[BUG] copyFromUrlWithResponse fails with 404 CannotVerifyCopySource if blob name contains %20

Scanario

• Copying Container of Blobstore A to Container of Blobstore B.
• A Blob exists with the name my%20testfile.txt. You see this name in the AzurePortal (Its not the URL Encoded name)

Application functionality:

1. Get list of all Blobs from Blobstore A
2. Create a BlockBlobClient with the name from the source blob (containerClient.getBlobClient(name)
3. Add a SASToken to the BlobURL
4. Trigger server side copy process to create Blob in Blobstore B with URL from source blob

Example:

1. Get blob with name my%20testfile.txt
2. Create BlockBlobClient:
   URL is e.g. https://xyz.blob.core.windows.net/container/my testfile.txt (URL Encoding)
3. Add SAS Token
4. Trigger server side copy: -> 404, because it tries to copy the file my testfile.txt

Error Exception: com.azure.storage.blob.models.BlobStorageException: Status code 404 Errorcode: CannotVerifyCopySource Message: The specified blob does not exist.

Reproduce

• Create a blob with %20 in its name.
• Create a BlockBlobClient with this name
• Optional: Add a SAS Token if not public readable
• Trigger Copy Process with: targeBlockBlobClient.copyFromUrlWithResponse(...)

Expected behavior Successful copy of the file

Workaround … for now is to replace the character % with %20.

1. my%20testfile.txt to my%2020testfile.txt
2. URL of BlockBlobClient: https://xyz.blob.core.windows.net/container/my%20testfile.txt
3. Copy successful

[rickle-msft]

@daolis Thank you for reporting this.

@alzimmermsft I suspsect you are right about the connection. @gapra-msft Can you be sure to test this case for blobs while you’re working on files?

[rickle-msft]

I am going to close this issue as we have given a recommendation on how to appropriately resolve the problem and there has been no follow up.

Please feel free to reach back out to us if you need further support.