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From "Navis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HIVE-11752) Pre-materializing complex CTE queries
Date Tue, 08 Sep 2015 01:55:46 GMT
Navis created HIVE-11752:
----------------------------

             Summary: Pre-materializing complex CTE queries
                 Key: HIVE-11752
                 URL: https://issues.apache.org/jira/browse/HIVE-11752
             Project: Hive
          Issue Type: Improvement
          Components: Query Processor
            Reporter: Navis
            Assignee: Navis
            Priority: Minor


Currently, hive regards CTE clauses as a simple alias to the query block, which makes redundant
works if it's used multiple times in a query. This introduces a reference threshold for pre-materializing
the CTE clause as a volatile table (which is not exists in any form of metastore and just
accessible from QB).



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