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180 lines
7.3 KiB
Python
180 lines
7.3 KiB
Python
import time
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.test_tools import assert_eq_with_retry, TSV
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cluster = ClickHouseCluster(__file__)
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node1 = cluster.add_instance('node1', main_configs=['configs/fast_background_pool.xml'], with_zookeeper=True)
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node2 = cluster.add_instance('node2', main_configs=['configs/fast_background_pool.xml'], with_zookeeper=True)
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@pytest.fixture(scope="module")
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def started_cluster():
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try:
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cluster.start()
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yield cluster
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finally:
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cluster.shutdown()
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def count_ttl_merges_in_queue(node, table):
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result = node.query(
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"SELECT count() FROM system.replication_queue WHERE merge_type = 'TTL_DELETE' and table = '{}'".format(table))
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if not result:
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return 0
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return int(result.strip())
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def count_ttl_merges_in_background_pool(node, table, level):
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result = TSV(node.query(
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"SELECT * FROM system.merges WHERE merge_type = 'TTL_DELETE' and table = '{}'".format(table)))
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count = len(result)
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if count >= level:
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print("count_ttl_merges_in_background_pool: merges more than warn level:\n{}".format(result))
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return count
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def count_regular_merges_in_background_pool(node, table):
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result = node.query("SELECT count() FROM system.merges WHERE merge_type = 'REGULAR' and table = '{}'".format(table))
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if not result:
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return 0
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return int(result.strip())
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def count_running_mutations(node, table):
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result = node.query("SELECT count() FROM system.merges WHERE table = '{}' and is_mutation=1".format(table))
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if not result:
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return 0
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return int(result.strip())
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# This test was introduced to check concurrency for TTLs merges and mutations
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# but it revealed a bug when we assign different merges to the same part
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# on the borders of partitions.
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def test_no_ttl_merges_in_busy_pool(started_cluster):
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node1.query("DROP TABLE IF EXISTS test_ttl")
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node1.query(
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"CREATE TABLE test_ttl (d DateTime, key UInt64, data UInt64) ENGINE = MergeTree() ORDER BY tuple() PARTITION BY key TTL d + INTERVAL 1 MONTH SETTINGS merge_with_ttl_timeout = 0, number_of_free_entries_in_pool_to_execute_mutation = 0")
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node1.query("SYSTEM STOP TTL MERGES")
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for i in range(1, 7):
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node1.query(
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"INSERT INTO test_ttl SELECT now() - INTERVAL 1 MONTH + number - 1, {}, number FROM numbers(5)".format(i))
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node1.query("ALTER TABLE test_ttl UPDATE data = data + 1 WHERE sleepEachRow(1) = 0")
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while count_running_mutations(node1, "test_ttl") < 6:
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print("Mutations count", count_running_mutations(node1, "test_ttl"))
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assert count_ttl_merges_in_background_pool(node1, "test_ttl", 1) == 0
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time.sleep(0.5)
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node1.query("SYSTEM START TTL MERGES")
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rows_count = []
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while count_running_mutations(node1, "test_ttl") == 6:
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print("Mutations count after start TTL", count_running_mutations(node1, "test_ttl"))
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rows_count.append(int(node1.query("SELECT count() FROM test_ttl").strip()))
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time.sleep(0.5)
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# at least several seconds we didn't run any TTL merges and rows count equal
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# to the original value
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assert sum([1 for count in rows_count if count == 30]) > 4
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assert_eq_with_retry(node1, "SELECT COUNT() FROM test_ttl", "0")
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def test_limited_ttl_merges_in_empty_pool(started_cluster):
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node1.query("DROP TABLE IF EXISTS test_ttl_v2")
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node1.query(
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"CREATE TABLE test_ttl_v2 (d DateTime, key UInt64, data UInt64) ENGINE = MergeTree() ORDER BY tuple() PARTITION BY key TTL d + INTERVAL 1 MONTH SETTINGS merge_with_ttl_timeout = 0")
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node1.query("SYSTEM STOP TTL MERGES")
