Hi Atul, Please can you share the datanode exception logs ?. Check if namenode and datanode hostname mapping is proper or not in /etc/hosts.
Put operation is failing because datanode’s are not connected to the namenode. -Surendra From: Atul Rajan [mailto:[email protected]] Sent: 24 August 2017 09:32 To: [email protected] Subject: Data streamer java exception Hello Team, I am setting up a hadoop 3.0 alpha cluster of 4 nodes in RHEL 7.2 everything is set namenode datanode resource manager node manager but data node is not able to connect to namenode i am getting retrying logs in datanode. Also when copying files from local to hdfs data streamer java exceptions are being thrown. can you please help me out here. Thanks and Regards Atul Rajan -Sent from my iPhone
