[GitHub] [hadoop] mehakmeet edited a comment on pull request #2706: HADOOP-13887. Support S3 client side encryption (S3-CSE) using AWS-SDK

[GitBox <gi...@apache.org>]

mehakmeet edited a comment on pull request #2706:
URL: https://github.com/apache/hadoop/pull/2706#issuecomment-783802582


   Also on that note, I figured something in the aws-sdk while doing a put request we have this in S3CryptoModuleBase.java:
   ```
   // Record the original, unencrypted content-length so it can be accessed
           // later
           final long plaintextLength = plaintextLength(request, metadata);
           if (plaintextLength >= 0) {
               metadata.addUserMetadata(Headers.UNENCRYPTED_CONTENT_LENGTH,
                                        Long.toString(plaintextLength));
               // Put the ciphertext length in the metadata
               metadata.setContentLength(ciphertextLength(plaintextLength));
           }
           request.setMetadata(metadata);
   ```
   Every put request in AmazonS3EncryptionClientV2, is wrapped like this. but it seems this isn’t the issue, in LIST ops, we don’t use these, right? so, how do we get file length in LIST calls?


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