def start_spark(hadoop): # pylint: disable=w0613
hookenv.status_set('maintenance', 'Setting up Apache Spark')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
spark.configure()
spark.start()
spark.open_ports()
set_state('spark.started')
def install_spark(hadoop): # pylint: disable=w0613
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
if spark.verify_resources():
hookenv.status_set('maintenance', 'Installing Apache Spark')
spark.install()
spark.setup_spark_config()
spark.install_demo()
set_state('spark.installed')
def stop_spark():
hookenv.status_set('maintenance', 'Stopping Livy REST server')
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
livy.close_ports()
livy.stop()
remove_state('livy.started')
hookenv.status_set('maintenance', 'Stopping Apache Spark')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
spark.close_ports()
spark.stop()
remove_state('spark.started')
def reconfigure_spark(hadoop): # pylint: disable=w0613
config = hookenv.config()
if not data_changed('configuration', config):
return
hookenv.status_set('maintenance',
'Configuring Apache Spark and Livy REST server')
dist = DistConfig(data=layer.options('apache-spark'))
spark = Spark(dist)
dist = DistConfig(data=layer.options('livy'))
livy = Livy(dist)
livy.stop()
spark.stop()
spark.configure()
mode = hookenv.config()['spark_execution_mode']
livy.configure(mode)
spark.start()
livy.start()
hookenv.status_set('active', 'Ready')
