Jan Thomä created FLINK-2975:
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Summary: Exclude logging dependencies from shaded Hadoop jar.
Key: FLINK-2975
URL: https://issues.apache.org/jira/browse/FLINK-2975
Project: Flink
Issue Type: Improvement
Affects Versions: 0.9.1
Reporter: Jan Thomä
The shaded hadoop jar has Log4j included. Therefore when you try to use flink
with logback/slf4j logging you will get warnings like:
```
log4j:WARN No appenders could be found for logger
(kafka.consumer.SimpleConsumer).
log4j:WARN Please initialize the log4j system properly.
```
even when you have the appropriate slf4j bridges in the classpath. I'd suggest
to exclude the Log4j dependency from the shaded Hadoop jar and then let the end
user decide on wether he wants to add log4j or a slf4j bridge to the classpath.
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