[GitHub] [hadoop] elek opened a new pull request #1278: HDDS-1950. S3 MPU part-list call fails if there are no parts

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

elek opened a new pull request #1278: HDDS-1950. S3 MPU part-list call fails if there are no parts
URL: https://github.com/apache/hadoop/pull/1278
 
 
   If an S3 multipart upload is created but no part is upload the part list can't be called because it throws HTTP 500:
   
   Create an MPU:
   
   {code}
   aws s3api --endpoint http://localhost:9999 create-multipart-upload --bucket=docker --key=testkeu                                         
   {
       "Bucket": "docker",
       "Key": "testkeu",
       "UploadId": "85343e71-4c16-4a75-bb55-01f56a9339b2-102592678478217234"
   }
   {code}
   
   List the parts:
   
   {code}
   aws s3api --endpoint http://localhost:9999 list-parts  --bucket=docker --key=testkeu --upload-id=85343e71-4c16-4a75-bb55-01f56a9339b2-102592678478217234
   {code}
   
   It throws an exception on the server side, because in the KeyManagerImpl.listParts the  ReplicationType is retrieved from the first part:
   
   {code}
           HddsProtos.ReplicationType replicationType =
               partKeyInfoMap.firstEntry().getValue().getPartKeyInfo().getType();
   {code}
   
   Which is not yet available in this use case.
   
   See: https://issues.apache.org/jira/browse/HDDS-1950

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