Describe the enhancement requested

#38269 implements Azure file reads including fetching file metadata. The implementation in that PR chose to just return the user defined metadata on the blob as it was in #12914.

However this is not quite right. I think really we want to return the information in the BlobPropeties which contains more system level information like last modified time, etc. Looking at the GCS filessytem it contains information fairly similar to what is in BlobPropeties

Probably this will require a big function to map all the fields of BlobPropeties to KeyValueMetadata and a corresponding update to the OpenInputStreamReadMetadata test. I thought it would be best to do this in a separate PR in the interest of keeping PRs small and easily re-viewable.

Related Issues:

• [C++] Implement file reads for Azure filesystem #37511 (is caused by)
• [C++] Filesystem implementation for Azure Blob Storage #18014 (is a child of)

Component(s)

C++