keineahnung2345 opened a new pull request #3282: [ZEPPELIN-3944] Update Dockerfiles of spark_standalone and spark_yarn_cluster URL: https://github.com/apache/zeppelin/pull/3282 ### What is this PR for? Upgrade the Dockerfiles of spark_standalone and spark_yarn_cluster to CentOS7 and Spark 2.4.0. Java remains in version 7 since hadoop 2.x depends on Java7. ### What type of PR is it? Improvement ### What is the Jira issue? * [ZEPPELIN-3944](https://issues.apache.org/jira/browse/ZEPPELIN-3944) ### How should this be tested? * Follow the instructions here: [spark-standalone](https://zeppelin.apache.org/docs/0.8.0/setup/deployment/spark_cluster_mode.html#spark-standalone-mode) and [spark-yarn-cluster](https://zeppelin.apache.org/docs/0.8.0/setup/deployment/spark_cluster_mode.html#spark-on-yarn-mode) ### 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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