mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-22 07:31:57 +00:00
Nikolay Degterinsky
parent
2bb5b79f02
commit
c1fba94d67
@ -1396,6 +1396,23 @@ For more information, see the section [Creating replicated tables](../../engines
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<macros incl="macros" optional="true" />
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```
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## replica_group_name {#replica_group_name}
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Replica group name for database Replicated.
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The cluster created by Replicated database will consist of replicas in the same group.
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DDL queries will only wail for the replicas in the same group.
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Empty by default.
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**Example**
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``` xml
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<replica_group_name>backups</replica_group_name>
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```
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Default value: ``.
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## max_open_files {#max-open-files}
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The maximum number of open files.
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@ -97,12 +97,12 @@ The fourth one is useful to remove metadata of dead replica when all other repli
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Dead replicas of `Replicated` databases can be dropped using following syntax:
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``` sql
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'] FROM DATABASE database;
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'];
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'] FROM ZKPATH '/path/to/table/in/zk';
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'] [FROM GROUP 'group_name'] FROM DATABASE database;
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'] [FROM GROUP 'group_name'];
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SYSTEM DROP DATABASE REPLICA 'replica_name' [FROM SHARD 'shard_name'] [FROM GROUP 'group_name'] FROM ZKPATH '/path/to/table/in/zk';
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```
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Similar to `SYSTEM DROP REPLICA`, but removes the `Replicated` database replica path from ZooKeeper when there's no database to run `DROP DATABASE`. Please note that it does not remove `ReplicatedMergeTree` replicas (so you may need `SYSTEM DROP REPLICA` as well). Shard and replica names are the names that were specified in `Replicated` engine arguments when creating the database. Also, these names can be obtained from `database_shard_name` and `database_replica_name` columns in `system.clusters`. If the `FROM SHARD` clause is missing, then `replica_name` must be a full replica name in `shard_name|replica_name` format.
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Similar to `SYSTEM DROP REPLICA`, but removes the `Replicated` database replica path from ZooKeeper when there's no database to run `DROP DATABASE`. Please note that it does not remove `ReplicatedMergeTree` replicas (so you may need `SYSTEM DROP REPLICA` as well). Shard and replica names are the names that were specified in `Replicated` engine arguments when creating the database. Also, these names can be obtained from `database_shard_name` and `database_replica_name` columns in `system.clusters`. Replica group name is the name defined by `replica_group_name` [setting](../../operations/server-configuration-parameters/settings.md#replica_group_name) in the server configuration. If the `FROM SHARD` clause is missing, then `replica_name` must be a full replica name in `shard_name|replica_name` format if replica groups are not used and in `shard_name|replica_name|group_name` otherwise.
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## DROP UNCOMPRESSED CACHE
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@ -926,6 +926,15 @@
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</macros>
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-->
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<!-- Replica group name for database Replicated.
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The cluster created by Replicated database will consist of replicas in the same group.
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DDL queries will only wail for the replicas in the same group.
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Empty by default.
