Token expiration

OpenText™ Analytics Database uses Hadoop tokens when using Kerberos tickets (Using Kerberos with OpenText™ Analytics Database) or doAs (User impersonation (doAs)). The database attempts to automatically refresh Hadoop tokens before they expire, but you can also set a minimum refresh frequency if you prefer. Use the HadoopFSTokenRefreshFrequency configuration parameter to specify the frequency in seconds:

=> ALTER DATABASE exampledb SET HadoopFSTokenRefreshFrequency = '86400';

If the current age of the token is greater than the value specified in this parameter, the database refreshes the token before accessing data stored in HDFS.

The database does not refresh delegation tokens (Bring your own delegation token).