Because data is being moved around across shards during the resharding process, it is impossible to report the values of some of the metrics in an accurate manner. Therefore, several database metrics are not collected, and as a result, the graph is blank when you view the database or shard metrics.

Examples of metrics that are not collected during the resharding process are:

  • Used memory
  • Memory usage
  • Total keys
  • Write misses/sec
  • Read misses/sec
  • Expired objects/sec
  • Evicted objects/sec
  • Incoming traffic
  • Outgoing traffic