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ByConity/src/Interpreters/InterpreterSystemQuery.cpp

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/*
* Copyright 2016-2023 ClickHouse, Inc.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* This file may have been modified by Bytedance Ltd. and/or its affiliates (“ Bytedance's Modifications”).
* All Bytedance's Modifications are Copyright (2023) Bytedance Ltd. and/or its affiliates.
*/
#include <Interpreters/InterpreterSystemQuery.h>
#include <Catalog/Catalog.h>
#include <Common/DNSResolver.h>
#include <Common/ActionLock.h>
#include <Common/typeid_cast.h>
#include <Common/getNumberOfPhysicalCPUCores.h>
#include <Common/JeprofControl.h>
#include <Common/SymbolIndex.h>
#include <Common/ThreadPool.h>
#include <Common/escapeForFileName.h>
#include <Common/ShellCommand.h>
#include <MergeTreeCommon/CnchServerTopology.h>
#include <MergeTreeCommon/CnchServerLeader.h>
#include <MergeTreeCommon/CnchTopologyMaster.h>
#include <MergeTreeCommon/GlobalGCManager.h>
#include <CloudServices/CnchBGThreadCommon.h>
#include <CloudServices/CnchPartGCThread.h>
#include <CloudServices/CnchManifestCheckpointThread.h>
#include <CloudServices/CnchServerClientPool.h>
#include <DaemonManager/DaemonManagerClient.h>
#include <Interpreters/Context.h>
#include <Interpreters/DatabaseCatalog.h>
#include <Interpreters/ExternalDictionariesLoader.h>
#include <Interpreters/ExternalModelsLoader.h>
#include <Interpreters/EmbeddedDictionaries.h>
#include <Interpreters/ActionLocksManager.h>
#include <Interpreters/InterpreterDropQuery.h>
#include <Interpreters/InterpreterCreateQuery.h>
#include <Interpreters/InterpreterRenameQuery.h>
#include <Interpreters/QueryLog.h>
#include <Interpreters/executeDDLQueryOnCluster.h>
#include <Interpreters/PartLog.h>
#include <Interpreters/QueryThreadLog.h>
#include <Interpreters/TraceLog.h>
#include <Interpreters/TextLog.h>
#include <Interpreters/MetricLog.h>
#include <Interpreters/AsynchronousMetricLog.h>
#include <Interpreters/OpenTelemetrySpanLog.h>
#include <Interpreters/ProcessorsProfileLog.h>
#include <Interpreters/ZooKeeperLog.h>
#include <Interpreters/JIT/CompiledExpressionCache.h>
#include <Interpreters/executeQuery.h>
#include <Interpreters/loadMetadata.h>
#include <BridgeHelper/CatBoostLibraryBridgeHelper.h>
#include <Access/ContextAccess.h>
#include <Access/AllowedClientHosts.h>
#include <CloudServices/CnchBGThreadsMap.h>
#include <CloudServices/DedupWorkerManager.h>
#include <Databases/IDatabase.h>
#include <DataStreams/OneBlockInputStream.h>
#include <Disks/DiskRestartProxy.h>
#include <Storages/StorageDistributed.h>
#include <Storages/StorageReplicatedMergeTree.h>
#include <Storages/StorageS3.h>
#include <Storages/StorageFactory.h>
#include <Storages/Kafka/StorageCnchKafka.h>
#include <Storages/MergeTree/ChecksumsCache.h>
#include <Storages/PartCacheManager.h>
#include <Storages/StorageMaterializedView.h>
#include <Parsers/ASTDropQuery.h>
#include <Parsers/ASTCreateQuery.h>
#include <Parsers/formatAST.h>
#include <Poco/UUIDGenerator.h>
#include <Poco/URI.h>
#include <Poco/JSON/Parser.h>
#include <TableFunctions/ITableFunction.h>
#include <FormaterTool/HDFSDumper.h>
#include <csignal>
#include <algorithm>
#include <unistd.h>
#include <Interpreters/QueryExchangeLog.h>
#include <Interpreters/CnchSystemLog.h>
#include <Interpreters/AutoStatsTaskLog.h>
#include <Interpreters/RemoteReadLog.h>
#include <common/sleep.h>
#include <Core/UUID.h>
#include <Interpreters/StorageID.h>
#include <Storages/StorageCnchMergeTree.h>
#include <Transaction/LockManager.h>
#if !defined(ARCADIA_BUILD)
# include "config_core.h"
#endif
#if USE_RDKAFKA
#include <Storages/Kafka/CnchKafkaOffsetManager.h>
#endif
#if USE_MYSQL
#include <Databases/MySQL/DatabaseCnchMaterializedMySQL.h>
#endif
namespace DB
{
namespace ErrorCodes
{
extern const int LOGICAL_ERROR;
extern const int BAD_ARGUMENTS;
extern const int CANNOT_KILL;
extern const int NOT_IMPLEMENTED;
extern const int TIMEOUT_EXCEEDED;
extern const int TABLE_WAS_NOT_DROPPED;
extern const int NO_ZOOKEEPER;
}
namespace ActionLocks
{
extern StorageActionBlockType PartsMerge;
extern StorageActionBlockType PartsFetch;
extern StorageActionBlockType PartsSend;
extern StorageActionBlockType ReplicationQueue;
extern StorageActionBlockType DistributedSend;
extern StorageActionBlockType PartsTTLMerge;
extern StorageActionBlockType PartsMove;
}
namespace
{
ExecutionStatus getOverallExecutionStatusOfCommands()
{
return ExecutionStatus(0);
}
/// Consequently tries to execute all commands and generates final exception message for failed commands
template <typename Callable, typename ... Callables>
ExecutionStatus getOverallExecutionStatusOfCommands(Callable && command, Callables && ... commands)
{
ExecutionStatus status_head(0);
try
{
command();
}
catch (...)
