HADOOP HA Pit-all namenode are standby

Source: Internet
Author: User


No obvious error


All Namenode are standby, that is, the ZK service is not in force

Try one: Manually force the conversion of a namenode to active

Action: On a namenode, perform hdfs haadmin-transitiontoactive--forcemanual nn1 (nn1 is one of your nameservice-id)

Result: Nn1 was successfully converted to active. But after stop-dfs.sh again start-dfs.sh, all Namenode are still standby

Conclusion: It is the problem of ZK

Try two: Initialize ZK

Action: On a namenode, perform HDFs Zkfc-formatzk

Result: After re-start-dfs.sh, everything is OK

HADOOP HA Pit-all namenode are standby

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