Why does my Amazon EMR application fail with an HTTP 404 "Not Found" AmazonS3Exception?
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When I run an application on Amazon EMR, the application fails with the HTTP 404 "Not Found" AmazonS3Exception.
Resolution
You might get this error when your application tries to access an Amazon S3 file or path that doesn't exist.
Confirm the Amazon S3 path
Before you launch your application, confirm that you entered the correct Amazon S3 path. Also, confirm that the path exists. For more information, see Input and output errors.
Resolve application or account conflicts
Before you launch your application, check whether other applications or accounts are actively accessing the same Amazon S3 path. For more information about tools that you can use to monitor your Amazon S3 account, see Monitoring tools.