def startLLAPWithChaosMonkey(interval='300'):
hive_changes = {'tez-site.xml': {'tez.am.task.max.failed.attempts': '0'}}
Hive.modifyConfig(hive_changes, services=['hiveserver2'])
AMBARI_AGENT_TMP_DIR = '/var/lib/ambari-agent/tmp'
ARTIFACTS_DIR = Config.getEnv('ARTIFACTS_DIR')
LLAP_START_USER = Config.get('hive', 'HIVE_USER')
dirs = [
name for name in os.listdir(AMBARI_AGENT_TMP_DIR) if os.path.isdir(os.path.join(AMBARI_AGENT_TMP_DIR, name))
]
llap_dirs = []
for dir in dirs:
if dir.startswith('llap-slider'): llap_dirs.append(dir)
if len(llap_dirs) < 1:
logger.info("Could not find llap dir under %s" % AMBARI_AGENT_TMP_DIR)
Hive.startService(services=['hiveserver2'])
else:
llap_dir = llap_dirs[-1]
resourceConfig = os.path.join(AMBARI_AGENT_TMP_DIR, llap_dir, 'resources.json')
tmpResourceConfig = os.path.join(ARTIFACTS_DIR, 'resources.json')
propertyMap = [(["components", "LLAP"], {"yarn.container.failure.threshold": "1000"})]
util.writePropertiesToConfigJSONFileMulti(resourceConfig, tmpResourceConfig, propertyMap)
Machine.copy(tmpResourceConfig, resourceConfig, user=Machine.getAdminUser(), passwd=Machine.getAdminPasswd())
appConfig = os.path.join(AMBARI_AGENT_TMP_DIR, llap_dir, 'appConfig.json')
tmpAppConfig = os.path.join(ARTIFACTS_DIR, 'appConfig.json')
propertyMap = [
(
["global"], {
"internal.chaos.monkey.probability.containerfailure": "10000",
"internal.chaos.monkey.interval.seconds": interval,
"internal.chaos.monkey.enabled": "True"
}
)
]
util.writePropertiesToConfigJSONFileMulti(appConfig, tmpAppConfig, propertyMap)
Machine.copy(tmpAppConfig, appConfig, user=Machine.getAdminUser(), passwd=Machine.getAdminPasswd())
llapShellScript = os.path.join(AMBARI_AGENT_TMP_DIR, llap_dir, 'run.sh')
exit_code, stdout = Machine.runas(LLAP_START_USER, llapShellScript)
if exit_code != 0: logger.info("LLAP Shell Script failed to run successfully with %d" % exit_code)
for i in range(10):
time.sleep(30)
logger.info("@%d: Check if LLAP cluster is successfully deployed" % i)
exit_code, stdout = Machine.runas(LLAP_START_USER, 'slider status llap0')
if exit_code == 0:
break
elif i == 9:
logger.info("LLAP cluster failed to deploy")
def background_job_teardown(cls):
'''
Cleanup for long running Hive jobs
'''
from beaver.component.hive import Hive
logger.info(
"Make sure to switch the HiveServer2 to use the default port")
adminUser = Machine.getAdminUser()
hiveHost = Hive.getHiveHost()
for port in cls._hs2_live_ports:
pid = Machine.getPIDByPort(port, host=hiveHost, user=adminUser)
if pid:
Machine.killProcessRemote(pid, host=hiveHost, user=adminUser)
time.sleep(2)
if len(cls._hs2_live_ports) > 0:
Hive.startService(services=["hiveserver2"])
def switch_master_version(cls, action, version, config=None):
'''
Switches Hive master services' version
:param action: Whether to "upgrade" or "downgrade"
:param version: Version to be switched to
:param config: Configuration location
'''
from beaver.component.rollingupgrade.ruCommon import hdpSelect
from beaver.component.hive import Hive
currentHiveVersion = Hive.getVersion()
if action == 'upgrade':
# Backup the database used by the Hive Metastore
logger.info(
"Performing backup of the Hive Metastore DB before starting the upgrade"
)
Hive.backupMetastoreDB(cls._metastore_backup_file)
node = Hive.getHiveHost()
# Stop the old Hive Metastore
logger.info("Stopping the Hive Metastore")
Hive.stopService(services=["metastore"])
# Upgrade Hive Metastore servers to new version
hdpSelect.changeVersion("hive-metastore", version, node)
if action == 'upgrade':
logger.info("Upgrading the Hive metastore schema")
Hive.upgradeSchema()
# Restart Hive Metastore servers one at a time
logger.info("Restarting the Hive Metastore")
Hive.startService(services=["metastore"])
# Start new Hive Server 2 instance
confHS2Port = Hive.getHiveserver2ThriftPort()
hs2port = util.getNextAvailablePort(node, confHS2Port)
hdpSelect.changeVersion("hive-server2", version, node)
Hive.modifyConfig(config,
services=['hiveserver2'],
restartService=False)
logger.info(
"Starting a new HiveServer2 at port '%d' for assisting rolling-upgrade"
% hs2port)
if hs2port != confHS2Port:
changes = {'hive-site.xml': {'hive.server2.thrift.port': hs2port}}
Hive.modifyConfig(changes,
services=["hiveserver2"],
restartService=False)
Hive.startService(services=["hiveserver2"])
cls._hs2_live_ports = [Hive.getHiveserver2ThriftPort(), hs2port]
# Deregister the old Hive Server 2 instances
logger.info("Deregistering the HiveServer2 on version '%s'" %
currentHiveVersion)
Hive.deregisterHiveServer2(version=currentHiveVersion)
from beaver.component.hcatalog import Hcatalog
# Stop the old WebHCat server
logger.info("Stopping the WebHCat server")
node = Config.get('templeton',
'TEMPLETON_HOST',
default=Machine.getfqdn())
webhcatPort = Config.get('templeton',
'TEMPLETON_PORT',
default="50111")
# Stop the old WebHCat server
logger.info("Stop the WebHCat server")
Hcatalog.stop(node)
# Upgrade WebHCat to the new version
hdpSelect.changeVersion("hive-webhcat", version, node)
# Start the WebHCat server
logger.info("Restarting the WebHCat server")
newConfDir = os.path.join(Config.getEnv('ARTIFACTS_DIR'),
'localWebhcatConf')
if os.path.exists(newConfDir):
Hcatalog.start(node, hcat_confdir=newConfDir)
else:
Hcatalog.start(node)