{
status_head = ExecutionStatus::fromCurrentException();
}
ExecutionStatus status_tail = getOverallExecutionStatusOfCommands(std::forward<Callables>(commands)...);
auto res_status = status_head.code != 0 ? status_head.code : status_tail.code;
auto res_message = status_head.message + (status_tail.message.empty() ? "" : ("\n" + status_tail.message));
return ExecutionStatus(res_status, res_message);
}
/// Consequently tries to execute all commands and throws exception with info about failed commands
template <typename ... Callables>
void executeCommandsAndThrowIfError(Callables && ... commands)
{
auto status = getOverallExecutionStatusOfCommands(std::forward<Callables>(commands)...);
if (status.code != 0)
throw Exception(status.message, status.code);
}
AccessType getRequiredAccessType(StorageActionBlockType action_type)
{
if (action_type == ActionLocks::PartsMerge)
return AccessType::SYSTEM_MERGES;
else if (action_type == ActionLocks::PartsFetch)
return AccessType::SYSTEM_FETCHES;
else if (action_type == ActionLocks::PartsSend)
return AccessType::SYSTEM_REPLICATED_SENDS;
else if (action_type == ActionLocks::ReplicationQueue)
return AccessType::SYSTEM_REPLICATION_QUEUES;
else if (action_type == ActionLocks::DistributedSend)
return AccessType::SYSTEM_DISTRIBUTED_SENDS;
else if (action_type == ActionLocks::PartsTTLMerge)
return AccessType::SYSTEM_TTL_MERGES;
else if (action_type == ActionLocks::PartsMove)
return AccessType::SYSTEM_MOVES;
else
throw Exception("Unknown action type: " + std::to_string(action_type), ErrorCodes::LOGICAL_ERROR);
}
constexpr std::string_view table_is_not_replicated = "Table {} is not replicated";
}
/// Implements SYSTEM [START|STOP] <something action from ActionLocks>
void InterpreterSystemQuery::startStopAction(StorageActionBlockType action_type, bool start)
{
auto manager = getContext()->getActionLocksManager();
manager->cleanExpired();
if (volume_ptr && action_type == ActionLocks::PartsMerge)
{
volume_ptr->setAvoidMergesUserOverride(!start);
}
else if (table_id)
{
auto table = DatabaseCatalog::instance().tryGetTable(table_id, getContext());
if (table)
{
if (start)
{
manager->remove(table, action_type);
table->onActionLockRemove(action_type);
}
else
manager->add(table, action_type);
}
}
else
{
auto access = getContext()->getAccess();
for (auto & elem : DatabaseCatalog::instance().getDatabases(getContext()))
{
for (auto iterator = elem.second->getTablesIterator(getContext()); iterator->isValid(); iterator->next())
{
StoragePtr table = iterator->table();
if (!table)
continue;
if (!access->isGranted(getRequiredAccessType(action_type), elem.first, iterator->name()))
{
LOG_INFO(
log,
"Access {} denied, skipping {}.{}",
toString(getRequiredAccessType(action_type)),
elem.first,
iterator->name());
continue;
}
if (start)
{
manager->remove(table, action_type);
table->onActionLockRemove(action_type);
}
else
manager->add(table, action_type);
}
}
}
}
InterpreterSystemQuery::InterpreterSystemQuery(const ASTPtr & query_ptr_, ContextMutablePtr context_)
: WithMutableContext(context_), query_ptr(query_ptr_->clone()), log(getLogger("InterpreterSystemQuery"))
{
}
BlockIO InterpreterSystemQuery::execute()
{
auto & query = query_ptr->as<ASTSystemQuery &>();
if (!query.cluster.empty())
return executeDDLQueryOnCluster(query_ptr, getContext(), getRequiredAccessForDDLOnCluster());
using Type = ASTSystemQuery::Type;
/// Use global context with fresh system profile settings
auto system_context = Context::createCopy(getContext()->getGlobalContext());
system_context->setSetting("profile", getContext()->getSystemProfileName());
/// Make canonical query for simpler processing
if (query.type == Type::RELOAD_DICTIONARY)
{
if (!query.database.empty())
query.table = query.database + "." + query.table;
}
else if (!query.table.empty())
{
table_id = getContext()->resolveStorageID(StorageID(query.database, query.table), Context::ResolveOrdinary);
}
volume_ptr = {};
if (!query.storage_policy.empty() && !query.volume.empty())
