Error: Could not find or load main class resourcemanager

最新推荐文章于 2023-02-28 21:50:04 发布

喝粥也会胖的唐僧

最新推荐文章于 2023-02-28 21:50:04 发布

阅读量4.3k

点赞数 6

CC 4.0 BY-SA版权

分类专栏：大数据

本文链接：https://blog.youkuaiyun.com/zhou_438/article/details/88321118

大数据专栏收录该内容

29 篇文章

订阅专栏

本文记录了在启动Hadoop集群ResourceManager时遇到的错误“Could not find or load main class”，并详细描述了从使用错误的启动脚本到正确启动ResourceManager和NodeManager的全过程。

之前启动都没有问题，今天启动报错了

[root@hadoop001 hadoop-2.7.1]# sbin/hadoop-daemon.sh start resourcemanager
starting resourcemanager, logging to /opt/software/hadoop-2.7.1/logs/hadoop-root-resourcemanager-hadoop001.out
Error: Could not find or load main class resourcemanager
[root@hadoop001 hadoop-2.7.1]# jps
1282 DataNode
1421 Jps
1182 NameNode
[root@hadoop001 hadoop-2.7.1]# sbin/hadoop-daemon.sh start nodemanager
starting nodemanager, logging to /opt/software/hadoop-2.7.1/logs/hadoop-root-nodemanager-hadoop001.out
Error: Could not find or load main class nodemanager

经过仔细分析，原来是自己的启动的文件选择错了，顺手写成了hadoop-daemon.sh，而实际上是yarn-daemon.sh

[root@hadoop001 hadoop-2.7.1]# sbin/yarn-daemon.sh start resourcemanager
starting resourcemanager, logging to /opt/software/hadoop-2.7.1/logs/yarn-root-resourcemanager-hadoop001.out
[root@hadoop001 hadoop-2.7.1]# jps
1282 DataNode
1812 Jps
1590 ResourceManager
1182 NameNode
[root@hadoop001 hadoop-2.7.1]# sbin/yarn-daemon.sh start nodemanager
starting nodemanager, logging to /opt/software/hadoop-2.7.1/logs/yarn-root-nodemanager-hadoop001.out
[root@hadoop001 hadoop-2.7.1]# jps
1282 DataNode
1590 ResourceManager
1847 NodeManager
1977 Jps
1182 NameNode

怪不得自己的会启动不了