title: jemalloc shared library could not be preloaded to speed up memory allocations
body: <p>Using Cassandra 3.4 in Ubuntu 14.04. JDK 8.
  While Cassandra is starting I noticed the following warning in the warm-up:</p>
  
  <blockquote>
    <p>jemalloc shared library could not be preloaded to speed up memory
    allocations</p>
  </blockquote>
  
  <p>Any idea on how can I solve this?</p>