volume_ptr = getContext()->getStoragePolicy(query.storage_policy)->getVolumeByName(query.volume, true);
/// Common system command
switch (query.type)
{
case Type::SHUTDOWN:
{
getContext()->checkAccess(AccessType::SYSTEM_SHUTDOWN);
if (kill(0, SIGTERM))
throwFromErrno("System call kill(0, SIGTERM) failed", ErrorCodes::CANNOT_KILL);
break;
}
case Type::KILL:
{
getContext()->checkAccess(AccessType::SYSTEM_SHUTDOWN);
/// Exit with the same code as it is usually set by shell when process is terminated by SIGKILL.
/// It's better than doing 'raise' or 'kill', because they have no effect for 'init' process (with pid = 0, usually in Docker).
LOG_INFO(log, "Exit immediately as the SYSTEM KILL command has been issued.");
_exit(128 + SIGKILL);
// break; /// unreachable
}
case Type::SUSPEND:
{
auto command = fmt::format("kill -STOP {0} && sleep {1} && kill -CONT {0}", getpid(), query.seconds);
LOG_DEBUG(log, "Will run {}", command);
auto res = ShellCommand::execute(command);
res->in.close();
WriteBufferFromOwnString out;
copyData(res->out, out);
copyData(res->err, out);
if (!out.str().empty())
LOG_DEBUG(log, "The command returned output: {}", command, out.str());
res->wait();
break;
}
case Type::DROP_DNS_CACHE:
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_DNS_CACHE);
DNSResolver::instance().dropCache();
/// Reinitialize clusters to update their resolved_addresses
system_context->reloadClusterConfig();
break;
}
case Type::DROP_MARK_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_MARK_CACHE);
system_context->dropMarkCache();
break;
case Type::DROP_UNCOMPRESSED_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_UNCOMPRESSED_CACHE);
system_context->dropUncompressedCache();
break;
case Type::DROP_NVM_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_NVM_CACHE);
system_context->dropNvmCache();
break;
case Type::DROP_SCHEMA_CACHE:
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_SCHEMA_CACHE);
std::unordered_set<String> caches_to_drop;
if (query.schema_cache_storage.empty())
caches_to_drop = {"S3"};
else
caches_to_drop = {query.schema_cache_storage};
#if USE_AWS_S3
if (caches_to_drop.contains("S3"))
StorageS3::getSchemaCache(getContext()).clear();
#endif
break;
}
case Type::DROP_MMAP_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_MMAP_CACHE);
system_context->dropMMappedFileCache();
break;
case Type::DROP_QUERY_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_QUERY_CACHE);
getContext()->dropQueryCache();
break;
case Type::DROP_CHECKSUMS_CACHE:
dropChecksumsCache(table_id);
break;
#if USE_EMBEDDED_COMPILER
case Type::DROP_COMPILED_EXPRESSION_CACHE:
getContext()->checkAccess(AccessType::SYSTEM_DROP_COMPILED_EXPRESSION_CACHE);
if (auto * cache = CompiledExpressionCacheFactory::instance().tryGetCache())
cache->reset();
break;
#endif
case Type::RELOAD_DICTIONARY:
{
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_DICTIONARY);
auto & external_dictionaries_loader = system_context->getExternalDictionariesLoader();
external_dictionaries_loader.reloadDictionary(query.table, getContext());
ExternalDictionariesLoader::resetAll();
break;
}
case Type::RELOAD_DICTIONARIES:
{
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_DICTIONARY);
executeCommandsAndThrowIfError(
[&] { system_context->getExternalDictionariesLoader().reloadAllTriedToLoad(); },
[&] { system_context->getEmbeddedDictionaries().reload(); }
);
ExternalDictionariesLoader::resetAll();
break;
}
case Type::RELOAD_MODEL:
{
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_MODEL);
auto bridge_helper = std::make_unique<CatBoostLibraryBridgeHelper>(getContext(), query.target_model);
bridge_helper->removeModel();
break;
}
case Type::RELOAD_MODELS:
{
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_MODEL);
auto bridge_helper = std::make_unique<CatBoostLibraryBridgeHelper>(getContext());
bridge_helper->removeAllModels();
break;
}
case Type::RELOAD_EMBEDDED_DICTIONARIES:
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_EMBEDDED_DICTIONARIES);
system_context->getEmbeddedDictionaries().reload();
