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import optparse
from pprint import pprint
import logging
import sys
import math
import ast
''' Reserved for OS + DN + NM, Map: Memory => Reservation '''
reservedStack = { 4:1, 8:2, 16:2, 24:4, 48:6, 64:8, 72:8, 96:12,
128:24, 256:32, 512:64}
''' Reserved for HBase. Map: Memory => Reservation '''
reservedHBase = {4:1, 8:1, 16:2, 24:4, 48:8, 64:8, 72:8, 96:16,
128:24, 256:32, 512:64}
GB = 1024
def getMinContainerSize(memory):
if (memory <= 4):
return 256
elif (memory <= 8):
return 512
elif (memory <= 24):
return 1024
else:
return 2048
pass
def getReservedStackMemory(memory):
if (reservedStack.has_key(memory)):
return reservedStack[memory]
if (memory <= 4):
ret = 1
elif (memory >= 512):
ret = 64
else:
ret = 1
return ret
def getReservedHBaseMem(memory):
if (reservedHBase.has_key(memory)):
return reservedHBase[memory]
if (memory <= 4):
ret = 1
elif (memory >= 512):
ret = 64
else:
ret = 2
return ret
def main():
log = logging.getLogger(__name__)
out_hdlr = logging.StreamHandler(sys.stdout)
out_hdlr.setFormatter(logging.Formatter(' %(message)s'))
out_hdlr.setLevel(logging.INFO)
log.addHandler(out_hdlr)
log.setLevel(logging.INFO)
parser = optparse.OptionParser()
memory = 0
cores = 0
disks = 0
hbaseEnabled = True
parser.add_option('-c', '--cores', default = 16,
help = 'Number of cores on each host')
parser.add_option('-m', '--memory', default = 64,
help = 'Amount of Memory on each host in GB')
parser.add_option('-d', '--disks', default = 4,
help = 'Number of disks on each host')
parser.add_option('-k', '--hbase', default = "True",
help = 'True if HBase is installed, False is not')
(options, args) = parser.parse_args()
cores = int (options.cores)
memory = int (options.memory)
disks = int (options.disks)
hbaseEnabled = ast.literal_eval(options.hbase)
log.info("Using cores=" + str(cores) + " memory=" + str(memory) + "GB" +
" disks=" + str(disks) + " hbase=" + str(hbaseEnabled))
minContainerSize = getMinContainerSize(memory)
reservedStackMemory = getReservedStackMemory(memory)
reservedHBaseMemory = 0
if (hbaseEnabled):
reservedHBaseMemory = getReservedHBaseMem(memory)
reservedMem = reservedStackMemory + reservedHBaseMemory
usableMem = memory - reservedMem
memory -= (reservedMem)
if (memory < 2):
memory = 2
reservedMem = max(0, memory - reservedMem)
memory *= GB
containers = int (min(2 * cores,
min(math.ceil(1.8 * float(disks)),
memory/minContainerSize)))
if (containers <= 2):
containers = 3
log.info("Profile: cores=" + str(cores) + " memory=" + str(memory) + "MB"
+ " reserved=" + str(reservedMem) + "GB" + " usableMem="
+ str(usableMem) + "GB" + " disks=" + str(disks))
container_ram = abs(memory/containers)
if (container_ram > GB):
container_ram = int(math.floor(container_ram / 512)) * 512
log.info("Num Container=" + str(containers))
log.info("Container Ram=" + str(container_ram) + "MB")
log.info("Used Ram=" + str(int (containers*container_ram/float(GB))) + "GB")
log.info("Unused Ram=" + str(reservedMem) + "GB")
log.info("yarn.scheduler.minimum-allocation-mb=" + str(container_ram))
log.info("yarn.scheduler.maximum-allocation-mb=" + str(containers*container_ram))
log.info("yarn.nodemanager.resource.memory-mb=" + str(containers*container_ram))
map_memory = container_ram
reduce_memory = 2*container_ram if (container_ram <= 2048) else container_ram
am_memory = max(map_memory, reduce_memory)
log.info("mapreduce.map.memory.mb=" + str(map_memory))
log.info("mapreduce.map.java.opts=-Xmx" + str(int(0.8 * map_memory)) +"m")
log.info("mapreduce.reduce.memory.mb=" + str(reduce_memory))
log.info("mapreduce.reduce.java.opts=-Xmx" + str(int(0.8 * reduce_memory)) + "m")
log.info("yarn.app.mapreduce.am.resource.mb=" + str(am_memory))
log.info("yarn.app.mapreduce.am.command-opts=-Xmx" + str(int(0.8*am_memory)) + "m")
log.info("mapreduce.task.io.sort.mb=" + str(int(0.4 * map_memory)))
pass
if __name__ == '__main__':
try:
main()
except(KeyboardInterrupt, EOFError):
print("\nAborting ... Keyboard Interrupt.")
sys.exit(1)
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