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Added enhancement in ambari server setup script to tweak thread count #1

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Added enhancement in ambari server setup script to tweak thread count #1

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34 changes: 34 additions & 0 deletions ambari-server/src/main/python/ambari_server/serverSetup.py
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Original file line number Diff line number Diff line change
Expand Up @@ -24,6 +24,8 @@
import shutil
import sys
import subprocess
import fileinput
import multiprocessing

from ambari_commons.exceptions import FatalException
from ambari_commons.firewall import Firewall
Expand Down Expand Up @@ -1040,6 +1042,32 @@ def check_setup_already_done():

return properties.get_property(JDK_NAME_PROPERTY) and properties.get_property(JDBC_DATABASE_PROPERTY)


#
# This fix solves ui issue that occurs if number of cores if more than 48.
#
def alterAmbariThreadProperties():
inputFile = '/etc/ambari-server/conf/ambari.properties'
checkStr1 = 'client.threadpool.size.max'
checkStr2 = 'agent.threadpool.size.max'
checkStr3 = 'view.extraction.threadpool.size.max'
checkStr4 = 'server.execution.scheduler.maxThreads'
lines = []
with open(inputFile) as infile:
for line in infile:
if line.find(checkStr1) != -1:
line = re.sub('client.threadpool.size.max=(.*)','client.threadpool.size.max=64\n', line.rstrip())
elif line.find(checkStr2) != -1:
line = re.sub('agent.threadpool.size.max=(.*)','agent.threadpool.size.max=64\n', line.rstrip())
elif line.find(checkStr3) != -1:
line = re.sub('view.extraction.threadpool.size.max=(.*)','view.extraction.threadpool.size.max=64\n', line.rstrip())
elif line.find(checkStr4) != -1:
line = re.sub('server.execution.scheduler.maxThreads=(.*)','server.execution.scheduler.maxThreads=10\n', line.rstrip())
lines.append(line)
with open(inputFile, 'w') as outfile:
for line in lines:
outfile.write(line)

#
# Setup the Ambari Server.
#
Expand All @@ -1057,6 +1085,12 @@ def setup(options):
err = configDefaults.MESSAGE_ERROR_SETUP_NOT_ROOT
raise FatalException(4, err)

# Alter max thread counts in ambari.properties file if number of cores is greater than 48.
cores = multiprocessing.cpu_count()
permittedcores = 48
if cores > permittedcores:
alterAmbariThreadProperties()

# proceed jdbc properties if they were set
if _check_jdbc_options(options):
proceedJDBCProperties(options)
Expand Down