break;
case Type::RELOAD_CONFIG:
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_CONFIG);
system_context->reloadConfig();
break;
case Type::RELOAD_FORMAT_SCHEMA:
// REUSE SYSTEM_RELOAD_CONF
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_CONFIG);
reloadFormatSchema(system_context, system_context->getFormatSchemaPath(true), system_context->getFormatSchemaPath(false));
break;
case Type::RELOAD_SYMBOLS:
{
#if defined(__ELF__) && !defined(__FreeBSD__)
getContext()->checkAccess(AccessType::SYSTEM_RELOAD_SYMBOLS);
(void)SymbolIndex::instance(true);
break;
#else
throw Exception("SYSTEM RELOAD SYMBOLS is not supported on current platform", ErrorCodes::NOT_IMPLEMENTED);
#endif
}
case Type::RESTART_DISK:
restartDisk(query.disk);
break;
case Type::FLUSH_LOGS:
{
getContext()->checkAccess(AccessType::SYSTEM_FLUSH_LOGS);
executeCommandsAndThrowIfError(
[&] { if (auto query_log = getContext()->getQueryLog()) query_log->flush(true); },
[&] { if (auto part_log = getContext()->getPartLog("")) part_log->flush(true); },
[&] { if (auto query_thread_log = getContext()->getQueryThreadLog()) query_thread_log->flush(true); },
[&] { if (auto query_exchange_log = getContext()->getQueryExchangeLog()) query_exchange_log->flush(true); },
[&] { if (auto trace_log = getContext()->getTraceLog()) trace_log->flush(true); },
[&] { if (auto text_log = getContext()->getTextLog()) text_log->flush(true); },
[&] { if (auto metric_log = getContext()->getMetricLog()) metric_log->flush(true); },
[&] { if (auto asynchronous_metric_log = getContext()->getAsynchronousMetricLog()) asynchronous_metric_log->flush(true); },
[&] { if (auto opentelemetry_span_log = getContext()->getOpenTelemetrySpanLog()) opentelemetry_span_log->flush(true); },
[&] { if (auto zookeeper_log = getContext()->getZooKeeperLog()) zookeeper_log->flush(true); },
[&] { if (auto processors_profile_log = getContext()->getProcessorsProfileLog()) processors_profile_log->flush(true); },
[&] { if (auto auto_stats_task_log = getContext()->getAutoStatsTaskLog()) auto_stats_task_log->flush(true); },
[&] { if (auto remote_read_log = getContext()->getRemoteReadLog()) remote_read_log->flush(true); }
);
break;
}
case Type::FLUSH_CNCH_LOG:
case Type::STOP_CNCH_LOG:
case Type::RESUME_CNCH_LOG:
{
executeActionOnCNCHLog(query.table, query.type);
break;
}
case Type::METASTORE:
executeMetastoreCmd(query);
break;
case Type::START_RESOURCE_GROUP:
system_context->startResourceGroup();
break;
case Type::STOP_RESOURCE_GROUP:
system_context->stopResourceGroup();
break;
case Type::JEPROF_DUMP:
#if USE_JEMALLOC
JeprofControl::instance().dump();
break;
#else
throw Exception("Jemalloc is not used", ErrorCodes::BAD_ARGUMENTS);
#endif
default:
{
if (getContext()->getServerType() == ServerType::cnch_server)
return executeCnchCommand(query, system_context);
return executeLocalCommand(query, system_context);
}
}
return BlockIO{};
}
BlockIO InterpreterSystemQuery::executeCnchCommand(ASTSystemQuery & query, ContextMutablePtr & system_context)
{
using Type = ASTSystemQuery::Type;
switch (query.type)
{
case Type::START_CONSUME:
case Type::STOP_CONSUME:
case Type::DROP_CONSUME:
case Type::RESTART_CONSUME:
controlConsume(query.type);
break;
case Type::START_MATERIALIZEDMYSQL:
case Type::STOP_MATERIALIZEDMYSQL:
case Type::RESYNC_MATERIALIZEDMYSQL_TABLE:
executeMaterializedMyQLInCnchServer(query);
break;
case Type::RESET_CONSUME_OFFSET:
resetConsumeOffset(query, system_context);
break;
case Type::STOP_MERGES:
case Type::START_MERGES:
case Type::REMOVE_MERGES:
case Type::RESUME_ALL_MERGES:
case Type::SUSPEND_ALL_MERGES:
case Type::STOP_GC:
case Type::START_GC:
case Type::FORCE_GC:
case Type::RESUME_ALL_GC:
case Type::SUSPEND_ALL_GC:
case Type::START_DEDUP_WORKER:
case Type::STOP_DEDUP_WORKER:
case Type::START_CLUSTER:
case Type::STOP_CLUSTER:
case Type::START_VIEW:
case Type::STOP_VIEW:
case Type::STOP_MOVES:
case Type::START_MOVES:
executeBGTaskInCnchServer(system_context, query.type);
break;
case Type::GC:
executeGc(query);
