anchor.diff:  # client requests to a node with a separate queue for each
   # request_scheduler_id. The scheduler is further customized by
   # request_scheduler_options as described below.
  -request_scheduler: org.apache.cassandra.scheduler.NoScheduler
  +request_scheduler: <%= @request_scheduler %>
   
   # Scheduler Options vary based on the type of scheduler
   # NoScheduler - Has no options
  
positive.code: # expressed as a double which represents a percentage.  Thus, a value of
  # 0.2 means Cassandra would continue to prefer the static snitch values
  # until the pinned host was 20% worse than the fastest.
  dynamic_snitch_badness_threshold: 0.1
  
  # request_scheduler -- Set this to a class that implements
  # RequestScheduler, which will schedule incoming client requests
  
negative.code: 
  # controls how often to perform the more expensive part of host score
  # calculation
  dynamic_snitch_update_interval_in_ms: <%= @dynamic_snitch_update_interval_in_ms %> 
  # controls how often to reset all host scores, allowing a bad host to
  # possibly recover
  dynamic_snitch_reset_interval_in_ms: <%= @dynamic_snitch_reset_interval_in_ms %>
  # if set greater than zero and read_repair_chance is < 1.0, this will allow
  # 'pinning' of replicas to hosts in order to increase cache capacity.
  # The badness threshold will control how much worse the pinned host has to be
  