
>        if (LOG.isDebugEnabled()) {
> 	   LOG.debug("using loginUser no KMS Delegation Token no Kerberos Credentials");
> 	}
>        actualUgi = currentUgi.getLoginUser();
>      }
>      return actualUgi;
>    }
> {noformat}


--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

---------------------------------------------------------------------
To unsubscribe, e-mail: common-issues-unsubscribe@hadoop.apache.org
For additional commands, e-mail: common-issues-help@hadoop.apache.org