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91 lines
4.1 KiB
Python
91 lines
4.1 KiB
Python
#
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# Copyright (C) 2025-present ScyllaDB
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#
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# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.1
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#
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import asyncio
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import pytest
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from test.cluster.util import new_test_keyspace, new_test_table
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from test.pylib.manager_client import ManagerClient, safe_driver_shutdown
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from test.pylib.util import wait_for
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from cassandra.connection import UnixSocketEndPoint
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from cassandra.policies import WhiteListRoundRobinPolicy
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from test.cluster.conftest import cluster_con
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from time import time
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import os
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# The following test verifies that Scylla avoids making an oversized allocation
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# when generating a large create statement when performing a DESCRIBE statement.
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# The threshold for generating a warning about an oversized allocation is set
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# to 128 * 2^10 bytes.
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#
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# Reproducer for issue scylladb/scylladb#24018.
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async def test_large_create_statement(manager: ManagerClient):
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cmdline = ["--logger-log-level", "describe=trace"]
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srv = await manager.server_add(cmdline=cmdline)
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cql = manager.get_cql()
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async with new_test_keyspace(manager, "WITH replication = {'class': 'NetworkTopologyStrategy', 'replication_factor': 1}") as ks:
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async with new_test_table(manager, ks, "p int PRIMARY KEY") as table:
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# CQL will not accept identifiers longers than ~2^16.
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col_name_len = 60_000
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# An oversized allocation warning is issued for allocations bigger than 128 * 2^10.
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target_size_threshold = 128 * (2 ** 10)
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async def add_and_drop(col_name: str) -> None:
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await cql.run_async(f"ALTER TABLE {table} ADD {col_name} int")
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await cql.run_async(f"ALTER TABLE {table} DROP {col_name}")
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# Let's get ourselves a little bit more room with the size just
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# to make sure an oversized allocation will be triggered.
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col_count = 2 * (target_size_threshold // col_name_len) + 1
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col_name_prefix = "a" * col_name_len
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await asyncio.gather(*[add_and_drop(f"{col_name_prefix}{idx}") for idx in range(col_count)])
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log = await manager.server_open_log(srv.server_id)
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marker = await log.mark()
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await cql.run_async("DESCRIBE SCHEMA WITH INTERNALS")
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matches = await log.grep("oversized allocation", from_mark=marker)
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assert len(matches) == 0
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@pytest.mark.parametrize("mode", ["normal", "maintenance"])
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async def test_describe_cluster_sanity(manager: ManagerClient, mode: str):
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"""
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Parametrized test that DESCRIBE CLUSTER returns correct cluster information
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in both normal and maintenance modes.
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This test verifies that cluster metadata from gossiper is properly initialized
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and the cluster name is consistent with system.local in both:
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- normal mode: standard cluster operation
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- maintenance mode: node isolated from the cluster
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"""
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if mode == "normal":
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await manager.server_add()
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cql = manager.get_cql()
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else: # maintenance mode
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srv = await manager.server_add(config={"maintenance_mode": True}, connect_driver=False)
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maintenance_socket_path = await manager.server_get_maintenance_socket_path(srv.server_id)
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async def socket_exists():
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return True if os.path.exists(maintenance_socket_path) else None
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await wait_for(socket_exists, time() + 30)
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socket_endpoint = UnixSocketEndPoint(maintenance_socket_path)
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cluster = cluster_con([socket_endpoint], load_balancing_policy=WhiteListRoundRobinPolicy([socket_endpoint]))
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cql = cluster.connect()
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try:
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system_local_results = await cql.run_async("SELECT cluster_name FROM system.local")
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assert system_local_results[0].cluster_name != "" # sanity check
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describe_results = await cql.run_async("DESCRIBE CLUSTER")
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assert describe_results[0].partitioner == 'org.apache.cassandra.dht.Murmur3Partitioner'
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assert describe_results[0].snitch == 'org.apache.cassandra.locator.SimpleSnitch'
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assert describe_results[0].cluster == system_local_results[0].cluster_name
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finally:
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if mode == "maintenance":
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safe_driver_shutdown(cluster)
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