 </span>
      
      <p class="shortcomment cmt">This function copies files between tables without overwriting target folder itself.</p><div class="fullcomment"><div class="comment cmt"><p>This function copies files between tables without overwriting target folder itself. It allows to keep proper default ACLs on files in the target.
Execution is distributed to entire cluster so performance will depend on number of cores and VMs network throughput.
</p></div><dl class="paramcmts block"><dt class="param">sou