How to suppress INFO messages for spark-sql running on EMR?

Question

I\'m running Spark on EMR as described in Run Spark and Spark SQL on Amazon Elastic MapReduce:

This tutorial walks you through installing and operating Sp

Answer 1

spark-sql --driver-java-options "-Dlog4j.configuration=file:///home/hadoop/conf/log4j.properties"

cat conf/log4j.properties

# Set everything to be logged to the console
log4j.rootCategory=WARN, console
log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.target=System.err
log4j.appender.console.layout=org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=%d{yy/MM/dd HH:mm:ss} %p %c{1}: %m%n

# Settings to quiet third party logs that are too verbose
log4j.logger.org.eclipse.jetty=WARN
log4j.logger.org.eclipse.jetty.util.component.AbstractLifeCycle=ERROR
log4j.logger.org.apache.spark.repl.SparkIMain$exprTyper=WARN
log4j.logger.org.apache.spark.repl.SparkILoop$SparkILoopInterpreter=WARN