This is likely the issue you are looking for if you are looking to solve random SocketException "connection reset" issues.
SocketExceptions no longer trigger retries when processing distributed updates
Simultaneous multiple connections to Solr example often fail with various IOExceptions
ChaosMonkeyNothingIsSafeTest rare fails due to TOLEADER retries.
Move to non deprecated HttpClient impl classes to remove stale connection check on every request and move connection lifecycle management towards the client.
remove no longer used HttpShardHandlerFactory.USE_RETRIES