Hadoop temp direcotry issue - namenode disappear while restarting.

Hadoop temp direcotry issue 

While running hadoop in psudo-distributed mode  you may see the error

'directory /tmp/hadoop-{user}/dfs/name is inconsistent state'.

This happens because each system shutdown cleans up unwanted temp folders and files from /tmp folder.So pointing your hadoop dfs location other than default /tmp folder will solve this issue.

You can edit onf/hdfs-site.xml and set dfs location specific to your box



This will remove namenode, datanode errors. But you may get errors related jobtracker and other process still the most other files pointing to the default /tmp directory.

The default value for all of the hadoop related directories will be like below.

  • dfs.name.dir -> ${hadoop.tmp.dir}/dfs/name.
  • dfs.data.dir -> ${hadoop.tmp.dir}/dfs/data.
  • fs.checkpoint.dir:-> ${hadoop.tmp.dir}/dfs/namesecondary.

One quick solution is to change hadoop tmp directory to point folder of your interest.

Edit hdfs-site.xml as below



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