Sandeep Guggilam created HADOOP-17159:
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Summary: Ability for forceful relogin in UserGroupInformation class
Key: HADOOP-17159
URL: https://issues.apache.org/jira/browse/HADOOP-17159
Project: Hadoop Common
Issue Type: Improvement
Reporter: Sandeep Guggilam
Currently we have a relogin() method in UGI which attempts to login if there is
no login attempted in the last 10 minutes or configured amount of time
We should also have provision for doing a forceful relogin irrespective of the
time window that the client can choose to use it if needed . Consider the below
scenario:
# SASL Server is reimaged and new keytabs are fetched with refreshing the
password
# SASL client connection to the server would fail when it tries with the
cached service ticket
# We should try to logout to clear the service tickets in cache and then try
to login back in such scenarios. But since the current relogin() doesn't
guarantee a login, it could cause an issue
# A forceful relogin in this case would help after logout
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