break;
case Type::MANIFEST_CHECKPOINT:
executeCheckpoint(query);
break;
case Type::DEDUP_WITH_HIGH_PRIORITY:
dedupWithHighPriority(query);
break;
case Type::DEDUP:
executeDedup(query);
break;
case Type::DUMP_SERVER_STATUS:
dumpCnchServerStatus();
break;
case Type::DROP_CNCH_META_CACHE:
dropCnchMetaCache();
break;
case Type::DROP_CNCH_PART_CACHE:
dropCnchMetaCache(false, true);
break;
case Type::DROP_CNCH_DELETE_BITMAP_CACHE:
dropCnchMetaCache(true);
break;
case Type::SYNC_DEDUP_WORKER:
executeSyncDedupWorker(system_context);
break;
case Type::SYNC_REPAIR_TASK:
executeSyncRepairTask(system_context);
break;
case Type::CLEAN_TRANSACTION:
cleanTransaction(query.txn_id);
break;
case Type::CLEAN_TRASH_TABLE:
executeCleanTrashTable(query);
break;
case Type::CLEAN_FILESYSTEM_LOCK:
cleanFilesystemLock();
break;
case Type::LOCK_MEMORY_LOCK:
lockMemoryLock(query, table_id, system_context);
break;
case Type::RECALCULATE_METRICS:
recalculateMetrics(query);
break;
case Type::DROP_VIEW_META:
dropMvMeta(query);
break;
case Type::RELEASE_MEMORY_LOCK:
releaseMemoryLock(query, table_id, system_context);
break;
case Type::TRIGGER_HDFS_CONFIG_UPDATE:
triggerHDFSConfigUpdate();
break;
default:
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "System command {} is not supported in CNCH", ASTSystemQuery::typeToString(query.type));
}
return {};
}
void InterpreterSystemQuery::dropMvMeta(ASTSystemQuery & query)
{
if (!query.database.empty() && !query.table.empty())
{
auto storage = DatabaseCatalog::instance().getTable(StorageID{query.database, query.table}, getContext());
if (auto * materialized_view = dynamic_cast<StorageMaterializedView *>(storage.get()))
materialized_view->dropMvMeta(getContext());
else
throw Exception(
ErrorCodes::BAD_ARGUMENTS, "System command {} is only accept materialized view", ASTSystemQuery::typeToString(query.type));
}
else
{
throw Exception(
ErrorCodes::BAD_ARGUMENTS, "system drop view meta need both databse and table name with format database.table", ASTSystemQuery::typeToString(query.type));
}
}
BlockIO InterpreterSystemQuery::executeLocalCommand(ASTSystemQuery & query, ContextMutablePtr & system_context)
{
using Type = ASTSystemQuery::Type;
switch (query.type)
{
case Type::STOP_MERGES:
startStopAction(ActionLocks::PartsMerge, false);
break;
case Type::START_MERGES:
startStopAction(ActionLocks::PartsMerge, true);
break;
case Type::STOP_TTL_MERGES:
startStopAction(ActionLocks::PartsTTLMerge, false);
break;
case Type::START_TTL_MERGES:
startStopAction(ActionLocks::PartsTTLMerge, true);
break;
case Type::STOP_MOVES:
startStopAction(ActionLocks::PartsMove, false);
break;
case Type::START_MOVES:
startStopAction(ActionLocks::PartsMove, true);
break;
case Type::STOP_FETCHES:
startStopAction(ActionLocks::PartsFetch, false);
break;
case Type::START_FETCHES:
startStopAction(ActionLocks::PartsFetch, true);
break;
case Type::STOP_REPLICATED_SENDS:
startStopAction(ActionLocks::PartsSend, false);
break;
case Type::START_REPLICATED_SENDS:
startStopAction(ActionLocks::PartsSend, true);
break;
case Type::STOP_REPLICATION_QUEUES:
startStopAction(ActionLocks::ReplicationQueue, false);
break;
case Type::START_REPLICATION_QUEUES:
startStopAction(ActionLocks::ReplicationQueue, true);
break;
case Type::STOP_DISTRIBUTED_SENDS:
startStopAction(ActionLocks::DistributedSend, false);
break;
case Type::START_DISTRIBUTED_SENDS:
startStopAction(ActionLocks::DistributedSend, true);
break;
case Type::DROP_REPLICA:
dropReplica(query);
break;
case Type::SYNC_REPLICA:
syncReplica(query);
break;
case Type::FLUSH_DISTRIBUTED:
flushDistributed(query);
break;
case Type::RESTART_REPLICAS:
restartReplicas(system_context);
break;
case Type::RESTART_REPLICA:
if (!tryRestartReplica(table_id, system_context))
throw Exception(ErrorCodes::BAD_ARGUMENTS, table_is_not_replicated.data(), table_id.getNameForLogs());
break;
case Type::RESTORE_REPLICA:
restoreReplica();
break;
case Type::STOP_LISTEN_QUERIES:
case Type::START_LISTEN_QUERIES:
throw Exception(String(ASTSystemQuery::typeToString(query.type)) + " is not supported yet", ErrorCodes::NOT_IMPLEMENTED);
case Type::FETCH_PARTS:
fetchParts(query, table_id, system_context);
break;
case Type::CLEAR_BROKEN_TABLES:
clearBrokenTables(system_context);
break;
default:
throw Exception(ErrorCodes::NOT_IMPLEMENTED, "System command {} is not supported", ASTSystemQuery::typeToString(query.type));
}
return {};
}
void InterpreterSystemQuery::executeBGTaskInCnchServer(ContextMutablePtr & system_context, ASTSystemQuery::Type type) const
{
using Type = ASTSystemQuery::Type;
auto daemon_manager = getContext()->getDaemonManagerClient();
if (table_id.empty())
{
switch (type)
{
case Type::RESUME_ALL_MERGES:
daemon_manager->controlDaemonJob(StorageID::createEmpty(), CnchBGThreadType::MergeMutate, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::SUSPEND_ALL_MERGES:
daemon_manager->controlDaemonJob(StorageID::createEmpty(), CnchBGThreadType::MergeMutate, CnchBGThreadAction::Remove, CurrentThread::getQueryId().toString());
break;
case Type::RESUME_ALL_GC:
daemon_manager->controlDaemonJob(StorageID::createEmpty(), CnchBGThreadType::PartGC, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::SUSPEND_ALL_GC:
daemon_manager->controlDaemonJob(StorageID::createEmpty(), CnchBGThreadType::PartGC, CnchBGThreadAction::Remove, CurrentThread::getQueryId().toString());
break;
default:
throw Exception("Table name should be specified for control specified background task", ErrorCodes::LOGICAL_ERROR);
}
return;
}
auto storage = DatabaseCatalog::instance().getTable(table_id, system_context);
if (!dynamic_cast<StorageCnchMergeTree *>(storage.get()) && !dynamic_cast<StorageMaterializedView *>(storage.get()))
throw Exception("StorageCnchMergeTree or StorageMaterializedView is expected, but got " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
switch (type)
{
case Type::START_MERGES:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::MergeMutate, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_MERGES:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::MergeMutate, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
case Type::REMOVE_MERGES:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::MergeMutate, CnchBGThreadAction::Remove, CurrentThread::getQueryId().toString());
break;
case Type::START_GC:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::PartGC, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_GC:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::PartGC, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
case Type::FORCE_GC:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::PartGC, CnchBGThreadAction::Wakeup, CurrentThread::getQueryId().toString());
break;
case Type::START_DEDUP_WORKER:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::DedupWorker, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_DEDUP_WORKER:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::DedupWorker, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
case Type::START_CLUSTER:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::Clustering, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_CLUSTER:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::Clustering, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
case Type::START_VIEW:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::CnchRefreshMaterializedView, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_VIEW:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::CnchRefreshMaterializedView, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
case Type::START_MOVES:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::PartMover, CnchBGThreadAction::Start, CurrentThread::getQueryId().toString());
break;
case Type::STOP_MOVES:
daemon_manager->controlDaemonJob(storage->getStorageID(), CnchBGThreadType::PartMover, CnchBGThreadAction::Stop, CurrentThread::getQueryId().toString());
break;
default:
throw Exception("Unknown command type " + toString(ASTSystemQuery::typeToString(type)), ErrorCodes::LOGICAL_ERROR);
