Files
impala/testdata/bin/wait-for-metastore.py
Alex Behm 9cabee4a71 Wait for the Metastore to come up before starting HiveServer2.
Change-Id: Ic8e29efe63f6745e1ff44248657cbd7882bb16d9
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1626
Reviewed-by: Lenni Kuff <lskuff@cloudera.com>
Tested-by: jenkins
Reviewed-on: http://gerrit.ent.cloudera.com:8080/1670
Reviewed-by: Alex Behm <alex.behm@cloudera.com>
2014-02-25 21:05:33 -08:00

61 lines
2.3 KiB
Python

#!/usr/bin/env python
# Copyright (c) 2012 Cloudera, Inc. All rights reserved.
#
# Licensed 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.
#
# This script waits for the Hive Metastore service to become available by attempting
# to execute the get_database("default") Thrift RPC until the call succeeds,
# or a timeout is reached.
import time
from optparse import OptionParser
from tests.util.thrift_util import create_transport
# Imports required for Hive Metastore Client
from hive_metastore import ThriftHiveMetastore
from thrift.transport import TTransport, TSocket
from thrift.protocol import TBinaryProtocol
parser = OptionParser()
parser.add_option("--metastore_hostport", dest="metastore_hostport",
default="localhost:9083", help="Metastore hostport to wait for.")
parser.add_option("--transport", dest="transport", default="buffered",
help="Transport to use for connecting to HiveServer2. Valid values: "
"'buffered', 'kerberos', 'plain_sasl'.")
options, args = parser.parse_args()
metastore_host, metastore_port = options.metastore_hostport.split(':')
hive_transport = create_transport(metastore_host, metastore_port, "metastore",
options.transport)
protocol = TBinaryProtocol.TBinaryProtocol(hive_transport)
hive_client = ThriftHiveMetastore.Client(protocol)
# Try to connect to the Hive metastore
now = time.time()
TIMEOUT_SECONDS = 30.0
while time.time() - now < TIMEOUT_SECONDS:
try:
hive_transport.open()
resp = hive_client.get_database("default")
if resp is not None:
print "Metastore service is up at %s." % options.metastore_hostport
exit(0)
except Exception, e:
print "Waiting for the Metastore at %s..." % options.metastore_hostport
finally:
hive_transport.close()
time.sleep(0.5)
print "Metastore service failed to start within %s seconds." % TIMEOUT_SECONDS
exit(1)