zjffdu opened a new pull request #3697: [ZEPPELIN-4673]. Add option to only allow yarn-cluster mode for spark interpreter URL: https://github.com/apache/zeppelin/pull/3697 ### What is this PR for? Yarn client mode and local mode will run driver in the same machine with zeppelin server, this would be dangerous for production. Because it may run out of memory when there's many spark interpreters running at the same time. So in this PR, I introduce one configuration `zeppelin.spark.only_yarn_cluster`, by default it is turned off. When it is turned on, only yarn-cluster mode can be used. ### What type of PR is it? [ Improvement ] ### Todos * [ ] - Task ### What is the Jira issue? * https://issues.apache.org/jira/browse/ZEPPELIN-4673 ### How should this be tested? * Manually tested ### 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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