to fix hadoop config template
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Key: HADOOP-7658
URL: https://issues.apache.org/jira/browse/HADOOP-7658
Project: Hadoop Common
Issue Type: Bug
Reporter: Giridharan Kesavan
hadoop rpm config template by default sets the HADOOP_SECURE_DN_USER,
HADOOP_SECURE_DN_LOG_DIR & HADOOP_SECURE_DN_PID_DIR
the above values should only be set for secured deployment ;
# On secure datanodes, user to run the datanode as after dropping privileges
export HADOOP_SECURE_DN_USER=${HADOOP_HDFS_USER}
# Where log files are stored. $HADOOP_HOME/logs by default.
export HADOOP_LOG_DIR=${HADOOP_LOG_DIR}/$USER
# Where log files are stored in the secure data environment.
export HADOOP_SECURE_DN_LOG_DIR=${HADOOP_LOG_DIR}/${HADOOP_HDFS_USER}
# The directory where pid files are stored. /tmp by default.
export HADOOP_PID_DIR=${HADOOP_PID_DIR}
export HADOOP_SECURE_DN_PID_DIR=${HADOOP_PID_DIR}
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