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-->
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<!--
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<replica_group_name><replica_group_name>
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-->
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<!-- Reloading interval for embedded dictionaries, in seconds. Default: 3600. -->
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<builtin_dictionaries_reload_interval>3600</builtin_dictionaries_reload_interval>
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@ -116,28 +116,52 @@ DatabaseReplicated::DatabaseReplicated(
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if (!db_settings.collection_name.value.empty())
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fillClusterAuthInfo(db_settings.collection_name.value, context_->getConfigRef());
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replica_group_name = context_->getConfigRef().getString("replica_group_name", "");
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if (replica_group_name.find('/') != std::string::npos)
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Replica group name should not contain '/': {}", replica_group_name);
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if (replica_group_name.find('|') != std::string::npos)
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Replica group name should not contain '|': {}", replica_group_name);
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}
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String DatabaseReplicated::getFullReplicaName(const String & shard, const String & replica)
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String DatabaseReplicated::getFullReplicaName(const String & shard, const String & replica, const String & replica_group)
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{
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if (replica_group.empty())
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return shard + '|' + replica;
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else
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return shard + '|' + replica + '|' + replica_group;
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}
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String DatabaseReplicated::getFullReplicaName() const
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{
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return getFullReplicaName(shard_name, replica_name);
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return getFullReplicaName(shard_name, replica_name, replica_group_name);
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}
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std::pair<String, String> DatabaseReplicated::parseFullReplicaName(const String & name)
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DatabaseReplicated::NameParts DatabaseReplicated::parseFullReplicaName(const String & name)
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{
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String shard;
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String replica;
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auto pos = name.find('|');
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if (pos == std::string::npos || name.find('|', pos + 1) != std::string::npos)
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NameParts parts;
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auto pos_first = name.find('|');
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if (pos_first == std::string::npos)
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throw Exception(ErrorCodes::LOGICAL_ERROR, "Incorrect replica identifier: {}", name);
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shard = name.substr(0, pos);
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replica = name.substr(pos + 1);
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return {shard, replica};
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parts.shard = name.substr(0, pos_first);
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auto pos_second = name.find('|', pos_first + 1);
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if (pos_second == std::string::npos)
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{
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parts.replica = name.substr(pos_first + 1);
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return parts;
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}
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if (name.find('|', pos_second + 1) != std::string::npos)
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throw Exception(ErrorCodes::LOGICAL_ERROR, "Incorrect replica identifier: {}", name);
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parts.replica = name.substr(pos_first + 1, pos_second - pos_first - 1);
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parts.replica_group = name.substr(pos_second + 1);
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return parts;
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}
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ClusterPtr DatabaseReplicated::tryGetCluster() const
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@ -175,6 +199,7 @@ void DatabaseReplicated::setCluster(ClusterPtr && new_cluster)
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ClusterPtr DatabaseReplicated::getClusterImpl() const
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{
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Strings unfiltered_hosts;
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Strings hosts;
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Strings host_ids;
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@ -186,11 +211,18 @@ ClusterPtr DatabaseReplicated::getClusterImpl() const
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{
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host_ids.resize(0);
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Coordination::Stat stat;
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hosts = zookeeper->getChildren(zookeeper_path + "/replicas", &stat);
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if (hosts.empty())
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unfiltered_hosts = zookeeper->getChildren(zookeeper_path + "/replicas", &stat);
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if (unfiltered_hosts.empty())
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throw Exception(ErrorCodes::NO_ACTIVE_REPLICAS, "No replicas of database {} found. "
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"It's possible if the first replica is not fully created yet "
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"or if the last replica was just dropped or due to logical error", zookeeper_path);
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for (const auto & host : unfiltered_hosts)
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{
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if (replica_group_name == parseFullReplicaName(host).replica_group)
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hosts.push_back(host);
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}
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Int32 cversion = stat.cversion;
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::sort(hosts.begin(), hosts.end());
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@ -221,7 +253,7 @@ ClusterPtr DatabaseReplicated::getClusterImpl() const
