[ZEPPELIN-2660] Add credentials variable to spark interpreter

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Won't Fix
• Component/s: Interpreters
• Assignee: Unassigned
• Reporter: Jiayi Liao
• Created: 16/Jun/17 05:08
• Updated: 13/Jul/18 12:18
• Resolved: 13/Jul/18 12:18

Description

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(ZEPPELIN-828) and we can define a variable named 'credentials' before we interpret our codes in paragraph.

Issue Links

• links to: GitHub Pull Request #2417