title: How to append files in GCS with the same schema?
body: <p>Is there any way one can append two files in GCS, suppose file one is a full 
    load and second file is an incremental load. Then what's the way we can append 
    the two?<br>
    Secondly, using gsutil compose will append the two files including the attributes 
    names as well. So, in the final file I want the data of the two files.</p>