title: alluxio not distributing files across the cluster
body: <p>I'm using 6 node cluster for alluxio(1.4 version),but it does't distributing files across the cluster, one worker only  using 98% and other worker are using  50%-55%
  master node using 18% only 
  And i'm using "alluxio.user.file.write.location.policy.class=alluxio.client.file.policy.MostAvailableFirstPolicy" in alluxio-site.properties file in all nodes.</p>