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assert(!hosts.empty());
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assert(hosts.size() == host_ids.size());
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String current_shard = parseFullReplicaName(hosts.front()).first;
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String current_shard = parseFullReplicaName(hosts.front()).shard;
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std::vector<std::vector<DatabaseReplicaInfo>> shards;
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shards.emplace_back();
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for (size_t i = 0; i < hosts.size(); ++i)
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@ -229,17 +261,17 @@ ClusterPtr DatabaseReplicated::getClusterImpl() const
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const auto & id = host_ids[i];
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if (id == DROPPED_MARK)
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continue;
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auto [shard, replica] = parseFullReplicaName(hosts[i]);
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auto parts = parseFullReplicaName(hosts[i]);
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auto pos = id.rfind(':');
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String host_port = id.substr(0, pos);
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if (shard != current_shard)
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if (parts.shard != current_shard)
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{
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current_shard = shard;
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current_shard = parts.shard;
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if (!shards.back().empty())
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shards.emplace_back();
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}
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String hostname = unescapeForFileName(host_port);
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shards.back().push_back(DatabaseReplicaInfo{std::move(hostname), std::move(shard), std::move(replica)});
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shards.back().push_back(DatabaseReplicaInfo{std::move(hostname), std::move(parts.shard), std::move(parts.replica), std::move(parts.replica_group)});
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}
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UInt16 default_port = getContext()->getTCPPort();
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@ -269,7 +301,7 @@ std::vector<UInt8> DatabaseReplicated::tryGetAreReplicasActive(const ClusterPtr
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{
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for (const auto & replica : addresses_with_failover[shard_index])
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{
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String full_name = getFullReplicaName(replica.database_shard_name, replica.database_replica_name);
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String full_name = getFullReplicaName(replica.database_shard_name, replica.database_replica_name, replica.database_replica_name);
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paths.emplace_back(fs::path(zookeeper_path) / "replicas" / full_name / "active");
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}
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}
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@ -309,6 +341,7 @@ void DatabaseReplicated::fillClusterAuthInfo(String collection_name, const Poco:
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cluster_auth_info.cluster_secure_connection = config_ref.getBool(config_prefix + ".cluster_secure_connection", false);
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}
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void DatabaseReplicated::tryConnectToZooKeeperAndInitDatabase(LoadingStrictnessLevel mode)
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{
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try
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@ -464,8 +497,26 @@ void DatabaseReplicated::createReplicaNodesInZooKeeper(const zkutil::ZooKeeperPt
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for (int attempts = 10; attempts > 0; --attempts)
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{
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Coordination::Stat stat;
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String max_log_ptr_str = current_zookeeper->get(zookeeper_path + "/max_log_ptr", &stat);
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Coordination::Stat stat_max_log_ptr;
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Coordination::Stat stat_replicas;
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String max_log_ptr_str = current_zookeeper->get(zookeeper_path + "/max_log_ptr", &stat_max_log_ptr);
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Strings replicas = current_zookeeper->getChildren(zookeeper_path + "/replicas", &stat_replicas);
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for (const auto & replica : replicas)
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{
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NameParts parts = parseFullReplicaName(replica);
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if (parts.shard == shard_name && parts.replica == replica_name)
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{
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throw Exception(
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ErrorCodes::REPLICA_ALREADY_EXISTS,
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"Replica {} of shard {} of replicated database already exists in the replica group {} at {}",
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replica_name, shard_name, parts.replica_group, zookeeper_path);
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}
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}
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/// This way we make sure that other replica with the same replica_name and shard_name
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/// but with a different replica_group_name was not created at the same time.
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String replica_value = "Last added replica: " + getFullReplicaName();
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Coordination::Requests ops;
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ops.emplace_back(zkutil::makeCreateRequest(replica_path, host_id, zkutil::CreateMode::Persistent));
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ops.emplace_back(zkutil::makeCreateRequest(replica_path + "/log_ptr", "0", zkutil::CreateMode::Persistent));
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@ -473,7 +524,8 @@ void DatabaseReplicated::createReplicaNodesInZooKeeper(const zkutil::ZooKeeperPt
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/// In addition to creating the replica nodes, we record the max_log_ptr at the instant where
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/// we declared ourself as an existing replica. We'll need this during recoverLostReplica to
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/// notify other nodes that issued new queries while this node was recovering.
