Richard Zhang created HIVE-23195:
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             Summary: set hive.cluster.delegation.token.gc-interval to 15 
minutes instead of an hour
                 Key: HIVE-23195
                 URL: https://issues.apache.org/jira/browse/HIVE-23195
             Project: Hive
          Issue Type: Bug
            Reporter: Richard Zhang
            Assignee: Richard Zhang


the config "hive.cluster.delegation.token.gc-interval" is set as long duration, 
1 hour. This created some issues in a heavy loaded cluster in which the tokens 
may not be cleaned up fast enough and the cleaner thread may fail to clean the 
tokens. This may cause issues like eating too much space or LLAP startup 
failures, or slow system startup.

If this hive.cluster.delegation.token.gc-interval” is reduced from 1 hour to a 
relatively shorter period such as 15 mins, then the zookeeper tokens will be 
cleaned more timely and mitigate these issues.



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