Not able to start datanode in Hadoop

+1 vote

I ran jps command to check running daemons. Datanode is not running. I am trying to start datanode but I am getting this error:

ERROR datanode.DataNode: java.io.IOException: Incompatible namespaceIDs in /tmp/hadoop/dfs/data: namenode namespaceID = 1428034692; datanode namespaceID = 482983118

How to solve this?

Dec 12, 2018 in Big Data Hadoop by slayer
 • 29,370 points • 1,725 views

1 answer to this question.

0 votes

Follow these steps:

  • Stop namenode
  • Delete the datanode directory in dfs.datanode.data.dir
  • Start namenode and datanode
answered Dec 12, 2018 by Omkar
 • 69,220 points

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