ClickHouse/dbms/tests/integration/test_dictionaries/test.py

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import pytest
import os
import time
from helpers.cluster import ClickHouseCluster
from helpers.test_tools import TSV, assert_eq_with_retry
from generate_dictionaries import generate_structure, generate_dictionaries, DictionaryTestTable
SCRIPT_DIR = os.path.dirname(os.path.realpath(__file__))
cluster = None
instance = None
test_table = None
def get_status(dictionary_name):
return instance.query("SELECT status FROM system.dictionaries WHERE name='" + dictionary_name + "'").rstrip("\n")
def get_loading_start_time(dictionary_name):
s = instance.query("SELECT loading_start_time FROM system.dictionaries WHERE name='" + dictionary_name + "'").rstrip("\n")
if s == "0000-00-00 00:00:00":
return None
return time.strptime(s, "%Y-%m-%d %H:%M:%S")
def get_loading_duration(dictionary_name):
return float(instance.query("SELECT loading_duration FROM system.dictionaries WHERE name='" + dictionary_name + "'"))
def replace_in_file_in_container(file_name, what, replace_with):
instance.exec_in_container('sed -i "s/' + what + '/' + replace_with + '/g" ' + file_name)
def setup_module(module):
global cluster
global instance
global test_table
structure = generate_structure()
dictionary_files = generate_dictionaries(os.path.join(SCRIPT_DIR, 'configs/dictionaries'), structure)
cluster = ClickHouseCluster(__file__, base_configs_dir=os.path.join(SCRIPT_DIR, 'configs'))
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instance = cluster.add_instance('instance', main_configs=dictionary_files)
test_table = DictionaryTestTable(os.path.join(SCRIPT_DIR, 'configs/dictionaries/source.tsv'))
@pytest.fixture(scope="module")
def started_cluster():
try:
cluster.start()
instance.query("CREATE DATABASE IF NOT EXISTS dict ENGINE=Dictionary")
test_table.create_clickhouse_source(instance)
for line in TSV(instance.query('select name from system.dictionaries')).lines:
print line,
# Create table `test.small_dict_source`
instance.query('''
drop table if exists test.small_dict_source;
create table test.small_dict_source (id UInt64, a String, b Int32, c Float64) engine=Log;
insert into test.small_dict_source values (0, 'water', 10, 1), (1, 'air', 40, 0.01), (2, 'earth', 100, 1.7);
''')
yield cluster
finally:
cluster.shutdown()
@pytest.fixture(params=[
# name, keys, use_parent
('clickhouse_hashed', ('id',), True),
('clickhouse_flat', ('id',), True),
('clickhouse_complex_integers_key_hashed', ('key0', 'key1'), False),
('clickhouse_complex_mixed_key_hashed', ('key0_str', 'key1'), False),
('clickhouse_range_hashed', ('id', 'StartDate', 'EndDate'), False),
],
ids=['clickhouse_hashed', 'clickhouse_flat',
'clickhouse_complex_integers_key_hashed',
'clickhouse_complex_mixed_key_hashed',
'clickhouse_range_hashed']
)
def dictionary_structure(started_cluster, request):
return request.param
def test_select_all(dictionary_structure):
name, keys, use_parent = dictionary_structure
query = instance.query
structure = test_table.get_structure_for_keys(keys, use_parent)
query('''
DROP TABLE IF EXISTS test.{0}
'''.format(name))
create_query = "CREATE TABLE test.{0} ({1}) engine = Dictionary({0})".format(name, structure)
TSV(query(create_query))
result = TSV(query('select * from test.{0}'.format(name)))
diff = test_table.compare_by_keys(keys, result.lines, use_parent, add_not_found_rows=True)
print test_table.process_diff(diff)
assert not diff
@pytest.fixture(params=[
# name, keys, use_parent
('clickhouse_cache', ('id',), True),
('clickhouse_complex_integers_key_cache', ('key0', 'key1'), False),
('clickhouse_complex_mixed_key_cache', ('key0_str', 'key1'), False)
],
ids=['clickhouse_cache', 'clickhouse_complex_integers_key_cache', 'clickhouse_complex_mixed_key_cache']
)
def cached_dictionary_structure(started_cluster, request):
return request.param
def test_select_all_from_cached(cached_dictionary_structure):
name, keys, use_parent = cached_dictionary_structure
query = instance.query
structure = test_table.get_structure_for_keys(keys, use_parent)
query('''
DROP TABLE IF EXISTS test.{0}
'''.format(name))
create_query = "CREATE TABLE test.{0} ({1}) engine = Dictionary({0})".format(name, structure)
TSV(query(create_query))
for i in range(4):
result = TSV(query('select * from test.{0}'.format(name)))
