Namenode not getting started

Question

I was using Hadoop in a pseudo-distributed mode and everything was working fine. But then I had to restart my computer because of some reason. And now when I am trying to st

Answer 1

I got the solution just share with you that will work who got the errors:

1. First check the /home/hadoop/etc/hadoop path, hdfs-site.xml and

 check the path of namenode and datanode 


  dfs.name.dir
    file:///home/hadoop/hadoopdata/hdfs/namenode



  dfs.data.dir
    file:///home/hadoop/hadoopdata/hdfs/datanode


2.Check the permission,group and user of namenode and datanode of the particular path(/home/hadoop/hadoopdata/hdfs/datanode), and check if there are any problems in all of them and if there are any mismatch then correct it. ex .chown -R hadoop:hadoop in_use.lock, change user and group

chmod -R 755  for change the permission