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From Henry Saputra <henry.sapu...@gmail.com>
Subject Re: Change of logging infrastructure
Date Tue, 02 Sep 2014 18:57:34 GMT
+1 awesome!

For debug level we should start using slf4j  parameterized logging to
avoid toString concatenation.

- Henry

On Tue, Sep 2, 2014 at 11:29 AM, Till Rohrmann <trohrmann@apache.org> wrote:
> Hi guys,
>
> just a short remark about the new logging system we use henceforth in
> Flink. We replaced jcl interface with slf4j and the log4j logging framework
> with logback. The only things which change for you is the generation of the
> logger and the configuration.
>
> A logger with slf4j is created the following way:
>
> import org.slf4j.Logger;
> import org.slf4j.LoggerFactory;
>
> Logger LOG = LoggerFactory.getLogger(Foobar.class)
>
> In the context of this rework, we also disentangled Flink from the actually
> used logging framework. This means that we got rid off the LogUtils. A
> consequence of this change is that the logger is exclusively configured via
> the configuration file logback.xml. This file has to be placed in the
> classpath or given as an environment property
> -Dlogback.configurationFile=<file> to the JVM.
>
> Bests,
>
> Till

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