diff = test_table.compare_by_keys(keys, result.lines, use_parent, add_not_found_rows=False)
print test_table.process_diff(diff)
assert not diff
key = []
for key_name in keys:
if key_name.endswith('str'):
key.append("'" + str(i) + "'")
else:
key.append(str(i))
if len(key) == 1:
key = 'toUInt64(' + str(i) + ')'
else:
key = str('(' + ','.join(key) + ')')
query("select dictGetUInt8('{0}', 'UInt8_', {1})".format(name, key))
result = TSV(query('select * from test.{0}'.format(name)))
diff = test_table.compare_by_keys(keys, result.lines, use_parent, add_not_found_rows=True)
print test_table.process_diff(diff)
assert not diff
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def test_null_value(started_cluster):
query = instance.query
assert TSV(query("select dictGetUInt8('clickhouse_cache', 'UInt8_', toUInt64(12121212))")) == TSV("1")
assert TSV(query("select dictGetString('clickhouse_cache', 'String_', toUInt64(12121212))")) == TSV("implicit-default")
assert TSV(query("select dictGetDate('clickhouse_cache', 'Date_', toUInt64(12121212))")) == TSV("2015-11-25")
# Check, that empty null_value interprets as default value
assert TSV(query("select dictGetUInt64('clickhouse_cache', 'UInt64_', toUInt64(12121212))")) == TSV("0")
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assert TSV(query("select dictGetDateTime('clickhouse_cache', 'DateTime_', toUInt64(12121212))")) == TSV("0000-00-00 00:00:00")
def test_dictionary_dependency(started_cluster):
query = instance.query
# dictionaries_lazy_load == false, so these dictionary are not loaded.
assert get_status('dep_x') == 'NOT_LOADED'
assert get_status('dep_y') == 'NOT_LOADED'
assert get_status('dep_z') == 'NOT_LOADED'
# Dictionary 'dep_x' depends on 'dep_z', which depends on 'dep_y'.
# So they all should be loaded at once.
assert query("SELECT dictGetString('dep_x', 'a', toUInt64(1))") == "air\n"
assert get_status('dep_x') == 'LOADED'
assert get_status('dep_y') == 'LOADED'
assert get_status('dep_z') == 'LOADED'
# Other dictionaries should work too.
assert query("SELECT dictGetString('dep_y', 'a', toUInt64(1))") == "air\n"
assert query("SELECT dictGetString('dep_z', 'a', toUInt64(1))") == "air\n"
assert query("SELECT dictGetString('dep_x', 'a', toUInt64(3))") == "XX\n"
assert query("SELECT dictGetString('dep_y', 'a', toUInt64(3))") == "YY\n"
assert query("SELECT dictGetString('dep_z', 'a', toUInt64(3))") == "ZZ\n"
# Update the source table.
query("insert into test.small_dict_source values (3, 'fire', 30, 8)")
# Wait for dictionaries to be reloaded.
assert_eq_with_retry(instance, "SELECT dictHas('dep_y', toUInt64(3))", "1", sleep_time = 2, retry_count = 10)
assert query("SELECT dictGetString('dep_x', 'a', toUInt64(3))") == "XX\n"
assert query("SELECT dictGetString('dep_y', 'a', toUInt64(3))") == "fire\n"
assert query("SELECT dictGetString('dep_z', 'a', toUInt64(3))") == "ZZ\n"
# dep_x and dep_z are updated only when there `intDiv(count(), 4)` is changed.
query("insert into test.small_dict_source values (4, 'ether', 404, 0.001)")
assert_eq_with_retry(instance, "SELECT dictHas('dep_x', toUInt64(4))", "1", sleep_time = 2, retry_count = 10)
assert query("SELECT dictGetString('dep_x', 'a', toUInt64(3))") == "fire\n"
assert query("SELECT dictGetString('dep_y', 'a', toUInt64(3))") == "fire\n"
assert query("SELECT dictGetString('dep_z', 'a', toUInt64(3))") == "fire\n"
assert query("SELECT dictGetString('dep_x', 'a', toUInt64(4))") == "ether\n"
assert query("SELECT dictGetString('dep_y', 'a', toUInt64(4))") == "ether\n"
assert query("SELECT dictGetString('dep_z', 'a', toUInt64(4))") == "ether\n"
def test_reload_while_loading(started_cluster):
query = instance.query
# dictionaries_lazy_load == false, so this dictionary is not loaded.
assert get_status('longload') == "NOT_LOADED"
assert get_loading_duration('longload') == 0
# It's not possible to get a value from the dictionary within 1.0 second, so the following query fails by timeout.
assert query("SELECT dictGetInt32('longload', 'a', toUInt64(5))", timeout = 1, ignore_error = True) == ""
# The dictionary is now loading.
assert get_status('longload') == "LOADING"
start_time, duration = get_loading_start_time('longload'), get_loading_duration('longload')
assert duration > 0
time.sleep(0.5) # Still loading.
