Question

我在Ubuntu 13上将Hadoop YARN（2.5.1）设置为单节点集群。当我运行start-dfs.sh时，它会提供以下输出，并且进程无法启动（我确认使用了jps和ps命令）。我的bashrc设置也在下面复制。关于我需要重新配置的任何想法？

bashrc添加：

export JAVA_HOME=/usr/lib/jvm/java-8-oracle
export HADOOP_INSTALL=/opt/hadoop/hadoop-2.5.1
export PATH=$PATH:$HADOOP_INSTALL/bin
export PATH=$PATH:$HADOOP_INSTALL/sbin
export HADOOP_MAPRED_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_HOME=$HADOOP_INSTALL
export HADOOP_HDFS_HOME=$HADOOP_INSTALL
export YARN_HOME=$HADOOP_INSTALL
export HADOOP_COMMON_LIB_NATIVE_DIR=$HADOOP_INSTALL/lib/native
export HADOOP_OPTS="-Djava.library.path=$HADOOP_INSTALL/lib"

start-dfs.sh输出：

14/09/22 12:24:13 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 /opt/hadoop/hadoop-2.5.1/logs/hadoop-hduser-namenode-zkserver1.fidelus.com.out
localhost: nice: $HADOOP_INSTALL/bin/hdfs: No such file or directory
localhost: starting datanode, logging to /opt/hadoop/hadoop-2.5.1/logs/hadoop-hduser-datanode-zkserver1.fidelus.com.out
localhost: nice: $HADOOP_INSTALL/bin/hdfs: No such file or directory
Starting secondary namenodes [0.0.0.0]
The authenticity of host '0.0.0.0 (0.0.0.0)' can't be established.
ECDSA key fingerprint is cf:e1:ea:86:a4:0c:cd:ec:9d:b9:bc:90:9d:2b:db:d5.
Are you sure you want to continue connecting (yes/no)? yes
0.0.0.0: Warning: Permanently added '0.0.0.0' (ECDSA) to the list of known hosts.
0.0.0.0: starting secondarynamenode, logging to /opt/hadoop/hadoop-2.5.1/logs/hadoop-hduser-secondarynamenode-zkserver1.fidelus.com.out
0.0.0.0: nice: $HADOOP_INSTALL/bin/hdfs: No such file or directory
14/09/22 12:24:58 WARN util.NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable

bin目录有hdfs文件，其所有者是hduser（我正在以hduser的身份运行进程）。 我的$ HADOOP_INSTALL设置指向hadoop目录（/opt/hadoop/hadoop-2.5.1）。我是否应该使用权限，配置更改任何内容，或者只是将目录移出opt而不是将其移至/ usr / local？

更新：当我运行start-yarn.sh时，我收到以下消息：

localhost: Error: Could not find or load main class org.apache.hadoop.yarn.server.nodemanager.NodeManager

更新我将目录移动到/ usr / local但我得到了相同的警告消息。

更新我按照jps命令运行ResourceManager。但是，当我尝试启动纱线时，它会因上面给出的错误而失败。我可以访问端口8088上的resourcemanager UI。有什么想法吗？

Answer 1

尝试使用以下命令运行namenode（而不是使用start-dfs.sh）并查看是否有效。

    hadoop-daemon.sh start namenode
    hadoop-daemon.sh start secondarynamenode
    hadoop-daemon.sh start datanode
    hadoop-daemon.sh start nodemanager
    mr-jobhistory-daemon.sh start historyserver

在ubuntu上设置Hadoop YARN（单节点）

1 个答案: