2017/04/18

Apache Hadoop - HDFS NameNode in Safemode

I noticed today that I am unable to perform any operations on the cluster, not even simple operations like creating a directory on HDFS.  Checking the status of NameNode reveals that it is in Safe mode.

To leave the NameNode from Safe mode use the command as below:



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File Handling with Python

This little utility is for copying files from source to target directories.  On the way it checks whether a directory exists in the target, ...