That’s great! How would I pull that with sbt? I currently use these 2 (mvnrepository.com/artifact/org.spark-project seems to be down atm): val spark="org.apache.spark" % "spark-core_2.10" % "0.9.0-incubating" val sparkStreaming= "org.apache.spark" % "spark-streaming_2.10" % "0.9.0-incubating"
Thanks! -A From: Sean Owen [mailto:so...@cloudera.com] Sent: March-14-14 4:33 PM To: user@spark.apache.org Cc: u...@spark.incubator.apache.org Subject: Re: slf4j and log4j loop Yes, I think you are interested in this issue and fix: https://github.com/apache/spark/pull/107 -- Sean Owen | Director, Data Science | London On Fri, Mar 14, 2014 at 1:04 PM, Adrian Mocanu <amoc...@verticalscope.com<mailto:amoc...@verticalscope.com>> wrote: Hi Have you encountered a slf4j and log4j loop when using Spark? I pull a few packages via sbt. Spark package uses slf4j-log4j12.jar and another package uses use log4j-over-slf4j.jar which creates the circular loop between the 2 loggers and thus the exception below. Do you know of a fix for this? SLF4J: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. SLF4J: See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details. An exception or error caused a run to abort. java.lang.ExceptionInInitializerError at org.apache.log4j.Logger.getLogger(Logger.java:40) 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) … … … … … … … … … … … … … … … … Caused by: java.lang.IllegalStateException: Detected both log4j-over-slf4j.jar AND slf4j-log4j12.jar on the class path, preempting StackOverflowError. See also http://www.slf4j.org/codes.html#log4jDelegationLoop for more details. at org.apache.log4j.Log4jLoggerFactory.<clinit>(Log4jLoggerFactory.java:51) ... 54 more Thanks -Adrian
