HyukjinKwon opened a new pull request #3253: [ZEPPELIN-3551] Upgrade Scala to 2.11.12 URL: https://github.com/apache/zeppelin/pull/3253 ### What is this PR for? This is just to update scala to 2.11.12 which to be consistent with spark (SPARK-24418). This PR takes over and closes #3033 There was a minor conflict which my PR (https://github.com/apache/zeppelin/pull/3206) introduced. That change is compatible with both Scala 2.11.8 and 2.11.12 so we don't need to change it anymore. ### What type of PR is it? [Improvement] ### Todos * [x] - None ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-3551 ### How should this be tested? - CI pass ### Screenshots (if appropriate) ### Questions: * Does the licenses files need update? No * Is there breaking changes for older versions? No * Does this needs documentation? No
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