Tianyi Wang created IMPALA-6820:

             Summary: Remove builtins db from catalogd
                 Key: IMPALA-6820
                 URL: https://issues.apache.org/jira/browse/IMPALA-6820
             Project: IMPALA
          Issue Type: Improvement
    Affects Versions: Impala 2.13.0
            Reporter: Tianyi Wang
            Assignee: Tianyi Wang

Currently builtins_db is created in the catalogd initialization. But later on 
when catalogd calls reset(), catalogd will replace its dbCache with DBs from 
HMS. As a result, a delete builtins_db operation is always in the initial 
catalog update sent to statestore. Though statestore doesn't send it to impalad 
because the initial catalog is not a delta and doesn't include delete 
operations, it's a potential problem. We should remove builtins db from 
catalogd because it's not needed there. 

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