錯誤如下：
因為我配置spark的歷史紀錄文件夾的路徑在hdfs上面，spark需要訪問hdfs，所以編輯spark-defaults.conf文件的時候，spark.eventLog.dir的值的主機名端口號要和你hadoop中配置文件core-site中fs.defaultFS的值一致，並且文件夾要已經存在。
比如我的如上所示，我把spark.eventLog.dir改為hdfs://hadoop102:9000/directory就行了
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