added test for vertical merge in MultiversionMergeTree [#CLICKHOUSE-3479]

dbms/tests/integration/test_multiversion_merge_tree_vertical_merge/configs/mergetree_settings.xml

@@ -0,0 +1,7 @@
+<yandex>
+     <merge_tree>
+                <enable_vertical_merge_algorithm>1</enable_vertical_merge_algorithm>
+                <vertical_merge_algorithm_min_rows_to_activate>1</vertical_merge_algorithm_min_rows_to_activate>
+                <vertical_merge_algorithm_min_columns_to_activate>0</vertical_merge_algorithm_min_columns_to_activate>
+     </merge_tree>
+</yandex>

dbms/tests/integration/test_multiversion_merge_tree_vertical_merge/test.py

@@ -0,0 +1,125 @@
+import pytest
+
+from helpers.cluster import ClickHouseCluster
+
+
+cluster = ClickHouseCluster(__file__)
+
+instance = cluster.add_instance('node', main_configs=['configs/mergetree_settings.xml'])
+
+
+
+@pytest.fixture(scope="module")
+def started_cluster():
+    try:
+        cluster.start()
+
+        yield cluster
+
+    finally:
+        cluster.shutdown()
+
+
+def test(started_cluster):
+
+    instance.query('create database if not exists test;')
+
+    instance.query('''
+    drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, date, 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+    ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '0\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '2\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+        ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '20\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '20\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, -1, 1) from system.numbers limit 10;
+            ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '0\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '2\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 1, if(number % 2, -1, 1) from system.numbers limit 10;
+                ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '20\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '20\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, -1, 1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, -1, 1) from system.numbers limit 10;
+                    ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '0\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '2\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, -1, 1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 1, if(number % 3 = 0, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 1, if(number % 3 = 1, 1, -1) from system.numbers limit 10;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 1, if(number % 3 = 2, 1, -1) from system.numbers limit 10;
+                        ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '10\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '10\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value String, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date, value), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, 1, -1) from system.numbers limit 1000000;
+insert into test.mult_tab select '2018-01-31', 'str_' || toString(number), 0, if(number % 2, -1, 1) from system.numbers limit 1000000;
+                            ''')
+
+    assert instance.query("select count() from test.mult_tab final;") == '0\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '2\n'
+
+
+    instance.query('''
+drop table if exists test.mult_tab;
+create table test.mult_tab (date Date, value UInt64, version UInt64, sign Int8) engine = MultiversionMergeTree(date, (date), 8192, sign, version);
+insert into test.mult_tab select '2018-01-31', number, 0, if(number < 64, 1, -1) from system.numbers limit 128;
+insert into test.mult_tab select '2018-01-31', number, 0, if(number < 64, -1, 1) from system.numbers limit 128;
+                            ''')
+
+    assert instance.query("select count() from test.mult_tab final settings max_block_size=32;") == '128\n'
+    instance.query('optimize table test.mult_tab;')
+    assert instance.query("select count() from test.mult_tab;") == '2\n'