We are facing major performance issue after upgrade elasticsearch from 7.8 to 7.17 by rolling method.
Our Query hits elasticsearch using java rest api(7.2.1).
Perfomance degrade form 20ms to 300ms.
I need to to know is any major change in bakend at time of upgradtion related performance ,data ,etc.
Do we need to any parmater/configuration modification required after upgradation from 7.8 to 7.17 from