I was writing up some notes about a client's status variables, and I'd had to remind myself of Handler_read_first. Handler_read_first is a counter that increments when the first entry in the index is read, which may indicate that a full index scan is being used. With this particular client, I ran a SHOW STATUS, waited 100 seconds, and ran it again. Handler_read_first jumped by about 53. So I wrote down in my notes:first in the index...every other second. Lots of table scans?As s