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https://issues.apache.org/jira/browse/HDFS-16756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17602165#comment-17602165
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ASF GitHub Bot commented on HDFS-16756:
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ayushtkn merged PR #4853:
URL: https://github.com/apache/hadoop/pull/4853
> RBF proxies the client's user by the login user to enable CacheEntry
> --------------------------------------------------------------------
>
> Key: HDFS-16756
> URL: https://issues.apache.org/jira/browse/HDFS-16756
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: ZanderXu
> Assignee: ZanderXu
> Priority: Major
> Labels: pull-request-available
>
> RBF just proxies the client's user by the login user for Kerberos
> authentication. If the cluster uses the SIMPLE authentication method, the RBF
> will not proxies the client's user by the login user, the downstream
> namespace will not use the real clientIp, clientPort, clientId and callId
> even if the namenode configured dfs.namenode.ip-proxy-users.
>
> And the related code as bellow:
> {code:java}
> UserGroupInformation connUGI = ugi;
> if (UserGroupInformation.isSecurityEnabled()) {
> UserGroupInformation routerUser = UserGroupInformation.getLoginUser();
> connUGI = UserGroupInformation.createProxyUser(
> ugi.getUserName(), routerUser);
> } {code}
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