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sstable_generation_loading_test.py
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sstable_generation_loading_test.py
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from distutils import dir_util
import os
import subprocess
import time
from dtest import Tester, debug
from ccmlib import common as ccmcommon
class TestSSTableGenerationAndLoading(Tester):
def __init__(self, *argv, **kwargs):
kwargs['cluster_options'] = {'start_rpc': 'true'}
super(TestSSTableGenerationAndLoading, self).__init__(*argv, **kwargs)
self.allow_log_errors = True
def incompressible_data_in_compressed_table_test(self):
"""
tests for the bug that caused #3370:
https://issues.apache.org/jira/browse/CASSANDRA-3370
inserts random data into a compressed table. The compressed SSTable was
compared to the uncompressed and was found to indeed be larger then
uncompressed.
"""
cluster = self.cluster
cluster.populate(1).start()
node1 = cluster.nodelist()[0]
time.sleep(.5)
session = self.patient_cql_connection(node1)
self.create_ks(session, 'ks', 1)
self.create_cf(session, 'cf', compression="Deflate")
# make unique column names, and values that are incompressible
for col in xrange(10):
col_name = str(col)
col_val = os.urandom(5000)
col_val = col_val.encode('hex')
cql = "UPDATE cf SET v='%s' WHERE KEY='0' AND c='%s'" % (col_val, col_name)
# print cql
session.execute(cql)
node1.flush()
time.sleep(2)
rows = list(session.execute("SELECT * FROM cf WHERE KEY = '0' AND c < '8'"))
assert len(rows) > 0
def remove_index_file_test(self):
"""
tests for situations similar to that found in #343:
https://issues.apache.org/jira/browse/CASSANDRA-343
"""
cluster = self.cluster
cluster.populate(1).start(wait_for_binary_proto=True)
node1 = cluster.nodelist()[0]
# Makinge sure the cluster is ready to accept the subsequent
# stress connection. This was an issue on Windows.
node1.stress(['write', 'n=10000', '-rate', 'threads=8'])
node1.flush()
node1.compact()
node1.stop()
time.sleep(1)
path = ""
basepath = os.path.join(node1.get_path(), 'data', 'keyspace1')
for x in os.listdir(basepath):
if x.startswith("standard1"):
path = os.path.join(basepath, x)
os.system('rm %s/*Index.db' % path)
os.system('rm %s/*Filter.db' % path)
os.system('rm %s/*Statistics.db' % path)
os.system('rm %s/*Digest.sha1' % path)
node1.start()
time.sleep(10)
data_found = 0
for fname in os.listdir(path):
if fname.endswith('Data.db'):
data_found += 1
assert data_found > 0, "After removing index, filter, stats, and digest files, the data file was deleted!"
def sstableloader_compression_none_to_none_test(self):
self.load_sstable_with_configuration(None, None)
def sstableloader_compression_none_to_snappy_test(self):
self.load_sstable_with_configuration(None, 'Snappy')
def sstableloader_compression_none_to_deflate_test(self):
self.load_sstable_with_configuration(None, 'Deflate')
def sstableloader_compression_snappy_to_none_test(self):
self.load_sstable_with_configuration('Snappy', None)
def sstableloader_compression_snappy_to_snappy_test(self):
self.load_sstable_with_configuration('Snappy', 'Snappy')
def sstableloader_compression_snappy_to_deflate_test(self):
self.load_sstable_with_configuration('Snappy', 'Deflate')
def sstableloader_compression_deflate_to_none_test(self):
self.load_sstable_with_configuration('Deflate', None)
def sstableloader_compression_deflate_to_snappy_test(self):
self.load_sstable_with_configuration('Deflate', 'Snappy')
def sstableloader_compression_deflate_to_deflate_test(self):
self.load_sstable_with_configuration('Deflate', 'Deflate')
def load_sstable_with_configuration(self, pre_compression=None, post_compression=None):
"""
tests that the sstableloader works by using it to load data.
Compression of the columnfamilies being loaded, and loaded into
can be specified.
pre_compression and post_compression can be these values:
None, 'Snappy', or 'Deflate'.
"""
NUM_KEYS = 1000
for compression_option in (pre_compression, post_compression):
assert compression_option in (None, 'Snappy', 'Deflate')
debug("Testing sstableloader with pre_compression=%s and post_compression=%s" % (pre_compression, post_compression))
cluster = self.cluster
cluster.populate(2).start()
node1, node2 = cluster.nodelist()
time.sleep(.5)
def create_schema(session, compression):
self.create_ks(session, "ks", rf=2)
self.create_cf(session, "standard1", compression=compression)
self.create_cf(session, "counter1", compression=compression, columns={'v': 'counter'})
debug("creating keyspace and inserting")
session = self.cql_connection(node1)
create_schema(session, pre_compression)
for i in range(NUM_KEYS):
session.execute("UPDATE standard1 SET v='%d' WHERE KEY='%d' AND c='col'" % (i, i))
session.execute("UPDATE counter1 SET v=v+1 WHERE KEY='%d'" % i)
node1.nodetool('drain')
node1.stop()
node2.nodetool('drain')
node2.stop()
debug("Making a copy of the sstables")
# make a copy of the sstables
data_dir = os.path.join(node1.get_path(), 'data')
copy_root = os.path.join(node1.get_path(), 'data_copy')
for ddir in os.listdir(data_dir):
keyspace_dir = os.path.join(data_dir, ddir)
if os.path.isdir(keyspace_dir) and ddir != 'system':
copy_dir = os.path.join(copy_root, ddir)
dir_util.copy_tree(keyspace_dir, copy_dir)
debug("Wiping out the data and restarting cluster")
# wipe out the node data.
cluster.clear()
cluster.start()
time.sleep(5) # let gossip figure out what is going on
debug("re-creating the keyspace and column families.")
session = self.cql_connection(node1)
create_schema(session, post_compression)
time.sleep(2)
debug("Calling sstableloader")
# call sstableloader to re-load each cf.
cdir = node1.get_install_dir()
sstableloader = os.path.join(cdir, 'bin', ccmcommon.platform_binary('sstableloader'))
env = ccmcommon.make_cassandra_env(cdir, node1.get_path())
host = node1.address()
sstablecopy_dir = copy_root + '/ks'
for cf_dir in os.listdir(sstablecopy_dir):
full_cf_dir = os.path.join(sstablecopy_dir, cf_dir)
if os.path.isdir(full_cf_dir):
cmd_args = [sstableloader, '--nodes', host, full_cf_dir]
p = subprocess.Popen(cmd_args, env=env)
exit_status = p.wait()
self.assertEqual(0, exit_status,
"sstableloader exited with a non-zero status: %d" % exit_status)
def read_and_validate_data(session):
for i in range(NUM_KEYS):
rows = list(session.execute("SELECT * FROM standard1 WHERE KEY='%d'" % i))
self.assertEquals([str(i), 'col', str(i)], list(rows[0]))
rows = list(session.execute("SELECT * FROM counter1 WHERE KEY='%d'" % i))
self.assertEquals([str(i), 1], list(rows[0]))
debug("Reading data back")
# Now we should have sstables with the loaded data, and the existing
# data. Lets read it all to make sure it is all there.
read_and_validate_data(session)
debug("scrubbing, compacting, and repairing")
# do some operations and try reading the data again.
node1.nodetool('scrub')
node1.nodetool('compact')
node1.nodetool('repair')
debug("Reading data back one more time")
read_and_validate_data(session)