Hi, I'm getting the below error while connecting to name node  Failed to start Hadoop namenode. Return value: 1 [FAILED] i have checked the log file [cloudera@quickstart hadoop-hdfs]$ cat hadoop-hdfs-namenode-quickstart.cloudera.out 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) 15211 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   Can you please tell me where can i check core-site.xml file properties and how to change that as i'm new to big data             ... View more