Jason Dere created HIVE-19138:

             Summary: Results cache: allow queries waiting on pending cache 
entries to check cache again if pending query fails
                 Key: HIVE-19138
                 URL: https://issues.apache.org/jira/browse/HIVE-19138
             Project: Hive
          Issue Type: Sub-task
            Reporter: Jason Dere
            Assignee: Jason Dere

HIVE-18846 allows the results cache to refer to currently executing queries so 
that another query can wait for these results to become ready in the results 
cache. If the pending query fails then Hive will automatically skip the cache 
and do the full query compilation. Make a fix here so that if the pending query 
fails, Hive will still try to check the cache again in case the cache has 
another cached/pending result that can be used to answer the query.

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