Peter Rozsa created IMPALA-14287:
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             Summary: Support environment variables in MetaProvider 
configurations
                 Key: IMPALA-14287
                 URL: https://issues.apache.org/jira/browse/IMPALA-14287
             Project: IMPALA
          Issue Type: Improvement
          Components: Frontend
            Reporter: Peter Rozsa
            Assignee: Peter Rozsa


MetaProvider configuration .properties files should support environment 
variables, for example: 

connection-password=${ENV:DB_PASSWORD}

where DB_PASSWORD should be read as an environment variable.

This helps secret management in configurations.



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