Druid Overlord

Overlord component manages task distribution to middle managers.

The overlord node is responsible for accepting tasks, coordinating task distribution, creating locks around tasks, and returning statuses to callers. Overlord can be configured to run in one of two modes - local or remote (local being default). In remote mode, the overlord and middle manager are run in separate processes and you can run each on a different server.

module.exports =
  deps:
    krb5_client: module: 'masson/core/krb5_client', local: true
    java: module: 'masson/commons/java', local: true, recommanded: true
    zookeeper_server: module: 'ryba/zookeeper/server'
    # hdfs_client: module: 'ryba/hadoop/hdfs_client'
    # mapred_client: module: 'ryba/hadoop/mapred_client'
    druid: module: 'ryba/druid/base', local: true, auto: true, implicit: true
    # druid_coordinator: module: 'ryba/druid/coordinator'
    druid_overlord: module: 'ryba/druid/overlord'
    # druid_middlemanager: module: 'ryba/druid/middlemanager'
  configure:
    'ryba/druid/overlord/configure'
  commands:
    'install': [
      'ryba/druid/overlord/install'
      'ryba/druid/overlord/start'
    ]
    'start':
      'ryba/druid/overlord/start'
    'status':
      'ryba/druid/overlord/status'
    'stop':
      'ryba/druid/overlord/stop'