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It is possible for network PartitionManager to work incorrectly, because of how docker setting up forward to DOCKER-USER chain, it first removes forward and then adds it back (see [1] and [2]), however this introduce race for a short period of time, and this is enough for TCP to retransmit packets, and breaks network PartitionManager. [1]:b1e30e8328/libnetwork/iptables/iptables.go (L638)[2]:b1e30e8328/libnetwork/firewall_linux.go (L42)Here are some details from logs for [3]: 2022-04-27 03:01:00 [ 621 ] DEBUG : Executing query SELECT node FROM distributed_table ORDER BY node on node2 (cluster.py:2879, query_and_get_error) [3]: https://s3.amazonaws.com/clickhouse-test-reports/36295/314d553ab14d30df7508814513506ec09c7c7061/integration_tests__asan__actions__[2/3]/integration_run_parallel1_0.log This query fails, from the server logs: 2022.04.27 03:01:00.213101 [ 10 ] {19b1719f-8c39-4e3e-b782-aa4c933650f2} <Debug> executeQuery: (from 172.16.5.1:59008) SELECT node FROM distributed_table ORDER BY node ... 2022.04.27 03:01:03.578439 [ 223 ] {19b1719f-8c39-4e3e-b782-aa4c933650f2} <Debug> Connection (node1:9000): Sent data for 2 scalars, total 2 rows in 0.000284672 sec., 6993 rows/sec., 68.00 B (232.15 KiB/sec.), compressed 0.4594594594594595 times to 148.00 B (505.16 KiB/sec.) 2022.04.27 03:01:03.590637 [ 223 ] {19b1719f-8c39-4e3e-b782-aa4c933650f2} <Debug> MergingSortedTransform: Merge sorted 3 blocks, 2 rows in 3.371592744 sec., 0.5931914533744174 rows/sec., 94.61 B/sec 2022.04.27 03:01:03.601256 [ 10 ] {19b1719f-8c39-4e3e-b782-aa4c933650f2} <Information> executeQuery: Read 2 rows, 28.00 B in 3.387950542 sec., 0 rows/sec., 8.26 B/sec. 2022.04.27 03:01:03.601894 [ 10 ] {19b1719f-8c39-4e3e-b782-aa4c933650f2} <Debug> MemoryTracker: Peak memory usage (for query): 334.38 KiB. And from docker daemon log: time="2022-04-27T03:00:59.916693113Z" level=debug msg="form data: {\"AttachStderr\":true,\"AttachStdin\":false,\"AttachStdout\":true,\"Cmd\":[\"iptables\",\"--wait\",\"-I\",\"DOCKER-USER\",\"1\",\"-p\",\"tcp\",\"-s\",\"172.16.5.2\",\"-d\",\"172.16.5.3\",\"-j\",\"DROP\"],\"Container\":\"b75f3b68cda51386bfbb9cceb67e92c4d217a5a1660bde2470b583cb1f4c7fc4\",\"Privileged\":true,\"Tty\":false,\"User\":\"\"}" time="2022-04-27T03:01:00.030654116Z" level=debug msg="form data: {\"AttachStderr\":true,\"AttachStdin\":false,\"AttachStdout\":true,\"Cmd\":[\"iptables\",\"--wait\",\"-I\",\"DOCKER-USER\",\"1\",\"-p\",\"tcp\",\"-s\",\"172.16.5.3\",\"-d\",\"172.16.5.2\",\"-j\",\"DROP\"],\"Container\":\"b75f3b68cda51386bfbb9cceb67e92c4d217a5a1660bde2470b583cb1f4c7fc4\",\"Privileged\":true,\"Tty\":false,\"User\":\"\"}" ... time="2022-04-27T03:01:03.515813984Z" level=debug msg="/usr/sbin/iptables, [--wait -t filter -n -L DOCKER-USER]" time="2022-04-27T03:01:03.531106486Z" level=debug msg="/usr/sbin/iptables, [--wait -t filter -C DOCKER-USER -j RETURN]" time="2022-04-27T03:01:03.535442346Z" level=debug msg="/usr/sbin/iptables, [--wait -t filter -C FORWARD -j DOCKER-USER]" time="2022-04-27T03:01:03.555856911Z" level=debug msg="/usr/sbin/iptables, [--wait -D FORWARD -j DOCKER-USER]" time="2022-04-27T03:01:03.564905764Z" level=debug msg="/usr/sbin/iptables, [--wait -I FORWARD -j DOCKER-USER]" ... time="2022-04-27T03:01:03.706374466Z" level=debug msg="form data: {\"AttachStderr\":true,\"AttachStdin\":false,\"AttachStdout\":true,\"Cmd\":[\"iptables\",\"--wait\",\"-D\",\"DOCKER-USER\",\"-p\",\"tcp\",\"-s\",\"172.16.5.3\",\"-d\",\"172.16.5.2\",\"-j\",\"DROP\"],\"Container\":\"b75f3b68cda51386bfbb9cceb67e92c4d217a5a1660bde2470b583cb1f4c7fc4\",\"Privileged\":true,\"Tty\":false,\"User\":\"\"}" time="2022-04-27T03:01:03.968077970Z" level=debug msg="form data: {\"AttachStderr\":true,\"AttachStdin\":false,\"AttachStdout\":true,\"Cmd\":[\"iptables\",\"--wait\",\"-D\",\"DOCKER-USER\",\"-p\",\"tcp\",\"-s\",\"172.16.5.2\",\"-d\",\"172.16.5.3\",\"-j\",\"DROP\"],\"Container\":\"b75f3b68cda51386bfbb9cceb67e92c4d217a5a1660bde2470b583cb1f4c7fc4\",\"Privileged\":true,\"Tty\":false,\"User\":\"\"}" I've tried multiple ways of fixing this: - Creating separate chain for rules from PartitionManager (DOCKER-USER-CLICKHOUSE) But it is created only once, and docker places new rules on top of the FORWARD chain, so it will not work, since it will not receive any packets - Use DOCKER-USER, but replace iptables with a wrapper ([script]), that will ignore recreating of a rule for forward to DOCKER-USER, but this will not work too, since new docker rules will be created on top of FORWARD chain, and so DOCKER-USER will packets. [script]: if [[ "$*" =~ "-D FORWARD -j DOCKER-USER" ]]; then exit 0 fi if [[ "$*" =~ "-I FORWARD -j DOCKER-USER" ]]; then if iptables.real iptables -C FORWARD -j DOCKER-USER; then exit 0 fi fi - And the only way to avoid flakiness for this case, is to forbid parallel execution for tests with PartitionManager. Signed-off-by: Azat Khuzhin <a.khuzhin@semrush.com>
51 lines
3.2 KiB
JSON
51 lines
3.2 KiB
JSON
[
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"test_dns_cache/test.py::test_dns_cache_update",
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"test_dns_cache/test.py::test_ip_change_drop_dns_cache",
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"test_dns_cache/test.py::test_ip_change_update_dns_cache",
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"test_dns_cache/test.py::test_user_access_ip_change[node0]",
