mirror of
https://github.com/ClickHouse/ClickHouse.git
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326 lines
9.4 KiB
Python
326 lines
9.4 KiB
Python
# pylint: disable=unused-argument
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# pylint: disable=redefined-outer-name
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# pylint: disable=line-too-long
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# NOTES:
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# - timeout should not be reduced due to bit flip of the corrupted buffer
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import pytest
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from helpers.cluster import ClickHouseCluster
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from helpers.client import QueryRuntimeException
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cluster = ClickHouseCluster(__file__)
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# n1 -- distributed_directory_monitor_batch_inserts=1
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n1 = cluster.add_instance(
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"n1",
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main_configs=["configs/remote_servers.xml"],
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user_configs=["configs/users.d/batch.xml"],
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)
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# n2 -- distributed_directory_monitor_batch_inserts=0
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n2 = cluster.add_instance(
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"n2",
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main_configs=["configs/remote_servers.xml"],
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user_configs=["configs/users.d/no_batch.xml"],
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)
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# n3 -- distributed_directory_monitor_batch_inserts=1/distributed_directory_monitor_split_batch_on_failure=1
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n3 = cluster.add_instance(
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"n3",
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main_configs=["configs/remote_servers_split.xml"],
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user_configs=[
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"configs/users.d/batch.xml",
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"configs/users.d/split.xml",
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],
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)
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# n4 -- distributed_directory_monitor_batch_inserts=0/distributed_directory_monitor_split_batch_on_failure=1
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n4 = cluster.add_instance(
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"n4",
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main_configs=["configs/remote_servers_split.xml"],
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user_configs=[
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"configs/users.d/no_batch.xml",
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"configs/users.d/split.xml",
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],
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)
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batch_params = pytest.mark.parametrize(
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"batch",
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[
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(1),
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(0),
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],
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)
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batch_and_split_params = pytest.mark.parametrize(
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"batch,split",
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[
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(1, 0),
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(0, 0),
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(1, 1),
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(0, 1),
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],
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)
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@pytest.fixture(scope="module", autouse=True)
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def start_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 create_tables(remote_cluster_name):
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for _, instance in list(cluster.instances.items()):
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instance.query(
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"CREATE TABLE data (key Int, value String) Engine=MergeTree() ORDER BY key"
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)
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instance.query(
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f"""
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CREATE TABLE dist AS data
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Engine=Distributed(
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{remote_cluster_name},
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currentDatabase(),
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data,
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key
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)
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"""
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)
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# only via SYSTEM FLUSH DISTRIBUTED
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instance.query("SYSTEM STOP DISTRIBUTED SENDS dist")
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def drop_tables():
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for _, instance in list(cluster.instances.items()):
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instance.query("DROP TABLE IF EXISTS data")
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instance.query("DROP TABLE IF EXISTS dist")
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# return amount of bytes of the 2.bin for n2 shard
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def insert_data(node):
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node.query(
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"INSERT INTO dist SELECT number, randomPrintableASCII(100) FROM numbers(10000)",
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settings={
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# do not do direct INSERT, always via SYSTEM FLUSH DISTRIBUTED
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"prefer_localhost_replica": 0,
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},
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)
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path = get_path_to_dist_batch()
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size = int(node.exec_in_container(["bash", "-c", f"wc -c < {path}"]))
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assert size > 1 << 16
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return size
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def get_node(batch, split=None):
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if split:
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if batch:
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return n3
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return n4
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if batch:
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return n1
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return n2
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def bootstrap(batch, split=None):
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drop_tables()
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create_tables("insert_distributed_async_send_cluster_two_replicas")
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return insert_data(get_node(batch, split))
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def get_path_to_dist_batch(file="2.bin"):
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# There are:
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# - /var/lib/clickhouse/data/default/dist/shard1_replica1/1.bin
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# - /var/lib/clickhouse/data/default/dist/shard1_replica2/2.bin
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#
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# @return the file for the n2 shard
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return f"/var/lib/clickhouse/data/default/dist/shard1_replica2/{file}"
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def check_dist_after_corruption(truncate, batch, split=None):
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node = get_node(batch, split)
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if batch:
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# In batch mode errors are ignored
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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else:
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if truncate:
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with pytest.raises(
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QueryRuntimeException, match="Cannot read all data. Bytes read:"
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):
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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else:
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with pytest.raises(
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QueryRuntimeException,
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match="Checksum doesn't match: corrupted data. Reference:",
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):
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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# send pending files
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# (since we have two nodes and corrupt file for only one of them)
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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# but there is broken file
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broken = get_path_to_dist_batch("broken")
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node.exec_in_container(["bash", "-c", f"ls {broken}/2.bin"])
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if split:
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assert int(n3.query("SELECT count() FROM data")) == 10000
