Hi Gautham , Thanks for the reply. I am looking into the below log file and details are below. I am not able to figure why its happening from the logs. I installed hadoop ( name node and datanode as root user and starting the daemons from root user , Is there any issue in that. Log details cat /var/log/hadoop-hdfs/hadoop-hdfs-datanode-data-node-01.out cat: cat: No such file or directory ulimit -a for user hdfs core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited scheduling priority (-e) 0 file size (blocks, -f) unlimited pending signals (-i) 256725 max locked memory (kbytes, -l) 64 max memory size (kbytes, -m) unlimited open files (-n) 32768 pipe size (512 bytes, -p) 8 POSIX message queues (bytes, -q) 819200 real-time priority (-r) 0 stack size (kbytes, -s) 10240 cpu time (seconds, -t) unlimited max user processes (-u) 65536 virtual memory (kbytes, -v) unlimited file locks (-x) unlimited Thanks, Rath
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