title: AND \$CONDITIONS in sqoop import to be clarified, nothing imported, why?
body: <p>I am doing only <code>m=1</code>, meaning this is gonna to force the non-parallel importing, right?
  My table has 500000 lines and I only want to import a portion using a where condition in a free query, here is my command:</p>
  
  <pre><code>sqoop import --connect jdbc:mysql://localhost/employees --username root -P --query 'select emp_no, title from titles where "emp_no &lt; 10020 AND \$CONDITIONS"' --target-dir /title_set --m 1;
  </code></pre>
  
  <p>When I check the result, it is showing empty but does have a _SUCCESS file:
  <img src="https://i.stack.imgur.com/fVyGZ.jpg" alt="Directory listing with _SUCCESS file">
  What's wrong with my import script?</p>