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druid/examples/bin/start-druid-main.py

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# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# 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
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
import sys
import os
import multiprocessing
import argparse
import subprocess
import platform
BASE_CONFIG_PATH = "conf/druid/auto"
MEM_GB_SUFFIX = "g"
MEM_MB_SUFFIX = "m"
XMX_PARAMETER = "-Xmx"
XMS_PARAMETER = "-Xms"
DIRECT_MEM_PARAMETER = "-XX:MaxDirectMemorySize"
SERVICE_SEPARATOR = ","
TASK_JAVA_OPTS_ARRAY = ["-server", "-Duser.timezone=UTC", "-Dfile.encoding=UTF-8", "-XX:+ExitOnOutOfMemoryError",
"-Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager"]
TASK_JAVA_OPTS_PROPERTY = "druid.indexer.runner.javaOptsArray"
TASK_WORKER_CAPACITY_PROPERTY = "druid.worker.capacity"
TASK_COUNT = "task-count"
TASK_MEM_TYPE_LOW = "low"
TASK_MEM_TYPE_HIGH = "high"
TASK_MEM_MAP = {
TASK_MEM_TYPE_LOW: ["-Xms256m", "-Xmx256m", "-XX:MaxDirectMemorySize=256m"],
TASK_MEM_TYPE_HIGH: ["-Xms1g", "-Xmx1g", "-XX:MaxDirectMemorySize=1g"]
}
BROKER = "broker"
ROUTER = "router"
COORDINATOR = "coordinator-overlord"
HISTORICAL = "historical"
MIDDLE_MANAGER = "middleManager"
TASKS = "tasks"
INDEXER = "indexer"
DEFAULT_SERVICES = [
BROKER,
ROUTER,
COORDINATOR,
HISTORICAL,
MIDDLE_MANAGER
]
SUPPORTED_SERVICES = [
BROKER,
ROUTER,
COORDINATOR,
HISTORICAL,
MIDDLE_MANAGER,
INDEXER
]
SERVICE_MEMORY_RATIO = {
MIDDLE_MANAGER: 1,
ROUTER: 2,
COORDINATOR: 30,
BROKER: 46,
HISTORICAL: 80,
TASKS: 30,
INDEXER: 32
}
MINIMUM_MEMORY_MB = {
MIDDLE_MANAGER: 64,
ROUTER: 128,
TASKS: 1024,
BROKER: 900,
COORDINATOR: 256,
HISTORICAL: 900,
INDEXER: 1124
}
HEAP_TO_TOTAL_MEM_RATIO = {
MIDDLE_MANAGER: 1,
ROUTER: 1,
COORDINATOR: 1,
BROKER: 0.60,
HISTORICAL: 0.40,
TASKS: 0.50,
INDEXER: 0.50
}
LOGGING_ENABLED = False
def print_if_verbose(message):
if LOGGING_ENABLED:
print(message)
def configure_parser():
parser = argparse.ArgumentParser(
prog='start-druid',
formatter_class=argparse.RawTextHelpFormatter,
epilog=
"""
sample usage:
start-druid
Start up all the services (including zk).
start-druid -m=100g
Start up all the services (including zk)
using a total memory of 100GB.
start-druid -m=100g --compute
Compute memory distribution and validate arguments.
start-druid -m=100g -s=broker,router
Starts a broker and a router, using a total memory of 100GB.
start-druid -m=100g --s=broker,router \\
-c=conf/druid/single-server/custom
Starts a broker and a router, using a total memory of 100GB.
Reads configs for each service (jvm.config, runtime.properties)
from respective folders inside the given root config path.
start-druid -s=broker,router \\
-c=conf/druid/single-server/custom
Starts a broker and a router service, reading service configs
from the given root directory. Calculates memory requirements for
each service, if required, using upto 80% of the total system memory.
start-druid -m=100g \\
-s=broker,router \\
-c=conf/druid/single-server/custom \\
--zk
Starts broker, router and zookeeper.
zookeeper config is read from conf/zk.
