Make hibernate generate_statistics configurable and false by default

I don't entirely see any indication it's on or not. A developer could test changing the setting and setting the log value to see the information that is generated. If you set hibernate.generate_statistics= true log.config.count = 2 log.config.1 = INFO.org.hibernate.engine.internal.StatisticalLoggingSessionEventListener log.config.2 = DEBUG.org.hibernate.SQL if you do this you'll see something like 02-Jan-2021 14:05:12.886 INFO [Timer-1] org.hibernate.engine.internal.StatisticalLoggingSessionEventListener.end Session Metrics { 9300 nanoseconds spent acquiring 1 JDBC connections; 0 nanoseconds spent releasing 0 JDBC connections; 28683100 nanoseconds spent preparing 1132 JDBC statements; 1069874300 nanoseconds spent executing 1132 JDBC statements; 0 nanoseconds spent executing 0 JDBC batches; 978613700 nanoseconds spent performing 1132 L2C puts; 0 nanoseconds spent performing 0 L2C hits; 0 nanoseconds spent performing 0 L2C misses; 798500 nanoseconds spent executing 1 flushes (flushing a total of 1132 entities and 0 collections); 567990900 nanoseconds spent executing 1132 partial-flushes (flushing a total of 640146 entities and 640146 collections) If hibernate.generate_statistics=false (new default) the log just won't show any messages if you have it enabled.