title: Flink CPU configuration
body: <p>Official Flink Documentation states that for each core in your cpu, you have to allocate 1 slot and increase the parallelism level by one simultaneously.</p>
  <p>One of my custom operators requires more than 1 CPU for computing (It is how it works in Heron). My system's cpu is 2.5. But Flink only uses 1 cpu. Do you know how can I config the Flink to use more CPU with only 1 slot?</p>