"""
)
parser.add_argument('--memory', '-m', type=str, required=False,
help='Total memory for all processes (services and tasks, if any). \n'
'This parameter is ignored if each service already has a jvm.config \n'
'in the given conf directory. e.g. 500m, 4g, 6g\n')
parser.add_argument('--services', '-s', type=str, required=False,
help='List of services to be started, subset of \n'
'{broker, router, middleManager, historical, coordinator-overlord, indexer}. \n'
'If the argument is not given, broker, router, middleManager, historical, coordinator-overlord \n'
'and zookeeper is started. e.g. -s=broker,historical')
parser.add_argument('--config', '-c', type=str, required=False,
help='Relative path to the directory containing common and service \n'
'specific properties to be overridden. \n'
'This directory must contain \'_common\' directory with \n'
'\'common.jvm.config\' & \'common.runtime.properties\' files. \n'
'If this argument is not given, config from \n'
'conf/druid/auto directory is used.\n')
parser.add_argument('--compute', action='store_true',
help='Does not start Druid, only displays the memory allocated \n'
'to each service if started with the given total memory.\n')
parser.add_argument('--zk', '-zk', action='store_true',
help='Specification to run zookeeper, \n'
'zk config is picked up from conf/zk.')
parser.add_argument('--verbose', action='store_true', help='Log details')
parser.set_defaults(zk=False)
parser.set_defaults(compute=False)
parser.set_defaults(verbose=False)
return parser
def is_file(path):
return os.path.isfile(path)
def is_dir(path):
return os.path.isdir(path)
def resolve_path(path):
return os.path.abspath(path)
def validate_common_jvm_args(config):
if is_file('{0}/_common/common.jvm.config'.format(config)) is False:
raise ValueError('_common/common.jvm.config file is missing in the root config, '
'check {0}/_common directory'.format(BASE_CONFIG_PATH))
def validate_common_directory(config):
if is_dir('{0}/_common'.format(config)) is False:
raise ValueError(
'_common directory is missing in the root config, check {0}/_common directory'.format(BASE_CONFIG_PATH))
if is_file('{0}/_common/common.runtime.properties'.format(config)) is False:
raise ValueError('_common/common.runtime.properties file is missing in the root config, '
'check {0}/_common directory'.format(BASE_CONFIG_PATH))
def parse_arguments(args):
service_list = []
config = ""
total_memory = ""
compute = False
zk = False
if args.compute:
compute = True
if args.zk:
zk = True
if args.config is not None:
config = resolve_path(os.path.join(os.getcwd(), args.config))
if is_dir(config) is False:
raise ValueError('config {0} not found'.format(config))
if args.memory is not None:
total_memory = args.memory
if args.services is not None:
services = args.services.split(SERVICE_SEPARATOR)
for service in services:
if service not in SUPPORTED_SERVICES:
raise ValueError('Invalid service name {0}, should be one of {1}'.format(service, DEFAULT_SERVICES))
if service in service_list:
raise ValueError('{0} is specified multiple times'.format(service))
service_list.append(service)
if INDEXER in services and MIDDLE_MANAGER in services:
raise ValueError('one of indexer and middleManager can run')
if len(service_list) == 0:
# start all services
service_list = DEFAULT_SERVICES
zk = True
return config, total_memory, service_list, zk, compute
def print_startup_config(service_list, config, zk):
print_if_verbose('Starting {0}'.format(service_list))
print_if_verbose('Reading config from {0}'.format(config))
if zk:
zk_config = resolve_path('{0}/../conf/zk'.format(os.getcwd()))
print_if_verbose('Starting zk, reading default config from {0}'.format(zk_config))
print_if_verbose('\n')
def task_memory_params_present(config, service):
java_opts_property_present = False
worker_capacity_property_present = False
if is_file('{0}/{1}/runtime.properties'.format(config, service)):
with open('{0}/{1}/runtime.properties'.format(config, service)) as file:
for line in file:
if line.startswith(TASK_JAVA_OPTS_PROPERTY):
java_opts_property_present = True
elif line.startswith(TASK_WORKER_CAPACITY_PROPERTY):
worker_capacity_property_present = True
return java_opts_property_present, worker_capacity_property_present
