Namenode is going under safemode

[#1]

Namenode service is failing to start after server reboot or even service restart. Below is the error message in the log file.

Retrying after 10 seconds. Reason: Execution of 'hdfs dfsadmin -fs hdfs://namenode.localdomain:8020 -safemode get | grep 'Safe mode is OFF'' returned 1.

Workaround: manually take the namenode out of safemode using

[hdfs@namenode ~]$ hdfs dfsadmin -fs hdfs://namenode.localdomain:8020 -safemode get

Safe mode is ON

[hdfs@namenode ~]$ hdfs dfsadmin -fs hdfs://namenode.localdomain:8020 -safemode leave

Safe mode is OFF

[hdfs@namenode ~]$ hdfs dfsadmin -fs hdfs://namenode.localdomain:8020 -safemode get

Safe mode is OFF

Please advise.

Thank you,

Sachin A

[#2]

@Sachin Ambardekar

See if https://community.hortonworks.com/questions/11042/how-to-verify-if-namenode-is-good-to-leave-safemod... is helpful.