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ops.emplace_back(zkutil::makeCheckRequest(zookeeper_path + "/max_log_ptr", stat.version));
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ops.emplace_back(zkutil::makeCheckRequest(zookeeper_path + "/max_log_ptr", stat_max_log_ptr.version));
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ops.emplace_back(zkutil::makeSetRequest(zookeeper_path + "/replicas", replica_value, stat_replicas.version));
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Coordination::Responses responses;
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const auto code = current_zookeeper->tryMulti(ops, responses);
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if (code == Coordination::Error::ZOK)
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@ -704,7 +756,15 @@ BlockIO DatabaseReplicated::tryEnqueueReplicatedDDL(const ASTPtr & query, Contex
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entry.tracing_context = OpenTelemetry::CurrentContext();
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String node_path = ddl_worker->tryEnqueueAndExecuteEntry(entry, query_context);
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Strings hosts_to_wait = getZooKeeper()->getChildren(zookeeper_path + "/replicas");
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Strings hosts_to_wait;
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Strings unfiltered_hosts = getZooKeeper()->getChildren(zookeeper_path + "/replicas");
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for (const auto & host : unfiltered_hosts)
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{
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if (replica_group_name == parseFullReplicaName(host).replica_group)
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hosts_to_wait.push_back(host);
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}
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return getDistributedDDLStatus(node_path, entry, query_context, &hosts_to_wait);
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}
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@ -1112,11 +1172,11 @@ ASTPtr DatabaseReplicated::parseQueryFromMetadataInZooKeeper(const String & node
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}
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void DatabaseReplicated::dropReplica(
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DatabaseReplicated * database, const String & database_zookeeper_path, const String & shard, const String & replica)
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DatabaseReplicated * database, const String & database_zookeeper_path, const String & shard, const String & replica, const String & replica_group)
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{
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assert(!database || database_zookeeper_path == database->zookeeper_path);
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String full_replica_name = shard.empty() ? replica : getFullReplicaName(shard, replica);
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String full_replica_name = shard.empty() ? replica : getFullReplicaName(shard, replica, replica_group);
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if (full_replica_name.find('/') != std::string::npos)
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Invalid replica name, '/' is not allowed: {}", full_replica_name);
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@ -54,11 +54,19 @@ public:
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void stopReplication() override;
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struct NameParts
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{
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String shard;
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String replica;
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String replica_group;
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};
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String getShardName() const { return shard_name; }
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String getReplicaName() const { return replica_name; }
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String getReplicaGroupName() const { return replica_group_name; }
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String getFullReplicaName() const;
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static String getFullReplicaName(const String & shard, const String & replica);
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static std::pair<String, String> parseFullReplicaName(const String & name);
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static String getFullReplicaName(const String & shard, const String & replica, const String & replica_group);
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static NameParts parseFullReplicaName(const String & name);
