hadoop启动，DataNode报错”Incompatible clusterIDs“

启动namenode，通过50070端口查看，发现livenode只有一个--namenode，查看datanode日志，发现有”Incompatible clusterIDs“错误，提示很明显，namenode和datanode的集群id不一致

解决办法：找到core-site.xml配置文件，进入”dfs.datanode.data.dir“配置项下的目录，在current目录下有一VERSION文件，比较namenode和datanode里这个文件中的clusterID，发现不一致，因此只要将namenode和datanode的clusterID改成一致并重新启动hadoop，再通过50070查看，发现问题解决，livenodes数量变成3（总共三台）

hadoop启动，DataNode报错”Incompatible clusterIDs“

时间： 2024-10-10 00:42:51

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