ansible/roles/hadoop/tasks/main.yml

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- name: "install hadoop tarball"
  unarchive: src={{ tarballs_dir }}/{{ hadoop_tarball }} dest={{ install_dir }} creates={{ hadoop_home }} copy=yes
- name: "configure hadoop with templates"
  template: src={{ item }} dest={{ hadoop_home }}/etc/hadoop/{{ item }}
  with_items:
    - core-site.xml
    - hdfs-site.xml
    - yarn-site.xml
    - mapred-site.xml
- name: "configure hadoop 2"
  template: src={{ item }} dest={{ hadoop_home }}/etc/hadoop/{{ item }}
  with_items:
    - slaves
  when: hadoop_major_version == '2'
- name: "configure hadoop 3"
  template: src={{ item }} dest={{ hadoop_home }}/etc/hadoop/{{ item }}
  with_items:
    - workers
  when: hadoop_major_version == '3'
- name: "copy spark yarn shuffle jar to hadoop lib"
  command: cp {{ spark_home }}/yarn/spark-{{ spark_version }}-yarn-shuffle.jar {{ hadoop_home }}/share/hadoop/yarn/lib/ creates={{ hadoop_home }}/share/hadoop/yarn/lib/spark-{{ spark_version }}-yarn-shuffle.jar
  when: "'spark' in groups"
- name: "setup hadoop short circuit socket dir"
  file: path=/var/lib/hadoop-hdfs state=directory owner={{ cluster_user }} group={{ cluster_group }} mode=0755
  become: yes
- name: "Configure hadoop log dir"
  replace:
    path: "{{ hadoop_home }}/etc/hadoop/hadoop-env.sh"
    regexp: '.*export\s+HADOOP_LOG_DIR.*'
    replace: "export HADOOP_LOG_DIR={{ worker_data_dirs[0] }}/logs/hadoop"
- name: "Create hadoop log dir"
  file: path={{ worker_data_dirs[0] }}/logs/hadoop state=directory