Hey guys,
I've asked before, in Spark 0.9 - I now use 0.9.1, about removing log4j 
dependency and was told that it was gone. However I still find it part of 
zookeeper imports. This is fine since I exclude it myself in the sbt file, but 
another issue arises.
I wonder if anyone else has run into this.

Spark uses log4j v1.2.17 and slf4j-log4j12:1.7.2
I use slf4j 1.7.5, logback 1.0.13, and log4joverslf4j v 1.7.5

I think my slf4j 1.7.5 doesn't agree with what zookeeper expects in its log4j v 
1.2.17 because I get missing method error:
java.lang.NoSuchMethodError: 
org.apache.log4j.Logger.setLevel(Lorg/apache/log4j/Level;)V
                at 
org.apache.spark.util.AkkaUtils$$anonfun$createActorSystem$1.apply(AkkaUtils.scala:58)
                at 
org.apache.spark.util.AkkaUtils$$anonfun$createActorSystem$1.apply(AkkaUtils.scala:58)
                at scala.Option.map(Option.scala:145)
                at 
org.apache.spark.util.AkkaUtils$.createActorSystem(AkkaUtils.scala:58)
                at org.apache.spark.SparkEnv$.create(SparkEnv.scala:126)
                at org.apache.spark.SparkContext.<init>(SparkContext.scala:139)
                at 
org.apache.spark.streaming.StreamingContext$.createNewSparkContext(StreamingContext.scala:500)
                at 
org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:76)
...

Is there a way to find out what versions of slf4j I need to make it work with 
log4j 1.2.17?

-Adrian

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