我是一个火花菜鸟，并使用Windows 10尝试使火花起作用。我已经正确设置了环境变量，并且我也有winutils。当我进入spark/bin并输入时spark-shell，它会运行spark，但是会出现以下错误。
而且它不显示spark上下文或spark会话。我一步一步地跟随了这个视频。
C:\Users\Akshay\Downloads\spark\bin>spark-shell
17/06/19 23:45:12 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
17/06/19 23:45:19 WARN General: Plugin (Bundle) "org.datanucleus.api.jdo" is already registered. Ensure you dont have multiple JAR versions of the same plugin in the classpath. The URL "file:/C:/Users/Akshay/Downloads/spark/bin/../jars/datanucleus-api-jdo-3.2.6.jar" is already registered, and you are trying to register an identical plugin located at URL "file:/C:/Users/Akshay/Downloads/spark/jars/datanucleus-api-jdo-3.2.6.jar."
17/06/19 23:45:20 WARN General: Plugin (Bundle) "org.datanucleus" is already registered. …