Siddharth Wagle reassigned HDDS-2131:

    Assignee: Siddharth Wagle

> Optimize replication type and creation time calculation in S3 MPU list call
> ---------------------------------------------------------------------------
>                 Key: HDDS-2131
>                 URL: https://issues.apache.org/jira/browse/HDDS-2131
>             Project: Hadoop Distributed Data Store
>          Issue Type: Improvement
>            Reporter: Elek, Marton
>            Assignee: Siddharth Wagle
>            Priority: Major
> Based on the review from [~bharatviswa]:
> {code}
> hadoop-ozone/ozone-manager/src/main/java/org/apache/hadoop/ozone/om/KeyManagerImpl.java
>                   metadataManager.getOpenKeyTable();
>               OmKeyInfo omKeyInfo =
>                   openKeyTable.get(upload.getDbKey());
> {code}
> {quote}Here we are reading openKeyTable only for getting creation time. If we 
> can have this information in omMultipartKeyInfo, we could avoid DB calls for 
> openKeyTable.
> To do this, We can set creationTime in OmMultipartKeyInfo during 
> initiateMultipartUpload . In this way, we can get all the required 
> information from the MultipartKeyInfo table.
> And also StorageClass is missing from the returned OmMultipartUpload, as 
> listMultipartUploads shows StorageClass information. For this, if we can 
> return replicationType and depending on this value, we can set StorageClass 
> in the listMultipartUploads Response.
> {quote}

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