log4j的配置

可以控制控制台的 输出类型

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# 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.spark-project.jetty=WARN
#log4j.logger.org.spark-project.jetty.util.component.AbstractLifeCycle=ERROR
#log4j.logger.org.apache.spark.repl.SparkIMain$exprTyper=INFO
#log4j.logger.org.apache.spark.repl.SparkILoop$SparkILoopInterpreter=INFO
#log4j.logger.org.apache.parquet=ERROR
#log4j.logger.parquet=ERROR
#
## SPARK-9183: Settings to avoid annoying messages when looking up nonexistent UDFs in SparkSQL with Hive support
#log4j.logger.org.apache.hadoop.hive.metastore.RetryingHMSHandler=FATAL
#log4j.logger.org.apache.hadoop.hive.ql.exec.FunctionRegistry=ERROR