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72 lines
2.3 KiB
Python
72 lines
2.3 KiB
Python
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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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node1 = cluster.add_instance("node1", main_configs=["configs/remote_servers.xml"])
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node2 = cluster.add_instance("node2", main_configs=["configs/remote_servers.xml"])
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node3 = cluster.add_instance("node3", main_configs=["configs/remote_servers.xml"])
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@pytest.fixture(scope="module")
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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 test_skip_unavailable_shards(start_cluster):
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expected = "node1\nnode2\nnode3\n"
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assert (
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node1.query(
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"SELECT hostName() as h FROM clusterAllReplicas('two_shards', system.one) order by h",
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settings={
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"allow_experimental_parallel_reading_from_replicas": 0,
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"skip_unavailable_shards": 1,
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},
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)
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== expected
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)
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assert (
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node1.query(
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"SELECT hostName() as h FROM clusterAllReplicas('two_shards', system.one) order by h",
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settings={
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"allow_experimental_parallel_reading_from_replicas": 2,
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"max_parallel_replicas": 3,
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"use_hedged_requests": 0,
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"skip_unavailable_shards": 1,
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# "async_socket_for_remote" : 0,
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# "async_query_sending_for_remote" : 0,
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# "connections_with_failover_max_tries": 0,
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},
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)
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== expected
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)
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def test_error_on_unavailable_shards(start_cluster):
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with pytest.raises(QueryRuntimeException):
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node1.query(
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"SELECT hostName() as h FROM clusterAllReplicas('two_shards', system.one) order by h",
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settings={
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"allow_experimental_parallel_reading_from_replicas": 0,
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"skip_unavailable_shards": 0,
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},
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)
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with pytest.raises(QueryRuntimeException):
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node1.query(
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"SELECT hostName() as h FROM clusterAllReplicas('two_shards', system.one) order by h",
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settings={
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"allow_experimental_parallel_reading_from_replicas": 2,
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"max_parallel_replicas": 3,
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"use_hedged_requests": 0,
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"skip_unavailable_shards": 0,
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},
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)
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