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const String & getZooKeeperPath() const { return zookeeper_path; }
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@ -80,7 +88,7 @@ public:
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bool shouldReplicateQuery(const ContextPtr & query_context, const ASTPtr & query_ptr) const override;
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static void dropReplica(DatabaseReplicated * database, const String & database_zookeeper_path, const String & shard, const String & replica);
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static void dropReplica(DatabaseReplicated * database, const String & database_zookeeper_path, const String & shard, const String & replica, const String & replica_group);
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std::vector<UInt8> tryGetAreReplicasActive(const ClusterPtr & cluster_) const;
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@ -126,6 +134,7 @@ private:
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String zookeeper_path;
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String shard_name;
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String replica_name;
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String replica_group_name;
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String replica_path;
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DatabaseReplicatedSettings db_settings;
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@ -159,6 +159,7 @@ Cluster::Address::Address(
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host_name = parsed_host_port.first;
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database_shard_name = info.shard_name;
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database_replica_name = info.replica_name;
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database_replica_group_name = info.replica_group_name;
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port = parsed_host_port.second;
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secure = params.secure ? Protocol::Secure::Enable : Protocol::Secure::Disable;
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priority = params.priority;
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@ -516,7 +517,7 @@ Cluster::Cluster(
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Addresses current;
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for (const auto & replica : shard)
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current.emplace_back(
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DatabaseReplicaInfo{replica, "", ""},
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DatabaseReplicaInfo{replica, "", "", ""},
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params,
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current_shard_num,
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current.size() + 1);
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@ -35,6 +35,7 @@ struct DatabaseReplicaInfo
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String hostname;
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String shard_name;
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String replica_name;
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String replica_group_name;
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};
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struct ClusterConnectionParameters
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@ -111,6 +112,7 @@ public:
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String host_name;
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String database_shard_name;
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String database_replica_name;
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String database_replica_group_name;
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UInt16 port{0};
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String user;
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String password;
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@ -927,7 +927,7 @@ void InterpreterSystemQuery::dropDatabaseReplica(ASTSystemQuery & query)
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if (!query_.replica_zk_path.empty() && fs::path(replicated->getZooKeeperPath()) != fs::path(query_.replica_zk_path))
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return;
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String full_replica_name = query_.shard.empty() ? query_.replica
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: DatabaseReplicated::getFullReplicaName(query_.shard, query_.replica);
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: DatabaseReplicated::getFullReplicaName(query_.shard, query_.replica, query_.replica_group);
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if (replicated->getFullReplicaName() != full_replica_name)
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return;
