Hadoop CDH4錯誤：SLF4J：無法加載類“ org.slf4j.impl.StaticLoggerBinder”

Question

我正在使用Ubuntu 14.04。 CDH4.7我正在按照http://www.cloudera.com/content/cloudera-content/cloudera-docs/CDH4/latest/CDH4-Quick-Start/cdh4qs_topic_3_2.html下面鏈接中給出的過程進行安裝我無法啟動數據節點。 我收到錯誤信息

naveensrikanthd@ubuntu:/$ for x in `cd /etc/init.d ; ls hadoop-hdfs-*` ; do sudo service $x start ; done
[sudo] password for naveensrikanthd: 
 * Starting Hadoop datanode: 
starting datanode, logging to /var/log/hadoop-hdfs/hadoop-hdfs-datanode-ubuntu.out
SLF4J: Failed to load class "org.slf4j.impl.StaticLoggerBinder".
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details.
 * Starting Hadoop namenode: 
namenode running as process 15437. Stop it first.
 * Starting Hadoop secondarynamenode: 
secondarynamenode running as process 3061. Stop it first.
naveensrikanthd@ubuntu:/$ jps
7467 RunJar
8048 RunJar
18363 Jps

沒有Hadoop進程正在運行，並且上面給出的以下三個語句[slf4J]在namenode和datanode之間混排：

以下是路徑的日志文件：/var/log/hadoop-hdfs/hadoop-hdfs-datanode-ubuntu.out SLF4J：無法加載類“ org.slf4j.impl.StaticLoggerBinder”。 SLF4J：用戶hdfs缺省為無操作（NOP）記錄器實現ulimit -a

我該怎么辦才能消除此錯誤？有人請幫助解決此錯誤

Answer 1

輸出顯示實際上namenode已經在運行。 您應該仔細檢查您認為它們應該在哪里運行以及您的配置說了什么，因為這表明您已經成功了。

log4j的錯誤與Hadoop功能無關。