public EventHubsSystemDescriptor withNumClientThreads(int numClientThreads) {
    this.numClientThreads = Optional.of(numClientThreads);
    return this;
  }
Number of threads in thread pool that will be used by the EventHubClient.

@param numClientThreads the number of threads
@return this system descriptor
samza-azure/src/main/java/org/apache/samza/system/eventhub/descriptors/EventHubsSystemDescriptor.java