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"test_dns_cache/test.py::test_user_access_ip_change[node1]",
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"test_dns_cache/test.py::test_host_is_drop_from_cache_after_consecutive_failures",
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"test_atomic_drop_table/test.py::test_atomic_delete_with_stopped_zookeeper",
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"test_attach_without_fetching/test.py::test_attach_without_fetching",
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"test_cleanup_dir_after_bad_zk_conn/test.py::test_cleanup_dir_after_bad_zk_conn",
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"test_cleanup_dir_after_bad_zk_conn/test.py::test_attach_without_zk",
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"test_consistent_parts_after_clone_replica/test.py::test_inconsistent_parts_if_drop_while_replica_not_active",
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"test_cross_replication/test.py::test",
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"test_ddl_worker_non_leader/test.py::test_non_leader_replica",
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"test_delayed_replica_failover/test.py::test",
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"test_dictionary_allow_read_expired_keys/test_default_reading.py::test_default_reading",
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"test_dictionary_allow_read_expired_keys/test_dict_get.py::test_simple_dict_get",
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"test_dictionary_allow_read_expired_keys/test_dict_get_or_default.py::test_simple_dict_get_or_default",
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"test_disabled_mysql_server/test.py::test_disabled_mysql_server",
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"test_distributed_respect_user_timeouts/test.py::test_reconnect",
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"test_https_replication/test.py::test_replication_after_partition",
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"test_insert_into_distributed/test.py::test_reconnect",
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"test_insert_into_distributed/test.py::test_inserts_batching",
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"test_insert_into_distributed_through_materialized_view/test.py::test_reconnect",
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"test_insert_into_distributed_through_materialized_view/test.py::test_inserts_batching",
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"test_keeper_multinode_blocade_leader/test.py::test_blocade_leader",
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"test_keeper_multinode_blocade_leader/test.py::test_blocade_leader_twice",
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"test_keeper_multinode_simple/test.py::test_session_expiration",
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"test_keeper_two_nodes_cluster/test.py::test_read_write_two_nodes_with_blocade",
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"test_limited_replicated_fetches/test.py::test_limited_fetches",
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"test_materialized_mysql_database/test.py::test_network_partition_5_7",
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"test_materialized_mysql_database/test.py::test_network_partition_8_0",
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"test_mysql_database_engine/test.py::test_restart_server",
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"test_parts_delete_zookeeper/test.py::test_merge_doesnt_work_without_zookeeper",
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"test_quorum_inserts_parallel/test.py::test_parallel_quorum_actually_quorum",
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"test_random_inserts/test.py::test_random_inserts",
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"test_redirect_url_storage/test.py::test_url_reconnect",
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"test_replace_partition/test.py::test_drop_failover",
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"test_replace_partition/test.py::test_replace_after_replace_failover",
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"test_replicated_database/test.py::test_recover_staled_replica",
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"test_replicated_database/test.py::test_startup_without_zk",
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"test_replicated_database/test.py::test_sync_replica",
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"test_replicated_fetches_timeouts/test.py::test_no_stall",
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"test_storage_kafka/test.py::test_kafka_no_holes_when_write_suffix_failed",
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"test_storage_s3/test.py::test_url_reconnect_in_the_middle",
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"test_system_metrics/test.py::test_readonly_metrics",
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"test_system_replicated_fetches/test.py::test_system_replicated_fetches",
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"test_zookeeper_config_load_balancing/test.py::test_round_robin"
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]
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