anchor.diff:  (integer)
   Total number of index warmers.
   
  +`indices.warmer.total_time`::
  +(<<time-units,time value>>)
  +Total time spent performing index warming operations.
  +
   `indices.warmer.total_time_in_millis`::
   (integer)
   Total time in milliseconds
   spent performing index warming operations.
   
  +`indices.query_cache.memory_size`::
  +(<<byte-units,byte value>>)
  +Total amount of memory used for the query cache across all shards assigned to
  +the node.
  +
   `indices.query_cache.memory_size_in_bytes`::
   (integer)
  -Memory, in bytes, used for query cache.
  +Total amount of memory, in bytes, used for the query cache across all shards
  +assigned to the node.
   
   `indices.query_cache.total_count`::
   (integer)
  
positive.code: (integer)
  Total number of external refresh operations.
  
  `indices.refresh.external_total_time_in_millis`::
  (integer)
  Total time in milliseconds
  
negative.code: (integer)
  Number of transaction log operations.
  
  `indices.translog.size`::
  (<<byte-units,byte value>>)
  Size of the transaction log.
  
  `indices.translog.size_in_bytes`::
  (integer)
  Size, in bytes, of the transaction log.
  