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@ -943,7 +943,7 @@ void InterpreterSystemQuery::dropDatabaseReplica(ASTSystemQuery & query)
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if (auto * replicated = dynamic_cast<DatabaseReplicated *>(database.get()))
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{
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check_not_local_replica(replicated, query);
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DatabaseReplicated::dropReplica(replicated, replicated->getZooKeeperPath(), query.shard, query.replica);
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DatabaseReplicated::dropReplica(replicated, replicated->getZooKeeperPath(), query.shard, query.replica, query.replica_group);
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}
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else
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throw Exception(ErrorCodes::BAD_ARGUMENTS, "Database {} is not Replicated, cannot drop replica", query.getDatabase());
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@ -968,7 +968,7 @@ void InterpreterSystemQuery::dropDatabaseReplica(ASTSystemQuery & query)
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}
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check_not_local_replica(replicated, query);
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DatabaseReplicated::dropReplica(replicated, replicated->getZooKeeperPath(), query.shard, query.replica);
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DatabaseReplicated::dropReplica(replicated, replicated->getZooKeeperPath(), query.shard, query.replica, query.replica_group);
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LOG_TRACE(log, "Dropped replica {} of Replicated database {}", query.replica, backQuoteIfNeed(database->getDatabaseName()));
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}
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}
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@ -981,7 +981,7 @@ void InterpreterSystemQuery::dropDatabaseReplica(ASTSystemQuery & query)
|
||||
if (auto * replicated = dynamic_cast<DatabaseReplicated *>(elem.second.get()))
|
||||
check_not_local_replica(replicated, query);
|
||||
|
||||
DatabaseReplicated::dropReplica(nullptr, query.replica_zk_path, query.shard, query.replica);
|
||||
DatabaseReplicated::dropReplica(nullptr, query.replica_zk_path, query.shard, query.replica, query.replica_group);
|
||||
LOG_INFO(log, "Dropped replica {} of Replicated database with path {}", query.replica, query.replica_zk_path);
|
||||
}
|
||||
else
|
||||
|
||||
@ -357,9 +357,9 @@ Chunk DDLQueryStatusSource::generateChunkWithUnfinishedHosts() const
|
||||
size_t num = 0;
|
||||
if (is_replicated_database)
|
||||
{
|
||||
auto [shard, replica] = DatabaseReplicated::parseFullReplicaName(host_id);
|
||||
columns[num++]->insert(shard);
|
||||
columns[num++]->insert(replica);
|
||||
auto parts = DatabaseReplicated::parseFullReplicaName(host_id);
|
||||
columns[num++]->insert(parts.shard);
|
||||
columns[num++]->insert(parts.replica);
|
||||
if (active_hosts_set.contains(host_id))
|
||||
columns[num++]->insert(IN_PROGRESS);
|
||||
else
|
||||
@ -511,9 +511,9 @@ Chunk DDLQueryStatusSource::generate()
|
||||
{
|
||||
if (status.code != 0)
|
||||
throw Exception(ErrorCodes::LOGICAL_ERROR, "There was an error on {}: {} (probably it's a bug)", host_id, status.message);
|
||||
auto [shard, replica] = DatabaseReplicated::parseFullReplicaName(host_id);
|
||||
columns[num++]->insert(shard);
|
||||
columns[num++]->insert(replica);
|
||||
auto parts = DatabaseReplicated::parseFullReplicaName(host_id);
|
||||
columns[num++]->insert(parts.shard);
|
||||
columns[num++]->insert(parts.replica);
|
||||
columns[num++]->insert(OK);
|
||||
}
|
||||
else
|
||||
|
||||
@ -107,6 +107,7 @@ public:
|
||||
String replica;
|
||||
String shard;
|
||||
String replica_zk_path;
|
||||
String replica_group;
|
||||
bool is_drop_whole_replica{};
|
||||
String storage_policy;
|
||||
String volume;
|
||||
|
||||
@ -165,6 +165,14 @@ enum class SystemQueryTargetType
|
||||
if (!ParserStringLiteral{}.parse(pos, ast, expected))
|
||||
return false;
|
||||
res->shard = ast->as<ASTLiteral &>().value.safeGet<String>();
|
||||
|
||||
if (database && ParserKeyword{"FROM GROUP"}.ignore(pos, expected))
|
||||
{
|
||||
ASTPtr group_ast;
|
||||
if (!ParserStringLiteral{}.parse(pos, group_ast, expected))
|
||||
return false;
|
||||
res->replica_group = group_ast->as<ASTLiteral &>().value.safeGet<String>();
|
||||
}
|
||||
}
|
||||
|
||||
if (ParserKeyword{"FROM"}.ignore(pos, expected))
|
||||
|
||||
@ -0,0 +1,3 @@
|
||||
<clickhouse>
|
||||
<replica_group_name>backups</replica_group_name>
|
||||
</clickhouse>
|
||||
@ -0,0 +1,14 @@
|
||||
<clickhouse>
|
||||
<profiles>
|
||||
<default>
|
||||
<allow_drop_detached>1</allow_drop_detached>
|
||||
<allow_experimental_database_replicated>1</allow_experimental_database_replicated>
|
||||
<allow_experimental_alter_materialized_view_structure>1</allow_experimental_alter_materialized_view_structure>
