David Turner cc3364e4f8 Stats to record how often the ClusterState diff mechanism is used successfully (#26973)
It's believed that using diffs obsoletes the other mechanism for reusing the
bits of the ClusterState that didn't change between updates, but in fact we
don't know for sure how often the diff mechanism works successfully. The stats
collected here will tell us.
2017-10-25 07:35:25 +01:00
..
2017-08-31 09:54:35 -04:00