note: if you just want to solve this problem you can skip 1,2 and go straight to the 3 and 4 solution steps
- one-click start cluster view where the datanode’s log is
sh start-all.sh
enter the log view
use shift+g to enter the last row mode, in the upward turn, see the first INFO, there is WARN below, there is a prompt message, about the datenode clusterID and namenode clusterID is not consistent.
- enter CD/export/servers/hadoop – server – cdh5.14.0/hadoopDatas/datanodeDatas/current/
see cat VERSION
this is consistent with the namenode old ID
3. delete current
for each node in the cluster
- just restart the cluster, and check whether all the starts have been successful
sh start-all-sh
- just restart the cluster, and check whether all the starts have been successful
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