[slf4j-user] commons-logging Log4JLogger in slf4j

[Vitalii Diravka]

Hi all!

I working on updating hadoop libraries in Apache Drill project.
hadoop-hdfs uses commons-logging library, but Drill uses jcl-over-slf4j and
bans commons-logging.

I faced the following issue:
java.lang.NoClassDefFoundError: org/apache/commons/logging/impl/Log4JLogger
[1]
I even didn't find this class with the same path in any slf4j library.

Is that possible to solve the issue without enabling commons-logging in
Drill project? Looks like Log4JLogger class
in org.apache.commons.logging.impl of jcl-over-slf4j [2] could resolve it.
Should it be there? But then it will be the question to the dev list.

[1]
https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/common/MetricsLoggerTask.java#L152
[2]
https://github.com/qos-ch/slf4j/tree/master/jcl-over-slf4j/src/main/java/org/apache/commons/logging/impl

Thanks
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