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for i in range(100):
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node1.query("INSERT INTO test_ttl_v2 SELECT now() - INTERVAL 1 MONTH, {}, number FROM numbers(1)".format(i))
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assert node1.query("SELECT COUNT() FROM test_ttl_v2") == "100\n"
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node1.query("SYSTEM START TTL MERGES")
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merges_with_ttl_count = set({})
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while True:
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merges_with_ttl_count.add(count_ttl_merges_in_background_pool(node1, "test_ttl_v2", 3))
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time.sleep(0.01)
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if node1.query("SELECT COUNT() FROM test_ttl_v2") == "0\n":
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break
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assert max(merges_with_ttl_count) <= 2
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def test_limited_ttl_merges_in_empty_pool_replicated(started_cluster):
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node1.query("DROP TABLE IF EXISTS replicated_ttl")
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node1.query(
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"CREATE TABLE replicated_ttl (d DateTime, key UInt64, data UInt64) ENGINE = ReplicatedMergeTree('/test/t', '1') ORDER BY tuple() PARTITION BY key TTL d + INTERVAL 1 MONTH SETTINGS merge_with_ttl_timeout = 0")
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node1.query("SYSTEM STOP TTL MERGES")
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for i in range(100):
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node1.query_with_retry("INSERT INTO replicated_ttl SELECT now() - INTERVAL 1 MONTH, {}, number FROM numbers(1)".format(i))
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assert node1.query("SELECT COUNT() FROM replicated_ttl") == "100\n"
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node1.query("SYSTEM START TTL MERGES")
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merges_with_ttl_count = set({})
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entries_with_ttl_count = set({})
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while True:
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merges_with_ttl_count.add(count_ttl_merges_in_background_pool(node1, "replicated_ttl", 3))
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entries_with_ttl_count.add(count_ttl_merges_in_queue(node1, "replicated_ttl"))
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time.sleep(0.01)
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if node1.query("SELECT COUNT() FROM replicated_ttl") == "0\n":
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break
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assert max(merges_with_ttl_count) <= 2
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assert max(entries_with_ttl_count) <= 1
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def test_limited_ttl_merges_two_replicas(started_cluster):
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# Actually this test quite fast and often we cannot catch any merges.
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# To check for sure just add some sleeps in mergePartsToTemporaryPart
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node1.query("DROP TABLE IF EXISTS replicated_ttl_2")
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node2.query("DROP TABLE IF EXISTS replicated_ttl_2")
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node1.query(
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"CREATE TABLE replicated_ttl_2 (d DateTime, key UInt64, data UInt64) ENGINE = ReplicatedMergeTree('/test/t2', '1') ORDER BY tuple() PARTITION BY key TTL d + INTERVAL 1 MONTH SETTINGS merge_with_ttl_timeout = 0")
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node2.query(
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"CREATE TABLE replicated_ttl_2 (d DateTime, key UInt64, data UInt64) ENGINE = ReplicatedMergeTree('/test/t2', '2') ORDER BY tuple() PARTITION BY key TTL d + INTERVAL 1 MONTH SETTINGS merge_with_ttl_timeout = 0")
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node1.query("SYSTEM STOP TTL MERGES")
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node2.query("SYSTEM STOP TTL MERGES")
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for i in range(100):
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node1.query_with_retry(
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"INSERT INTO replicated_ttl_2 SELECT now() - INTERVAL 1 MONTH, {}, number FROM numbers(10000)".format(i))
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node2.query("SYSTEM SYNC REPLICA replicated_ttl_2", timeout=10)
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assert node1.query("SELECT COUNT() FROM replicated_ttl_2") == "1000000\n"
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assert node2.query("SELECT COUNT() FROM replicated_ttl_2") == "1000000\n"
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node1.query("SYSTEM START TTL MERGES")
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node2.query("SYSTEM START TTL MERGES")
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merges_with_ttl_count_node1 = set({})
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merges_with_ttl_count_node2 = set({})
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while True:
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merges_with_ttl_count_node1.add(count_ttl_merges_in_background_pool(node1, "replicated_ttl_2", 3))
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merges_with_ttl_count_node2.add(count_ttl_merges_in_background_pool(node2, "replicated_ttl_2", 3))
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if node1.query("SELECT COUNT() FROM replicated_ttl_2") == "0\n" and node2.query(
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"SELECT COUNT() FROM replicated_ttl_2") == "0\n":
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break
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# Both replicas can assign merges with TTL. If one will perform better than
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# the other slow replica may have several merges in queue, so we don't
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# check them
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assert max(merges_with_ttl_count_node1) <= 2
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assert max(merges_with_ttl_count_node2) <= 2
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