title: Append rows to azure data lake gen 1 file
body: <p>I have loaded data from Oracle to Azure data lake gen 1 in <code>.txt</code> format using <code>copy activity</code>. This is a Full load.</p>
  <p>Now, I want to do incremental/delta load. How can I add new rows to same sink file?</p>
  <p><strong>Issue:</strong>
  The data get replaced when I give the same name which is present in SINK side.</p>
  <p><strong>Expected:</strong>
  Instead I want to append this new rows to the file.</p>
  <p>Can some one please suggest/guide the process to achieve this?</p>