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https://issues.apache.org/jira/browse/HADOOP-9975?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13770001#comment-13770001
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Kai Zheng commented on HADOOP-9975:
-----------------------------------
This was inspired by related discussion in HDFS-3676. Reference
https://issues.apache.org/jira/browse/HDFS-3676?focusedCommentId=13417152&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13417152,
Daryn mentioned:
bq. On an aside, it seems odd there isn't a UGI#relogin() that determines if it
should use a keytab, ticket cache, etc... Not sure why all the callers that
want to relogin should have knowledge of the login method.
> Adding relogin() method to UGI
> ------------------------------
>
> Key: HADOOP-9975
> URL: https://issues.apache.org/jira/browse/HADOOP-9975
> Project: Hadoop Common
> Issue Type: Improvement
> Reporter: Kai Zheng
> Assignee: Kai Zheng
>
> In current Hadoop UGI implementation, it has API methods like
> reloginFromKeytab() and reloginFromTicketCache(). However, such methods are
> too Kerberos specific and also involves login implementation details, it
> would be better to add generic relogin() method regardless authentication
> mechanism. This is possible since relevant authentication specific parameters
> like principal and keytab are already passed and saved in the UGI object
> after initial login.
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