an error of starting hadoop-2.7.3

Question

after finishing installation of hadoop-2.7.3 with java jdk1.8.0_111 in ubuntu I used this command to start Hadoop

sbin/start-all.sh

it showed to me an error message

This script is Deprecated. Instead use start-dfs.sh and start-yarn.sh [Fatal Error] core-site.xml:19:1: Content is not allowed in prolog.

so I used the other command

sbin/start-dfs.sh

again another error show it to me

[Fatal Error] core-site.xml:19:1: Content is not allowed in prolog.

Answer 1

i think its hadoop cluster suppose to be started form bin in the hadoop installation dir example : /usr/local/bin/start-all.sh