|
||||
</default>
|
||||
</profiles>
|
||||
<users>
|
||||
<default>
|
||||
<profile>default</profile>
|
||||
</default>
|
||||
</users>
|
||||
</clickhouse>
|
||||
@ -0,0 +1,129 @@
|
||||
import re
|
||||
import pytest
|
||||
|
||||
from helpers.cluster import ClickHouseCluster
|
||||
from helpers.test_tools import assert_eq_with_retry
|
||||
|
||||
cluster = ClickHouseCluster(__file__)
|
||||
|
||||
main_node_1 = cluster.add_instance(
|
||||
"main_node_1",
|
||||
user_configs=["configs/settings.xml"],
|
||||
with_zookeeper=True,
|
||||
stay_alive=True,
|
||||
macros={"shard": 1, "replica": 1},
|
||||
)
|
||||
main_node_2 = cluster.add_instance(
|
||||
"main_node_2",
|
||||
user_configs=["configs/settings.xml"],
|
||||
with_zookeeper=True,
|
||||
stay_alive=True,
|
||||
macros={"shard": 1, "replica": 2},
|
||||
)
|
||||
backup_node_1 = cluster.add_instance(
|
||||
"backup_node_1",
|
||||
main_configs=["configs/backup_group.xml"],
|
||||
user_configs=["configs/settings.xml"],
|
||||
with_zookeeper=True,
|
||||
stay_alive=True,
|
||||
macros={"shard": 1, "replica": 3},
|
||||
)
|
||||
backup_node_2 = cluster.add_instance(
|
||||
"backup_node_2",
|
||||
main_configs=["configs/backup_group.xml"],
|
||||
user_configs=["configs/settings.xml"],
|
||||
with_zookeeper=True,
|
||||
stay_alive=True,
|
||||
macros={"shard": 1, "replica": 4},
|
||||
)
|
||||
|
||||
all_nodes = [
|
||||
main_node_1,
|
||||
main_node_2,
|
||||
backup_node_1,
|
||||
backup_node_2,
|
||||
]
|
||||
|
||||
uuid_regex = re.compile("[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}")
|
||||
|
||||
|
||||
def assert_create_query(nodes, table_name, expected):
|
||||
replace_uuid = lambda x: re.sub(uuid_regex, "uuid", x)
|
||||
query = "show create table {}".format(table_name)
|
||||
for node in nodes:
|
||||
assert_eq_with_retry(node, query, expected, get_result=replace_uuid)
|
||||
|
||||
|
||||
@pytest.fixture(scope="module")
|
||||
def started_cluster():
|
||||
try:
|
||||
cluster.start()
|
||||
yield cluster
|
||||
|
||||
finally:
|
||||
cluster.shutdown()
|
||||
|
||||
|
||||
def test_cluster_groups(started_cluster):
|
||||
for node in all_nodes:
|
||||
node.query(
|
||||
f"CREATE DATABASE cluster_groups ENGINE = Replicated('/test/cluster_groups', '{node.macros['shard']}', '{node.macros['replica']}');"
|
||||
)
|
||||
|
||||
# 1. system.clusters
|
||||
|
||||
cluster_query = "SELECT host_name from system.clusters WHERE cluster = 'cluster_groups' ORDER BY host_name"
|
||||
expected_main = "main_node_1\nmain_node_2\n"
|
||||
expected_backup = "backup_node_1\nbackup_node_2\n"
|
||||
|
||||
for node in [main_node_1, main_node_2]:
|
||||
assert_eq_with_retry(node, cluster_query, expected_main)
|
||||
|
||||
for node in [backup_node_1, backup_node_2]:
|
||||
assert_eq_with_retry(node, cluster_query, expected_backup)
|
||||
|
||||
# 2. Query execution depends only on your cluster group
|
||||
|
||||
backup_node_1.stop_clickhouse()
|
||||
backup_node_2.stop_clickhouse()
|
||||
|
||||
# OK
|
||||
main_node_1.query(
|
||||
"CREATE TABLE cluster_groups.table_1 (d Date, k UInt64) ENGINE=ReplicatedMergeTree ORDER BY k PARTITION BY toYYYYMM(d);"
|
||||
)
|
||||
|
||||
# Exception
|
||||
main_node_2.stop_clickhouse()
|
||||
settings = {"distributed_ddl_task_timeout": 5}
|
||||
assert (
|
||||
"There are 1 unfinished hosts (0 of them are currently active)"
|
||||
in main_node_1.query_and_get_error(
|
||||
"CREATE TABLE cluster_groups.table_2 (d Date, k UInt64) ENGINE=ReplicatedMergeTree ORDER BY k PARTITION BY toYYYYMM(d);",
|
||||
settings=settings,
|
||||
)
|
||||
)
|
||||
|
||||
# 3. After start both groups are synced
|
||||
|
||||
backup_node_1.start_clickhouse()
|
||||
backup_node_2.start_clickhouse()
|
||||
main_node_2.start_clickhouse()
|
||||
|
||||
expected_1 = "CREATE TABLE cluster_groups.table_1\\n(\\n `d` Date,\\n `k` UInt64\\n)\\nENGINE = ReplicatedMergeTree(\\'/clickhouse/tables/{uuid}/{shard}\\', \\'{replica}\\')\\nPARTITION BY toYYYYMM(d)\\nORDER BY k\\nSETTINGS index_granularity = 8192"
|
||||
expected_2 = "CREATE TABLE cluster_groups.table_2\\n(\\n `d` Date,\\n `k` UInt64\\n)\\nENGINE = ReplicatedMergeTree(\\'/clickhouse/tables/{uuid}/{shard}\\', \\'{replica}\\')\\nPARTITION BY toYYYYMM(d)\\nORDER BY k\\nSETTINGS index_granularity = 8192"
|
||||
|
||||
assert_create_query(all_nodes, "cluster_groups.table_1", expected_1)
|
||||
assert_create_query(all_nodes, "cluster_groups.table_2", expected_2)
|
||||
|
||||
# 4. SYSTEM DROP DATABASE REPLICA
|
||||
backup_node_2.stop_clickhouse()
|
||||
backup_node_1.query(
|
||||
"SYSTEM DROP DATABASE REPLICA '4' FROM SHARD '1' FROM GROUP 'backups' FROM DATABASE cluster_groups"
|
||||
)
|
||||
|
||||
assert_eq_with_retry(backup_node_1, cluster_query, "backup_node_1\n")
|
||||
|
||||
main_node_2.stop_clickhouse()
|
||||
main_node_1.query("SYSTEM DROP DATABASE REPLICA '1|2' FROM DATABASE cluster_groups")
|
||||
|
||||
assert_eq_with_retry(main_node_1, cluster_query, "main_node_1\n")
|
||||
Loading…
Reference in New Issue
Block a user