In the hue interface, oozie is used to submit and execute the spark2 workflow. The error is as follows:    Error: Cannot load main class from JAR file:/yarn/nm/usercache/hue/appcache/application_1541554513940_0002/container_1541554513940_0002_01_000001/com.hundsun.spark.ProgramEntry Run with --help for usage help or --verbose for debug output  Ask for help. Thanks ... View more