Log4J 2 Support

[Ajay Kumar]

Hi Team,
We wanted to send Spark executor logs to a centralized logging server using
TCP Socket. I see that the spark log4j version is very old(1.2.17) and it
does not support JSON logs over tcp sockets on containers.
I wanted to konw what is the plan for upgrading the log4j version to log4j2.
Thanks in advance.
Regards,
Ajay