hadoop的namenode和datanode服务没有在单线程模式下运行

sq1bmfud 于 2021-06-02 发布在 Hadoop

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我在ubuntu 16.04上以单模式安装了Hadoop2.7.2。但是在启动hadoop之后，namenode和datanode服务都不会运行。

hduser@saber-Studio-1435:/usr/local/hadoop$ start-all.sh
This script is Deprecated. 
Instead use start-dfs.sh and start-yarn.sh
16/06/20 15:34:56 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
Starting namenodes on [localhost]
localhost: starting namenode, logging to /usr/local/hadoop/logs/hadoop-hduser-namenode-saber-Studio-1435.out
localhost: starting datanode, logging to /usr/local/hadoop/logs/hadoop-hduser-datanode-saber-Studio-1435.out
Starting secondary namenodes [0.0.0.0]
0.0.0.0: secondarynamenode running as process 7214. Stop it first.
16/06/20 15:35:13 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
starting yarn daemons
resourcemanager running as process 7374. Stop it first.
localhost: nodemanager running as process 7502. Stop it first.

状态：

hduser@saber-Studio-1435:/usr/local/hadoop$ jps
8747 Jps
7502 NodeManager
7374 ResourceManager
7214 SecondaryNameNode

hadoop namenode

来源：https://stackoverflow.com/questions/37923266/hadoops-namenode-and-datanode-service-did-not-run-in-single-mode

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按热度按时间

fruv7luv1#

First stop the hadoop $HADOOP_HOME ./sbin/stop-all.sh
Then format the hadoop ecosytem
./bin/hadoop namenode -format
./bin/hadoop datanode -format
./bin/hdfs namenode -format
./bin/hdfs datanode -format
Then start agian using ./sbin/start-all.sh
Then try jps on cli and if still does'nt works then remove the directory created for hdfs and recreate it using mkdir -p

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hadoop的namenode和datanode服务没有在单线程模式下运行

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