put: File /spark-jars/zstd-jni-1.4.4-3.jar._COPYING_ could only be written to 0 of the 1 minReplication nodes. There are 0 datanode(s) running and 0 node(s) are excluded in this operation.

问题：hadoop上传文件到hdf时报错，显示没有找到datanode

解决：因为重新格式化namenode前未删除data、logs目录

方法：

1、查看/opt/module/hadoop-3.1.3/logs下hadoop-zhitu-datanode-hadoop102.log日志文件
找到namenode的clusterID
2、将/opt/module/hadoop-3.1.3/data/dfs/data/current/VERSION文件里的clusterID更改为上面找到的namenode的clusterID

参考：

https://www.cnblogs.com/Fordestiny/p/9493433.html