The last parameter %D in my example should output "Time taken to process the request, in millis". server.xml configuration in a Host element: <Valve className="org.apache.catalina.valves.AccessLogValve" prefix="access-" suffix=".log" pattern="%h %l %u %t '%r' %s %b %D" /> Log output for HTTP/2 requests: 85.x.y.z - - [22/Dec/2016:09:51:49 +0100] 'GET / HTTP/2.0' 200 1165 1482396709364 Using connector org.apache.coyote.http11.Http11AprProtocol with upgrade protocol org.apache.coyote.http2.Http2Protocol The value seems to be the UNIX timestamp instead for HTTP/2.0. HTTP/1.1 requests works as expected.
Fixed for 9M16 and 8.5.10.