Writing to HDFS could only be replicated to 0 nodes instead of minReplication (=1)

1.Stop all Hadoop daemons

for x in `cd /etc/init.d ; ls hadoop*` ; do sudo service $x stop ; done

2.Remove all files from /var/lib/hadoop-hdfs/cache/hdfs/dfs/name

Eg: devan@Devan-PC:~$ sudo rm -r /var/lib/hadoop-hdfs/cache/

3.Format Namenode

sudo -u hdfs hdfs namenode -format

4.Start all Hadoop daemons

for x in `cd /etc/init.d ; ls hadoop*` ; do sudo service $x start ; done

Stop All Hadoop Service

I had the same issue, I was running very low on disk space. Freeing up disk solved it.

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