Jason Dere created HIVE-19154:

             Summary: Poll notification events to invalidate the results cache
                 Key: HIVE-19154
                 URL: https://issues.apache.org/jira/browse/HIVE-19154
             Project: Hive
          Issue Type: Sub-task
            Reporter: Jason Dere
            Assignee: Jason Dere

Related to the work for HIVE-18609. HIVE-18609 will only invalidate entries in 
the cache if that query looked up again, which could potentially leave a lot of 
undetected invalid entries in the cache taking up space which could cause other 
entries to be evicted. To remove these entries in a more timely fashion, have a 
background thread to periodically check the notification events for updates to 
the tables used in the results cache.

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