def verify_service_config(service, config):
path = '{0}/{1}/jvm.config'.format(config, service)
required_parameters = [XMX_PARAMETER, XMS_PARAMETER]
if HEAP_TO_TOTAL_MEM_RATIO.get(service) != 1:
required_parameters.append(DIRECT_MEM_PARAMETER)
with open(path) as file:
for line in file:
if line.startswith(XMX_PARAMETER) and XMX_PARAMETER in required_parameters:
required_parameters.remove(XMX_PARAMETER)
if line.startswith(XMS_PARAMETER) and XMS_PARAMETER in required_parameters:
required_parameters.remove(XMS_PARAMETER)
if line.startswith(DIRECT_MEM_PARAMETER) and DIRECT_MEM_PARAMETER in required_parameters:
required_parameters.remove(DIRECT_MEM_PARAMETER)
if len(required_parameters) > 0:
params = ",".join(required_parameters)
raise ValueError('{0} missing in {1}/jvm.config'.format(params, service))
if service == MIDDLE_MANAGER:
if is_file('{0}/{1}/runtime.properties'.format(config, service)) is False:
raise ValueError('{0}/runtime.properties file is missing in the root config'.format(service))
mm_task_java_opts_prop, mm_task_worker_capacity_prop = task_memory_params_present(config, MIDDLE_MANAGER)
if mm_task_java_opts_property is False:
raise ValueError('{0} property missing in {1}/runtime.properties'.format(TASK_JAVA_OPTS_PROPERTY, service))
def should_compute_memory(config, total_memory, service_list):
"""
if memory argument is given, memory for services and tasks is computed, jvm.config file
or runtime.properties with task memory specification shouldn't be present
Alternatively, all memory related parameters are specified
which implies following should be present:
jvm.config file for all services with -Xmx=***, Xms=*** parameters
-XX:MaxDirectMemorySize=** in jvm.config for broker and historical
druid.indexer.runner.javaOptsArray (optionally druid.worker.capacity) in
rootDirectory/middleManager/runtime.properties
"""
jvm_config_count = 0
for service in service_list:
if is_file('{0}/{1}/jvm.config'.format(config, service)):
jvm_config_count += 1
mm_task_property_present = False
if MIDDLE_MANAGER in service_list:
mm_task_java_opts_prop, mm_task_worker_capacity_prop = task_memory_params_present(config, MIDDLE_MANAGER)
mm_task_property_present = mm_task_java_opts_prop or mm_task_worker_capacity_prop
indexer_task_worker_capacity_prop = False
if INDEXER in service_list:
indexer_task_java_opts_prop, indexer_task_worker_capacity_prop = task_memory_params_present(config, INDEXER)
# possible error states
# 1. memory argument is specified, also jvm.config or middleManger/runtime.properties having
# druid.indexer.runner.javaOptsArray or druid.worker.capacity parameters is present
# 2. jvm.config is not present for any service, but middleManger/runtime.properties has
# druid.indexer.runner.javaOptsArray or druid.worker.capacity parameters
# or indexer/runtime.properties has druid.worker.capacity
# 3. jvm.config present for some but not all services
# 4. jvm.config file is present for all services, but it doesn't contain required parameters
# 5. lastly, if middleManager is to be started, and it is missing task memory properties
if jvm_config_count > 0 or mm_task_property_present or indexer_task_worker_capacity_prop:
if total_memory != "":
raise ValueError(
"If jvm.config for services and/or middleManager/indexer configs "
"(druid.worker.capacity, druid.indexer.runner.javaOptsArray) is present, "
"memory argument shouldn't be specified")
if jvm_config_count == 0 and mm_task_property_present:
raise ValueError("middleManger configs (druid.indexer.runner.javaOptsArray or druid.worker.capacity) "
"is present in middleManager/runtime.properties, "
"add jvm.config for all other services")
if jvm_config_count == 0 and indexer_task_worker_capacity_prop:
raise ValueError("indexer configs (druid.worker.capacity) "
"is present in indexer/runtime.properties, "
"add jvm.config for all other services")
if jvm_config_count != len(service_list):
raise ValueError("jvm.config file should be present for all services or none")
for service in service_list:
verify_service_config(service, config)
return False
# compute memory only when none of the specified services contains jvm.config,
# if middleManager is to be started it shouldn't contain task memory properties
# if indexer is present it shouldn't contain task memory properties
return True