}
}
void InterpreterSystemQuery::executeSyncDedupWorker(ContextMutablePtr & system_context) const
{
if (table_id.empty())
throw Exception("Table name should be specified for control background task", ErrorCodes::BAD_ARGUMENTS);
auto storage = DatabaseCatalog::instance().getTable(table_id, system_context);
auto cnch_storage = dynamic_cast<StorageCnchMergeTree *>(storage.get());
if (!cnch_storage)
throw Exception("StorageCnchMergeTree is expected, but got " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
cnch_storage->waitForStagedPartsToPublish(system_context);
}
void InterpreterSystemQuery::executeSyncRepairTask(ContextMutablePtr & system_context) const
{
if (table_id.empty())
throw Exception("Table name should be specified for control background task", ErrorCodes::BAD_ARGUMENTS);
auto storage = DatabaseCatalog::instance().getTable(table_id, system_context);
auto * cnch_storage = dynamic_cast<StorageCnchMergeTree *>(storage.get());
if (!cnch_storage)
throw Exception("StorageCnchMergeTree is expected, but got " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
auto data_checker = std::make_shared<DedupDataChecker>(getContext(), storage->getCnchStorageID().getNameForLogs() + "(data_checker)", *cnch_storage);
data_checker->waitForNoDuplication(system_context);
}
void InterpreterSystemQuery::controlConsume(ASTSystemQuery::Type type)
{
if (table_id.empty())
throw Exception("Empty table id for executing START/STOP consume", ErrorCodes::LOGICAL_ERROR);
auto storage = DatabaseCatalog::instance().getTable(table_id, getContext());
auto * cnch_kafka = dynamic_cast<StorageCnchKafka *>(storage.get());
if (!cnch_kafka)
throw Exception("CnchKafka is supported but provided " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
auto local_context = getContext();
auto daemon_manager = local_context->getDaemonManagerClient();
auto catalog = local_context->getCnchCatalog();
using Type = ASTSystemQuery::Type;
switch (type)
{
case Type::START_CONSUME:
daemon_manager->controlDaemonJob(cnch_kafka->getStorageID(), CnchBGThreadType::Consumer, CnchBGThreadAction::Start, local_context->getCurrentQueryId());
break;
case Type::STOP_CONSUME:
daemon_manager->controlDaemonJob(cnch_kafka->getStorageID(), CnchBGThreadType::Consumer, CnchBGThreadAction::Stop, local_context->getCurrentQueryId());
break;
case Type::RESTART_CONSUME:
daemon_manager->controlDaemonJob(cnch_kafka->getStorageID(), CnchBGThreadType::Consumer, CnchBGThreadAction::Stop, local_context->getCurrentQueryId());
usleep(500 * 1000);
daemon_manager->controlDaemonJob(cnch_kafka->getStorageID(), CnchBGThreadType::Consumer, CnchBGThreadAction::Start, local_context->getCurrentQueryId());
break;
case Type::DROP_CONSUME:
daemon_manager->controlDaemonJob(cnch_kafka->getStorageID(), CnchBGThreadType::Consumer, CnchBGThreadAction::Drop, local_context->getCurrentQueryId());
break;
default:
throw Exception("Unknown command type " + String(ASTSystemQuery::typeToString(type)), ErrorCodes::LOGICAL_ERROR);
}
}
void InterpreterSystemQuery::resetConsumeOffset(ASTSystemQuery & query, ContextMutablePtr & system_context)
{
Poco::JSON::Parser json_parser;
Poco::Dynamic::Var result = json_parser.parse(query.string_data);
auto object = result.extract<Poco::JSON::Object::Ptr>();
if (!object->has("database_name") || !object->has("table_name"))
throw Exception("Database and table name are required for ResetConsumeOffset", ErrorCodes::BAD_ARGUMENTS);
String database_name = object->getValue<std::string>("database_name");
String table_name = object->getValue<std::string>("table_name");
auto storage = system_context->getCnchCatalog()->getTable(*system_context, database_name, table_name, system_context->getTimestamp());
auto * cnch_kafka = dynamic_cast<StorageCnchKafka *>(storage.get());
if (!cnch_kafka)
throw Exception("CnchKafka is expected but provided " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
CnchKafkaOffsetManagerPtr kafka_offset_manager = std::make_shared<CnchKafkaOffsetManager>(cnch_kafka->getStorageID(), system_context);
