Kihwal Lee created HDFS-4780:
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Summary: Use the correct relogin method for services
Key: HDFS-4780
URL: https://issues.apache.org/jira/browse/HDFS-4780
Project: Hadoop HDFS
Issue Type: Bug
Components: namenode
Affects Versions: 0.23.8, 3.0.0, 2.0.5-beta
Reporter: Kihwal Lee
A number of components call reloginFromKeytab() before making requests. For
StandbyCheckpointer and SecondaryNameNode, where this can be called frequently,
it generates many WARN messages like this:
WARN security.UserGroupInformation: Not attempting to re-login since the last
re-login was attempted less than 600 seconds before.
Other than these messages, it doesn't do anything wrong. But it will be nice if
it is changed to call checkTGTAndReloginFromKeytab() to avoid the potentially
misleading WARN messages.
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