0 错误重现
org.apache.hadoop.ipc.RemoteException(java.io.IOException): File /user/root/.sparkStaging/application_1623379050768_0061/__spark_libs__3146133095609402480.zip could only be replicated to 0 nodes instead of minReplication (=1). There are 1 datanode(s) running and 1 node(s) are excluded in this operation.
1 问题原因
hadoop启动异常，部分hadoop应用并未启动成功。
2 解决方法
重新启动hadoop，方法如下：
- 1,删除hadoop下配置的hdfs-site.xml中的配置的路径下的文件夹，例如
/home/hadoop/datanode/data/current. - 2,重启namenode
$ cd /usr/app/hadoop-2.10.1/bin && ./hadoop namenode -format
- 3,重启hadoop
$ cd /usr/app/hadoop-2.10.1/sbin && sh ./start-all.sh
- 4,查看启动的应用
# Jps
21488 ResourceManager
23296 DataNode
23656 NodeManager
22298 NameNode
22507 SecondaryNameNode
24973 Jps
