Issues with hadoop-common-project\hadoop-common\src\main\packages\hadoop-setup-conf.sh file

hadoop-common-project\hadoop-common\src\main\packages\hadoop-setup-conf.sh has following issues
1. check_permission does not work as expected if there are two folders with $NAME as part of their name inside $PARENT
e.g. /home/hadoop/conf, /home/hadoop/someconf,
The result of `ls -ln $PARENT | grep -w $NAME| awk '

'` is non zero..it is 0 0 and hence the following if check becomes true.

if [ "$OWNER" != "0" ]; then
RESULT=1
break
fi 

2. Spelling mistake

HADDOP_DN_ADDR="0.0.0.0:50010"

it should be

HADOOP_DN_ADDR="0.0.0.0:50010"

3. HADOOP_SNN_HOST is not set due to which the hdfs-site.xml contains following configuration

<property>
<name>dfs.namenode.http-address</name>
<value>:50070</value>
<description>
The address and the base port where the dfs namenode web ui will listen on.
If the port is 0 then the server will start on a free port.
</description>
</property>