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Posted to issues@impala.apache.org by "Dimitris Tsirogiannis (JIRA)" <ji...@apache.org> on 2017/04/28 05:58:04 UTC

[jira] [Created] (IMPALA-5259) Add REFRESH FUNCTIONS statement

Dimitris Tsirogiannis created IMPALA-5259:
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             Summary: Add REFRESH FUNCTIONS <db> statement
                 Key: IMPALA-5259
                 URL: https://issues.apache.org/jira/browse/IMPALA-5259
             Project: IMPALA
          Issue Type: New Feature
          Components: Catalog
            Reporter: Dimitris Tsirogiannis
            Assignee: Taras Bobrovytsky


Currently, Impala relies on INVALIDATE METADATA to load externally added UDFs from HMS. However, INVALIDATE METADATA affects all the databases/tables of an Impala cluster. Instead, we should add a REFRESH FUNCTIONS <db> statement to reload the functions of a database from HMS. This statement should return the list of db functions to the issuing Impalad in order to update its local catalog cache.



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