您好我正在尝试执行spark，但是当我在aws群集上运行时，我遇到了以下问题。
log4j:ERROR Could not read configuration file from URL [file:/etc/spark/conf/log4j.properties].
java.io.FileNotFoundException: /etc/spark/conf/log4j.properties (No such file or directory)
at java.io.FileInputStream.open(Native Method)
和
17/09/28 19:50:16 INFO ApplicationMaster: Final app status: FAILED, exitCode: 15, (reason: User class threw exception: org.apache.spark.SparkException: Job aborted due to stage failure: Task 0 in stage 0.0 failed 1 times, most recent failure: Lost task 0.0 in stage 0.0 (TID 0, localhost): com.amazonaws.services.s3.model.AmazonS3Exception: Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: 9AA4363BB8D75166), S3 Extended Request ID: UzSFXBXoJgTar68arZIr6X68gKuIVLOmUub/u5gwnZ9QYC+QpqKZhr7M848mj0OdijyKXGYTJ3I=
at com.amazonaws.http.AmazonHttpClient.handleErrorResponse(AmazonHttpClient.java:1286)