Github user adityakishore commented on the pull request:
https://github.com/apache/drill/pull/443#issuecomment-200580166
`jcl-over-slf4j` works as long as the application use only the surface
logging APIs.
Unfortunately, HBase uses some [internal
classes](https://github.com/apache/hbase/blob/branch-1.3/hbase-server/src/main/java/org/apache/hadoop/hbase/http/HttpRequestLog.java)
from the `commons-logging` library which are not available in `jcl-over-slf4j`.
I have verified that the dependency does not traverse to other module and
certainly does not get bundled with the binary tarball.
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