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upgrade_through_versions_test.py
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upgrade_through_versions_test.py
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from dtest import Tester, debug
from tools import *
from assertions import *
from ccmlib.cluster import Cluster
from ccmlib.node import TimeoutError
import random
import time
import os
from distutils.version import LooseVersion
from tools import ThriftConnection
versions = (
'git:cassandra-1.1', 'git:cassandra-1.2', 'git:cassandra-2.0', 'git:trunk'
)
def get_version_from_build():
cassandra_dir = os.environ["CASSANDRA_DIR"]
build = os.path.join(cassandra_dir, 'build.xml')
with open(build) as f:
for line in f:
match = re.search('name="base\.version" value="([0-9.]+)[^"]*"', line)
if match:
return 'git:cassandra-' + match.group(1)
try:
current_version = get_version_from_build()
except KeyError:
current_version = versions[-1]
class TestUpgradeThroughVersions(Tester):
"""
Upgrades a 3-node cluster through each of the above versions.
If the CASSANDRA_DIR variable is set then upgrade to that version,
otherwise upgrade all the way to the trunk.
"""
def __init__(self, *args, **kwargs):
# Forcing cluster version on purpose
os.environ['CASSANDRA_VERSION'] = versions[0]
# Force cluster options that are common among versions:
kwargs['cluster_options'] = {'partitioner':'org.apache.cassandra.dht.RandomPartitioner'}
Tester.__init__(self, *args, **kwargs)
def upgrade_test(self):
self.upgrade_scenario()
def upgrade_test_mixed(self):
"""Only upgrade part of the cluster, so we have mixed versions part way through."""
self.upgrade_scenario(mixed_version=True)
def upgrade_scenario(self, mixed_version=False):
self.num_rows = 2000
self.counter_val = 0
cluster = self.cluster
# Create a ring
debug('Creating cluster (%s)' % versions[0])
cluster.populate(3)
cluster.start()
node1, node2, node3 = cluster.nodelist()
self.node2 = node2
node1.watch_log_for('Listening for thrift clients...')
conn = ThriftConnection(node1)
conn.create_ks()
conn.create_cf()
self._create_counter_cf()
time.sleep(.5)
self._write_values()
self._increment_counter_value()
test_versions = [v for v in versions if v <= current_version ]
debug( str(test_versions) )
# upgrade through versions
for version in test_versions[1:]:
if mixed_version:
self.upgrade_to_version(version, mixed_version=True, nodes=(node1,))
self.upgrade_to_version(version, mixed_version=True, nodes=(node2,node3))
node1.nodetool('upgradesstables')
node2.nodetool('upgradesstables')
node3.nodetool('upgradesstables')
else:
self.upgrade_to_version(version)
cluster.stop()
def upgrade_to_version(self, version, mixed_version=False, nodes=None):
"""Upgrade Nodes - if *mixed_version* is True, only upgrade those nodes
that are specified by *nodes*, otherwise ignore *nodes* specified
and upgrade all nodes.
"""
debug('Upgrading to ' + version)
if not mixed_version:
nodes = self.cluster.nodelist()
for node in nodes:
debug('Prepping node for shutdown: ' + node.name)
node.flush()
self._check_values()
self._check_counter_values()
for node in nodes:
debug('Shutting down node: ' + node.name)
time.sleep(.5)
node.stop(wait_other_notice=False)
if ENABLE_VNODES and version >= "1.2":
self.cluster.set_configuration_options(values={'initial_token': None, 'num_tokens': 256})
for node in nodes:
debug('Upgrading node: ' + node.name)
node.set_cassandra_dir(cassandra_version=version)
node.start(wait_other_notice=True)
time.sleep(.5)
if not mixed_version:
node.nodetool('upgradesstables')
if ENABLE_VNODES and version >= "1.2" and not mixed_version:
debug("Running shuffle")
self.node2.shuffle("create")
self.node2.shuffle("en")
for node in nodes:
debug('Checking node: ' + node.name)
if not mixed_version:
self._write_values()
self._check_values()
self._increment_counter_value()
time.sleep(0.5)
self._check_counter_values()
if not mixed_version:
# Check we can bootstrap a new node on the upgraded cluster:
debug("Adding a node to the cluster")
self.cluster.set_cassandra_dir(cassandra_version=version)
nnode = new_node(self.cluster, remote_debug_port=str(2000+len(self.cluster.nodes)))
nnode.start(no_wait=False)
nnode.watch_log_for("Bootstrap completed!")
debug("node should be up, but sleeping a bit to ensure...")
time.sleep(15)
self._check_values()
self._check_counter_values()
if mixed_version:
debug('Successfully upgraded part of the cluster to %s' % version)
else:
debug('Successfully upgraded to %s' % version)
def _write_values(self, consistency_level='ALL'):
self.num_rows += 2
conn = ThriftConnection(self.node2).use_ks()
conn.insert_columns(self.num_rows, consistency_level)
def _check_values(self, consistency_level='ALL'):
for node in self.cluster.nodelist():
conn = ThriftConnection(node).use_ks()
conn.query_columns(self.num_rows, consistency_level)
def _create_counter_cf(self):
cursor = self.cql_connection(self.node2).cursor()
cursor.execute("use ks;")
create_counter_table_query = ("CREATE TABLE countertable ( "
"k text PRIMARY KEY, "
"c counter) WITH "
"default_validation=CounterColumnType;")
cursor.execute( create_counter_table_query )
def _increment_counter_value(self):
debug("incrementing counter...")
cursor = self.cql_connection(self.node2).cursor()
cursor.execute("use ks;")
update_counter_query = ("UPDATE countertable SET c = c + 1 WHERE k='www.datastax.com'")
cursor.execute( update_counter_query )
self.counter_val += 1
debug("OK...")
def _check_counter_values(self):
debug("Checking counter values...")
cursor = self.cql_connection(self.node2).cursor()
cursor.execute("use ks;")
cursor.execute("SELECT c from countertable;")
res = cursor.fetchall()[0][0]
assert res == self.counter_val, "Counter not at expected value."
debug("OK...")