#!/bin/bash

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# regarding copyright ownership.  The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
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#
#     http://www.apache.org/licenses/LICENSE-2.0
#
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echo "export JAVA_HOME=${JAVA_HOME}" >> ${HADOOP_HOME}/etc/hadoop/hadoop-env.sh

cat <<EOF > /etc/ssh/ssh_config
Host *
   StrictHostKeyChecking no
   UserKnownHostsFile=/dev/null
EOF

cat <<EOF > ${HADOOP_HOME}/etc/hadoop/core-site.xml
<configuration>
  <property>
    <name>fs.defaultFS</name>
    <value>hdfs://atlas-hadoop:9000</value>
  </property>
</configuration>
EOF

cat <<EOF > ${HADOOP_HOME}/etc/hadoop/hdfs-site.xml
<configuration>
  <property>
    <name>dfs.replication</name>
    <value>1</value>
  </property>
</configuration>
EOF

cat <<EOF > ${HADOOP_HOME}/etc/hadoop/yarn-site.xml
<configuration>
  <property>
    <name>yarn.nodemanager.aux-services</name>
    <value>mapreduce_shuffle</value>
  </property>
  <property>
    <name>yarn.nodemanager.env-whitelist</name>
    <value>JAVA_HOME,HADOOP_COMMON_HOME,HADOOP_HDFS_HOME,HADOOP_CONF_DIR,CLASSPATH_PREPEND_DISTCACHE,HADOOP_YARN_HOME,HADOOP_MAPRED_HOME</value>
  </property>
</configuration>
EOF

mkdir -p /opt/hadoop/logs
chown -R hdfs:hadoop /opt/hadoop/
chmod g+w /opt/hadoop/logs