Disable spymemcached logging in version 2.12

Question

We recently made a version change of spymemcached library.
Specifically from version 2.9.1 to 2.12.1.

It seems that change has produced a log message each second, like the following:

2017-04-11 17:20:13,668 Memcached IO over {MemcachedConnection to localhost/127.0.0.1:11211} DEBUG [n.s.m.p.a.AsciiMemcachedNodeImpl:72] log | Selecting with delay of 1000ms
2017-04-11 17:20:14,668 Memcached IO over {MemcachedConnection to localhost/127.0.0.1:11211} DEBUG [n.s.m.p.a.AsciiMemcachedNodeImpl:72] log | Done dealing with queue.
2017-04-11 17:20:14,668 Memcached IO over {MemcachedConnection to localhost/127.0.0.1:11211} DEBUG [n.s.m.p.a.AsciiMemcachedNodeImpl:72] log | Selecting with delay of 1000ms
2017-04-11 17:20:15,669 Memcached IO over {MemcachedConnection to localhost/127.0.0.1:11211} DEBUG [n.s.m.p.a.AsciiMemcachedNodeImpl:72] log | Done dealing with queue.

What I see in the code of AsciiMemcachedNodeImpl class is:

71    getLogger().debug("Set up %s with %s keys and %s callbacks", this,
72        pcb.numKeys(), pcb.numCallbacks());

I guess there should be a way to configure spymemcached logging.
Either it is at runtime on through code.
Does anyone know how to get rid of those logs?

NOTE: This question has an answer, though according to its date, it seems for versions <= 2.9.1, since net.spy.log package and LoggerImpl class do not exist anymore. I also cannot find any setLevel function in the whole spymemcached source code.

Answer 1

Well, I finally fixed this adding this line:

<logger name="net.spy.memcached.protocol.ascii" level="info"/>

to logback.xml process file.