https://bugs.mojang.com/browse/MC-100524
Log files were previously overwritten when more than 7 were created on the same day. This is caused by Log4J's default behavior with DefaultRolloverStrategy, which defaults to a max of 7.
While a max of 1000 doesn't fully stop this problem from happening, for 1000 log files in a single day to be reached the server would have to restart faster than once every 1.5 minutes, which is unlikely to happen. So 1000 seems like a good limit. A higher max isn't used because when it gets higher, there are performance hits due to the way Log4J checks for the next file.
By: Pokechu22 <Pokechu022@gmail.com>
Something the log4j ConsoleAppender does makes the console work correctly
on Windows. After trying to pull pieces of it out and run them manually
I decided to just put the appender back. We now once again start with the
ConsoleAppender then remove it immediately after starting.
By: Travis Watkins <amaranth@ubuntu.com>