assert get_status('longload') == "LOADING"
prev_start_time, prev_duration = start_time, duration
start_time, duration = get_loading_start_time('longload'), get_loading_duration('longload')
assert start_time == prev_start_time
assert duration >= prev_duration
# SYSTEM RELOAD DICTIONARY should restart loading.
query("SYSTEM RELOAD DICTIONARY 'longload'")
assert get_status('longload') == "LOADING"
prev_start_time, prev_duration = start_time, duration
start_time, duration = get_loading_start_time('longload'), get_loading_duration('longload')
assert start_time > prev_start_time
assert duration < prev_duration
time.sleep(0.5) # Still loading.
assert get_status('longload') == "LOADING"
prev_start_time, prev_duration = start_time, duration
start_time, duration = get_loading_start_time('longload'), get_loading_duration('longload')
assert start_time == prev_start_time
assert duration >= prev_duration
# SYSTEM RELOAD DICTIONARIES should restart loading again.
query("SYSTEM RELOAD DICTIONARIES")
assert get_status('longload') == "LOADING"
prev_start_time, prev_duration = start_time, duration
start_time, duration = get_loading_start_time('longload'), get_loading_duration('longload')
assert start_time > prev_start_time
assert duration < prev_duration
# Changing the configuration file should restart loading one more time.
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_longload.xml', 'sleep 100', 'sleep 0')
time.sleep(5) # Configuration files are reloaded once in 5 seconds.
# This time loading should finish quickly.
assert get_status('longload') == "LOADED"
assert query("SELECT dictGetInt32('longload', 'a', toUInt64(5))") == "6\n"
def test_reload_after_loading(started_cluster):
query = instance.query
assert query("SELECT dictGetInt32('cmd', 'a', toUInt64(7))") == "8\n"
assert query("SELECT dictGetInt32('file', 'a', toUInt64(9))") == "10\n"
# Change the dictionaries' data.
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_cmd.xml', '8', '81')
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_file.txt', '10', '101')
# SYSTEM RELOAD 'name' reloads only the specified dictionary.
query("SYSTEM RELOAD DICTIONARY 'cmd'")
assert query("SELECT dictGetInt32('cmd', 'a', toUInt64(7))") == "81\n"
assert query("SELECT dictGetInt32('file', 'a', toUInt64(9))") == "10\n"
query("SYSTEM RELOAD DICTIONARY 'file'")
assert query("SELECT dictGetInt32('cmd', 'a', toUInt64(7))") == "81\n"
assert query("SELECT dictGetInt32('file', 'a', toUInt64(9))") == "101\n"
# SYSTEM RELOAD DICTIONARIES reloads all loaded dictionaries.
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_cmd.xml', '81', '82')
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_file.txt', '101', '102')
query("SYSTEM RELOAD DICTIONARIES")
assert query("SELECT dictGetInt32('cmd', 'a', toUInt64(7))") == "82\n"
assert query("SELECT dictGetInt32('file', 'a', toUInt64(9))") == "102\n"
# Configuration files are reloaded and lifetimes are checked automatically once in 5 seconds.
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_cmd.xml', '82', '83')
replace_in_file_in_container('/etc/clickhouse-server/config.d/dictionary_preset_file.txt', '102', '103')
time.sleep(5)
assert query("SELECT dictGetInt32('file', 'a', toUInt64(9))") == "103\n"
assert query("SELECT dictGetInt32('cmd', 'a', toUInt64(7))") == "83\n"
def test_reload_after_fail(started_cluster):
query = instance.query
# dictionaries_lazy_load == false, so this dictionary is not loaded.
assert get_status("no_file") == "NOT_LOADED"
# We expect an error because the file source doesn't exist.
expected_error = "No such file"
assert expected_error in instance.query_and_get_error("SELECT dictGetInt32('no_file', 'a', toUInt64(9))")
assert get_status("no_file") == "FAILED"
# SYSTEM RELOAD should not change anything now, the status is still FAILED.
query("SYSTEM RELOAD DICTIONARY 'no_file'")
assert expected_error in instance.query_and_get_error("SELECT dictGetInt32('no_file', 'a', toUInt64(9))")
assert get_status("no_file") == "FAILED"
# Creating the file source makes the dictionary able to load.
instance.copy_file_to_container(os.path.join(SCRIPT_DIR, "configs/dictionaries/dictionary_preset_file.txt"), "/etc/clickhouse-server/config.d/dictionary_preset_no_file.txt")
query("SYSTEM RELOAD DICTIONARY 'no_file'")
query("SELECT dictGetInt32('no_file', 'a', toUInt64(9))") == "10\n"
assert get_status("no_file") == "LOADED"
# Removing the file source should not spoil the loaded dictionary.
instance.exec_in_container("rm /etc/clickhouse-server/config.d/dictionary_preset_no_file.txt")
query("SYSTEM RELOAD DICTIONARY 'no_file'")
query("SELECT dictGetInt32('no_file', 'a', toUInt64(9))") == "10\n"
assert get_status("no_file") == "LOADED"