def get_physical_memory_linux():
mem_bytes = os.sysconf('SC_PAGE_SIZE') * os.sysconf('SC_PHYS_PAGES')
mem_mbs = int(mem_bytes / (1024 * 1024))
return mem_mbs
def get_physical_memory_osx():
p1 = subprocess.Popen(['sysctl', '-a'], stdout=subprocess.PIPE)
p2 = subprocess.check_output(['grep', 'hw.memsize'], stdin=p1.stdout)
p2 = p2.decode('utf-8')
fields = p2.split(':')
mem_mbs = int(int(fields[1]) / (1024 * 1024))
return mem_mbs
def get_physical_memory():
operating_system = platform.system()
print_if_verbose('operating system is {0}'.format(operating_system))
system_memory = None
try:
if operating_system == 'Darwin':
system_memory = get_physical_memory_osx()
elif operating_system == 'Linux':
system_memory = get_physical_memory_linux()
except Exception:
pass
return system_memory
def convert_total_memory_string(memory):
try:
if memory == '':
physical_memory = get_physical_memory()
if physical_memory is None:
raise ValueError('Please specify memory argument')
return physical_memory
elif memory.endswith(MEM_MB_SUFFIX):
return int(memory[:-1])
elif memory.endswith(MEM_GB_SUFFIX):
return 1024 * int(memory[:-1])
else:
raise ValueError('Incorrect format for memory argument, expected format is <integer_value><m/g>')
except ValueError as e:
raise e
except Exception:
raise ValueError('Incorrect format for memory argument, expected format is <integer_value><m/g>')
def check_memory_constraint(total_memory, services):
# 80% of total memory >= sum of lower bound service memory should be
lower_bound_memory = 0
service_list = list(services)
if MIDDLE_MANAGER in services:
service_list.append(TASKS)
for service in service_list:
lower_bound_memory += MINIMUM_MEMORY_MB.get(service)
required_memory = int(lower_bound_memory / 0.8)
if total_memory < required_memory:
raise ValueError('Minimum memory required for starting services is {0}m'.format(required_memory))
if total_memory >= 2 * lower_bound_memory:
return int(total_memory / 2)
else:
return lower_bound_memory
def build_mm_task_java_opts_array(memory_type):
task_memory = '-D{0}=['.format(TASK_JAVA_OPTS_PROPERTY)
mem_array = TASK_MEM_MAP.get(memory_type)
java_opts_list = TASK_JAVA_OPTS_ARRAY + mem_array
for item in java_opts_list:
task_memory += '\"{0}\",'.format(item)
task_memory = task_memory[:-1]
task_memory += ']'
return task_memory
def compute_tasks_memory(allocated_memory):
if allocated_memory >= 4096:
task_count = int(allocated_memory / 2048)
memory_type = TASK_MEM_TYPE_HIGH
task_memory_mb = 2048
else:
task_count = 2
memory_type = TASK_MEM_TYPE_LOW
task_memory_mb = 512
task_count = min(task_count, multiprocessing.cpu_count())
return memory_type, task_count, task_memory_mb
def build_memory_config(service, allocated_memory):
if service == TASKS:
memory_type, task_count, task_memory = compute_tasks_memory(allocated_memory)
java_opts_array = build_mm_task_java_opts_array(memory_type)
return ['-D{0}={1}'.format(TASK_WORKER_CAPACITY_PROPERTY, task_count),
java_opts_array], task_memory * task_count
elif service == INDEXER:
heap_memory = HEAP_TO_TOTAL_MEM_RATIO.get(service) * allocated_memory
direct_memory = int(allocated_memory - heap_memory)
heap_memory = int(heap_memory)
memory_type, task_count, task_memory = compute_tasks_memory(allocated_memory)
return ['-D{0}={1}'.format(TASK_WORKER_CAPACITY_PROPERTY, task_count),
'-Xms{0}m -Xmx{0}m -XX:MaxDirectMemorySize={1}m'.format(heap_memory, direct_memory)], \
task_memory * task_count
else:
heap_memory = HEAP_TO_TOTAL_MEM_RATIO.get(service) * allocated_memory
direct_memory = int(allocated_memory - heap_memory)
heap_memory = int(heap_memory)
if direct_memory == 0:
return '-Xms{0}m -Xmx{0}m'.format(heap_memory), allocated_memory
return '-Xms{0}m -Xmx{0}m -XX:MaxDirectMemorySize={1}m'.format(heap_memory, direct_memory), allocated_memory
def distribute_memory(services, total_memory):
service_memory_config = {}
memory_weight_sum = 0
service_list = list(services)
if MIDDLE_MANAGER in services:
service_list.append(TASKS)
for service in service_list:
memory_weight_sum += SERVICE_MEMORY_RATIO.get(service)
multiplier = total_memory / memory_weight_sum
lower_bound_memory_allocation = 0
allocated_services = set()
for service in service_list:
allocated_memory = SERVICE_MEMORY_RATIO.get(service) * multiplier
if service in MINIMUM_MEMORY_MB and allocated_memory < MINIMUM_MEMORY_MB.get(service):
allocated_memory = MINIMUM_MEMORY_MB.get(service)
service_memory_config[service], allocated_memory = build_memory_config(service, allocated_memory)
lower_bound_memory_allocation += allocated_memory
allocated_services.add(service)
if lower_bound_memory_allocation > 0:
# compute the multiplier again for remaining services
memory_weight_sum = 0
for service in service_list:
if service in allocated_services:
continue
memory_weight_sum += SERVICE_MEMORY_RATIO.get(service)
multiplier = (total_memory - lower_bound_memory_allocation) / memory_weight_sum
for service in service_list:
if service in allocated_services:
continue
allocated_memory = SERVICE_MEMORY_RATIO.get(service) * multiplier
if service in MINIMUM_MEMORY_MB and allocated_memory < MINIMUM_MEMORY_MB.get(service):
allocated_memory = MINIMUM_MEMORY_MB.get(service)
service_memory_config[service], allocated_memory = build_memory_config(service, allocated_memory)
print_if_verbose('\nMemory distribution for services:')
for key, value in service_memory_config.items():
print_if_verbose('{0}, {1}'.format(key, value))
print_if_verbose('\n')
return service_memory_config
def append_command(commands, command):
commands.append('--command')
commands.append(command)
def build_supervise_script_arguments(service_list, service_memory_config, config, zk):
commands = []
commands.append('supervise')
append_command(commands, ":verify bin/verify-java")
append_command(commands, ":verify bin/verify-default-ports")
append_command(commands, ":notify bin/greet")
append_command(commands, ":kill-timeout 10")
if zk:
append_command(commands, "!p10 zk bin/run-zk conf")
for service in service_list:
memory_config = service_memory_config.get(service)
prefix = ''
if service == MIDDLE_MANAGER:
prefix = '!p90 '
if memory_config is None:
append_command(commands, '{0}{1} bin/run-druid {1} {2}'.format(prefix, service, config))
else:
if service == MIDDLE_MANAGER:
task_config = service_memory_config.get(TASKS)
task_count = task_config[0]
task_memory = task_config[1]
append_command(
commands,
'{0}{1} bin/run-druid {1} {2} \'{3}\' \'{4} {5}\''
.format(prefix, service, config, memory_config, task_count, task_memory))
elif service == INDEXER:
task_count = memory_config[0]
jvm_args = memory_config[1]
append_command(
commands,
'{0}{1} bin/run-druid {1} {2} \'{3}\' \'{4}\''
.format(prefix, service, config, jvm_args, task_count))
else:
append_command(commands,
'{0}{1} bin/run-druid {1} {2} \'{3}\''.format(prefix, service, config, memory_config))
print_if_verbose('Supervise script args:')
for item in commands:
print_if_verbose(item)
print_if_verbose('\n')
return commands
def main():
parser = configure_parser()
args = parser.parse_args()
global LOGGING_ENABLED
LOGGING_ENABLED = args.verbose or args.compute
config, total_memory, service_list, zk, compute = parse_arguments(args)
# change directory to bin
os.chdir(os.path.dirname(sys.argv[0]))
if config == "":
config = resolve_path('{0}/../{1}'.format(os.getcwd(), BASE_CONFIG_PATH))
validate_common_directory(config)
print_startup_config(service_list, config, zk)
service_memory_config = {}
if should_compute_memory(config, total_memory, service_list):
# if memory is to be computed, _common directory should contain common.jvm.config
validate_common_jvm_args(config)
memory_in_mega_bytes = convert_total_memory_string(total_memory)
print_if_verbose('Total memory is {0}m\n'.format(memory_in_mega_bytes))
memory_to_be_used = check_memory_constraint(memory_in_mega_bytes, service_list)
print_if_verbose('Memory used for services & tasks {0}m\n'.format(memory_to_be_used))
service_memory_config = distribute_memory(service_list, memory_to_be_used)
else:
print_if_verbose('Not computing memory distribution, reading memory specification from service jvm.config & '
'middleManager/runtime.properties\n')
script_arguments = build_supervise_script_arguments(service_list, service_memory_config, config, zk)
if compute:
return
os.execv('./supervise', script_arguments)
try:
main()
except (KeyboardInterrupt, ValueError) as error:
print(error)
sys.exit(1)
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