一、问题描述 当我多次格式化文件系统时,如 [root@master]# cd /usr/local/hadoop/etc/bin/hdfs namenode -format 会出现datanode无法启动,查看日志(/usr/local/hadoop/logs/hadoop-hadoop-datanode-xsh.log),发现错误为: 2018-05-15 21:22:14,616 FATAL org.apache.hadoop.hdfs.server.datanode.DataNode: In...
经过搜索,https://community.hortonworks.com/questions/69227/data-node-not-starting-and-not-showing-any-error-l.html 通过以下两行命令 export HADOOP_ROOT_LOGGER=DEBUG,console hdfs datanode 手动启动datanode来进行debug,直到发现错误信息:java.lang.IllegalArgumentException: Does not contain a valid host:port...
logging to/home/hadoop/app/hadoop-2.6.0-cdh5.15.1/logs/hadoop-hadoop-datanode-hadoop001.outStartingsecondary namenodes[0.0.0.0]0.0.0.0:secondarynamenode runningasprocess5880.Stopit first.[hadoop@hadoop001 sbin]$ jps2770ResourceManager2883
执行./stop-dfs.sh后,关闭hdfs,重新启动,结果跟上面一样,仍然是DataNode 没有启动。 再三折腾,删除掉存放数据的临时文件tmp,重新格式化Hadoop,格式化成功。 Hadoop格式化结果 查看日志,发现有个明显的报错日志: ssh: Could not resolve hostname localhost: nodename nor servname provided, or not known 看来跟本...
[root@hadoopcurrent]#hadoop-daemon.sh start datanodestarting datanode, logging to /usr/local/hadoop1.1/libexec/../logs/hadoop-root-datanode-hadoop.out [root@hadoop ~]#jps jps命令发现没有datanode启动,所以去它提示的路径下查看了hadoop-root-datanode-hadoop.out文件,可以是空白的。
CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.Starting nodemanagers WARNING: YARN_CONF_DIR has been replaced by HADOOP_CONF_DIR. Using value of YARN_CONF_DIR.[cndba@hadoopmaster hadoop]$ hadoop-env.sh ⽂件中敲成了cbdba：export HDFS_DATANODE_USER="cbdba"
localhost: starting datanode, logging to /home/xixitie/hadoop/bin/../logs/hadoop-root-datanode-aist.out localhost: Error: JAVA_HOME is not set. localhost: starting secondarynamenode, logging to /home/xixitie/hadoop/bin/../logs/hadoop-root-secondarynamenode-aist.out ...
动态添加datanode节点,主机名node14.cn shell>hadoop-daemon.sh start datanode shell>jps #查看datanode进程是否已启动 发现DataNode进程启动后立即消失,查询日志发现一下记录: 2018-04-15 00:08:43,158 INFO org.apache.hadoop.hdfs.server.namenode.NameNode: registered UNIX signal handlers for [TERM, HUP, ...
Hadoop Cluster启动后数据节点(DataNode)进程状态丢失 在拥有三个节点的Hadoop集群环境中,其各节点的配置为:CPU Intel(R) Core(TM) i3-3120M CPU@2.50GHz 2.50GHz,内存RAM 6GB,Operation System Redhat Linux 5 x86-64bit. 首先通过命令hadoop dfs namenode -format格式化名称节点,格式化成功以后使用start-dfs.sh...
Hadoop Cluster启动后数据节点(DataNode)进程状态丢失 在拥有三个节点的Hadoop集群环境中,其各节点的配置为:CPU Intel(R) Core(TM) i3-3120M CPU@2.50GHz 2.50GHz,内存RAM 6GB,Operation System Redhat Linux 5 x86-64bit. 首先通过命令hadoop dfs namenode -format格式化名称节点,格式化成功以后使用start-dfs.sh...