Cannot run multiple SparkContexts at once; existing SparkContext(app=test, master=local) created by __init__ at C:\Users\86189\AppData\Local\Temp\ipykernel_3360\7906355.py:5
时间: 2023-08-28 22:19:24 浏览: 40
这个错误的意思是你正在尝试创建一个新的 SparkContext,但是已经存在一个 SparkContext。每个 Spark 应用程序只能有一个 SparkContext 实例。你需要停止已经存在的 SparkContext,或者在创建新的 SparkContext 之前,使用 `SparkConf().setAppName("your_app_name").setMaster("local[*]")` 来设置应用程序的名称和运行模式。另外,确保在每个应用程序中只有一个 SparkContext 实例是一个好的编程实践。
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