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Cloudera Hadoop datanode not starting

New Contributor

I have installed CDH 5 in single node Ubuntu 14.04 LTS machine in pseudo distributed mode using the cloudera guide : Previously I had installed Mvr1. It was running fine. Then i decided to migrate to YARN. I used the uninstallation process of Mvr1 mentioned in the tutorial then continued with the YARN installation. But after I start all services,I see all services starting except my datanode. Even when I am checking the status of datanode in the web console it shows no of live nodes as zero. I have tried to start the datanode separately with the service command but it shows "Failed to start Hadoop datanode. Return value: 1". I have tried formatting the namenode and restarting all services but with no help. Can you help me understand what has gone wrong?


Can you post the status message of the datanode


You need to check the logs: