Steve Loughran commented on HADOOP-15267:

now that I've remembered to hit "submit patch", if yetus is happy it'll go in. 
After that, the best thing you can do is verify that it works for you

> S3A multipart upload fails when SSE-C encryption is enabled
> -----------------------------------------------------------
>                 Key: HADOOP-15267
>                 URL: https://issues.apache.org/jira/browse/HADOOP-15267
>             Project: Hadoop Common
>          Issue Type: Sub-task
>          Components: fs/s3
>    Affects Versions: 3.1.0
>         Environment: Hadoop 3.1 Snapshot
>            Reporter: Anis Elleuch
>            Assignee: Anis Elleuch
>            Priority: Critical
>         Attachments: HADOOP-15267-001.patch, HADOOP-15267-002.patch, 
> HADOOP-15267-003.patch
> When I enable SSE-C encryption in Hadoop 3.1 and set  fs.s3a.multipart.size 
> to 5 Mb, storing data in AWS doesn't work anymore. For example, running the 
> following code:
> {code}
> >>> df1 = spark.read.json('/home/user/people.json')
> >>> df1.write.mode("overwrite").json("s3a://testbucket/people.json")
> {code}
> shows the following exception:
> {code:java}
> com.amazonaws.services.s3.model.AmazonS3Exception: The multipart upload 
> initiate requested encryption. Subsequent part requests must include the 
> appropriate encryption parameters.
> {code}
> After some investigation, I discovered that hadoop-aws doesn't send SSE-C 
> headers in Put Object Part as stated in AWS specification: 
> [https://docs.aws.amazon.com/AmazonS3/latest/API/mpUploadUploadPart.html]
> {code:java}
> If you requested server-side encryption using a customer-provided encryption 
> key in your initiate multipart upload request, you must provide identical 
> encryption information in each part upload using the following headers.
> {code}
> You can find a patch attached to this issue for a better clarification of the 
> problem.

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