[jira] [Created] (ZEPPELIN-2660) Add credentials variable to spark interpreter

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[jira] [Created] (ZEPPELIN-2660) Add credentials variable to spark interpreter

JIRA jira@apache.org
Wind created ZEPPELIN-2660:
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             Summary: Add credentials variable to spark interpreter
                 Key: ZEPPELIN-2660
                 URL: https://issues.apache.org/jira/browse/ZEPPELIN-2660
             Project: Zeppelin
          Issue Type: Improvement
          Components: Interpreters
            Reporter: Wind


*Problem:*
If we want to access databases in a spark interpreter, we need to specify our own private username and password in a spark interpreter paragraph, which is not always safe due to visible authentifier information.
*Fix:*
We already have 'credentials' to store our private username and password and we can define a variable named 'credentials' before we interpret our codes in paragraph.



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