Wednesday, November 23, 2011

HDFS namenode won't start after disk full error

If you have trouble restarting the NameNode in a Hadoop cluster after a disk full error, if you don't mind losing some data, you can do the following to get it back up.

Find the 'edits' file in the hadoop and write this sequence to it :

printf "\xff\xff\xff\xee\xff" > edits

After that, you should be able to start hadoop. Credit here.

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