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assert int(n4.query("SELECT count() FROM data")) == 0
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else:
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assert int(n1.query("SELECT count() FROM data")) == 10000
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assert int(n2.query("SELECT count() FROM data")) == 0
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@batch_params
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def test_insert_distributed_async_send_success(batch):
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bootstrap(batch)
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node = get_node(batch)
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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assert int(n1.query("SELECT count() FROM data")) == 10000
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assert int(n2.query("SELECT count() FROM data")) == 10000
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@batch_and_split_params
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def test_insert_distributed_async_send_truncated_1(batch, split):
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size = bootstrap(batch, split)
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path = get_path_to_dist_batch()
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node = get_node(batch, split)
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new_size = size - 10
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# we cannot use truncate, due to hardlinks
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node.exec_in_container(
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["bash", "-c", f"mv {path} /tmp/bin && head -c {new_size} /tmp/bin > {path}"]
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)
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check_dist_after_corruption(True, batch, split)
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@batch_params
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def test_insert_distributed_async_send_truncated_2(batch):
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bootstrap(batch)
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path = get_path_to_dist_batch()
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node = get_node(batch)
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# we cannot use truncate, due to hardlinks
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node.exec_in_container(
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["bash", "-c", f"mv {path} /tmp/bin && head -c 10000 /tmp/bin > {path}"]
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)
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check_dist_after_corruption(True, batch)
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# The difference from the test_insert_distributed_async_send_corrupted_small
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# is that small corruption will be seen only on local node
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@batch_params
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def test_insert_distributed_async_send_corrupted_big(batch):
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size = bootstrap(batch)
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path = get_path_to_dist_batch()
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node = get_node(batch)
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from_original_size = size - 8192
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zeros_size = 8192
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node.exec_in_container(
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[
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"bash",
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"-c",
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f"mv {path} /tmp/bin && head -c {from_original_size} /tmp/bin > {path} && head -c {zeros_size} /dev/zero >> {path}",
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]
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)
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check_dist_after_corruption(False, batch)
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@batch_params
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def test_insert_distributed_async_send_corrupted_small(batch):
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size = bootstrap(batch)
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path = get_path_to_dist_batch()
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node = get_node(batch)
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from_original_size = size - 60
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zeros_size = 60
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node.exec_in_container(
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[
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"bash",
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"-c",
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f"mv {path} /tmp/bin && head -c {from_original_size} /tmp/bin > {path} && head -c {zeros_size} /dev/zero >> {path}",
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]
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)
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check_dist_after_corruption(False, batch)
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@batch_params
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def test_insert_distributed_async_send_different_header(batch):
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"""
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Check INSERT Into Distributed() with different headers in *.bin
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If batching will not distinguish headers underlying table will never receive the data.
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"""
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drop_tables()
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create_tables("insert_distributed_async_send_cluster_two_shards")
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node = get_node(batch)
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node.query(
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"INSERT INTO dist VALUES (0, 'f')",
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settings={
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"prefer_localhost_replica": 0,
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},
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)
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node.query("ALTER TABLE dist MODIFY COLUMN value UInt64")
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node.query(
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"INSERT INTO dist VALUES (2, 1)",
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settings={
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"prefer_localhost_replica": 0,
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},
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)
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n1.query(
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"ALTER TABLE data MODIFY COLUMN value UInt64",
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settings={
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"mutations_sync": 1,
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},
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)
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if batch:
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# but only one batch will be sent, and first is with UInt64 column, so
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# one rows inserted, and for string ('f') exception will be throw.
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with pytest.raises(
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QueryRuntimeException,
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match=r"DB::Exception: Cannot parse string 'f' as UInt64: syntax error at begin of string",
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):
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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assert int(n1.query("SELECT count() FROM data")) == 1
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# but once underlying column String, implicit conversion will do the
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# thing, and insert left batch.
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n1.query(
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"""
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DROP TABLE data SYNC;
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CREATE TABLE data (key Int, value String) Engine=MergeTree() ORDER BY key;
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"""
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)
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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assert int(n1.query("SELECT count() FROM data")) == 1
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else:
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# first send with String ('f'), so zero rows will be inserted
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with pytest.raises(
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QueryRuntimeException,
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match=r"DB::Exception: Cannot parse string 'f' as UInt64: syntax error at begin of string",
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):
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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assert int(n1.query("SELECT count() FROM data")) == 0
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# but once underlying column String, implicit conversion will do the
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# thing, and insert 2 rows (mixed UInt64 and String).
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n1.query(
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"""
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DROP TABLE data SYNC;
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CREATE TABLE data (key Int, value String) Engine=MergeTree() ORDER BY key;
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"""
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)
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node.query("SYSTEM FLUSH DISTRIBUTED dist")
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assert int(n1.query("SELECT count() FROM data")) == 2
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assert int(n2.query("SELECT count() FROM data")) == 0
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