fix(uploads): ignore EOF when sending finish write message (#1931)

Signed-off-by: Jose I. Paris <[email protected]>

Author: jiparis

pkg/casclient/uploader.go

@@ -103,6 +103,10 @@ doUpload:
 				ResourceName: resource,
 				FinishWrite:  true,
 			}); err != nil {
+				// EOF might be returned when the CAS backend detects a duplicated upload, skipping it in that case
+				if errors.Is(err, io.EOF) {
+					break doUpload
+				}
 				return nil, fmt.Errorf("sending the finished upload message %w", err)
 			}
 			break