02-13-2017 02:06 PM
02-13-2017 07:45 PM - edited 02-13-2017 07:48 PM
WARN org.apache.hadoop.hdfs.server.datanode.DataNode: Problem connecting to server: 0.0.0.0/0.0.0.0:8022
From the above error it is clear that the external datanode is having trouble connecting to Namenode.
You can do one thing.
Check the status of the namenode you are connect by
Sudo Service hadoop-hdfs-namenode status
Sudo Service hadoop-hdfs-secondarynamenode status
if it has not started then you may start it by replacing the status with start if you dont have authorization you should contact the hadoop admin . Also please check the same for Secondarynamenode.