if (object->has("offset_value"))
{
int64_t offset = object->getValue<int64_t>("offset_value");
kafka_offset_manager->resetOffsetToSpecialPosition(offset);
}
else if (object->has("timestamp"))
{
uint64_t timestamp = object->getValue<uint64_t>("timestamp");
kafka_offset_manager->resetOffsetWithTimestamp(timestamp);
}
else if (object->has("offset_values"))
{
String topic_name = object->getValue<std::string>("topic_name");
Poco::JSON::Array::Ptr children = object->getArray("offset_values");
cppkafka::TopicPartitionList tpl;
for (const auto & e : *children)
{
auto e_object = e.extract<Poco::JSON::Object::Ptr>();
if (e_object->has("offset") && e_object->has("partition"))
{
int64_t offset = e_object->getValue<int64_t>("offset");
int partition_number = e_object->getValue<int>("partition");
tpl.push_back({topic_name, partition_number, offset});
}
else
throw Exception("sub-object under offset_values Array need to has offset and partition!, input: "
+ query.string_data, ErrorCodes::BAD_ARGUMENTS);
}
kafka_offset_manager->resetOffsetWithSpecificOffsets(tpl);
}
else
throw Exception("offset should be set by one of the parameters: timestamp, offset_value, offset_values. input: "
+ query.string_data, ErrorCodes::BAD_ARGUMENTS);
}
void InterpreterSystemQuery::executeMaterializedMyQLInCnchServer(const ASTSystemQuery & query)
{
ContextPtr local_context = getContext();
auto database = DatabaseCatalog::instance().getDatabase(query.database, local_context);
auto * materialized_mysql = dynamic_cast<DatabaseCnchMaterializedMySQL*>(database.get());
if (!materialized_mysql)
throw Exception("Expect CnchMaterializedMySQL, but got " + database->getEngineName(), ErrorCodes::BAD_ARGUMENTS);
auto daemon_manager = getContext()->getDaemonManagerClient();
using Type = ASTSystemQuery::Type;
switch (query.type)
{
/// TODO: record the status in catalog for persistent
case Type::START_MATERIALIZEDMYSQL:
daemon_manager->controlDaemonJob(materialized_mysql->getStorageID(), CnchBGThreadType::MaterializedMySQL, CnchBGThreadAction::Start, local_context->getCurrentQueryId());
break;
case Type::STOP_MATERIALIZEDMYSQL:
daemon_manager->controlDaemonJob(materialized_mysql->getStorageID(), CnchBGThreadType::MaterializedMySQL, CnchBGThreadAction::Stop, local_context->getCurrentQueryId());
break;
case Type::RESYNC_MATERIALIZEDMYSQL_TABLE:
/// Here we use getContext() rather than system_context as query forwarding needs process_list_entry
materialized_mysql->manualResyncTable(query.table, getContext());
break;
default:
throw Exception(String(ASTSystemQuery::typeToString(query.type)) + " is not supported now", ErrorCodes::NOT_IMPLEMENTED);
}
}
void InterpreterSystemQuery::restoreReplica()
{
getContext()->checkAccess(AccessType::SYSTEM_RESTORE_REPLICA, table_id);
const zkutil::ZooKeeperPtr& zookeeper = getContext()->getZooKeeper();
if (zookeeper->expired())
throw Exception(ErrorCodes::NO_ZOOKEEPER,
"Cannot restore table metadata because ZooKeeper session has expired");
const StoragePtr table_ptr = DatabaseCatalog::instance().getTable(table_id, getContext());
auto * const table_replicated_ptr = dynamic_cast<StorageReplicatedMergeTree *>(table_ptr.get());
if (table_replicated_ptr == nullptr)
throw Exception(ErrorCodes::BAD_ARGUMENTS, table_is_not_replicated.data(), table_id.getNameForLogs());
auto & table_replicated = *table_replicated_ptr;
StorageReplicatedMergeTree::Status status;
table_replicated.getStatus(status);
if (!status.is_readonly)
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Replica must be readonly");
const String replica_name = table_replicated.getReplicaName();
const String& zk_root_path = status.zookeeper_path;
if (String replica_path = zk_root_path + "replicas/" + replica_name; zookeeper->exists(replica_path))
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"Replica path is present at {} -- nothing to restore. "
"If you are sure that metadata it lost and replica path contain some garbage, "
"then use SYSTEM DROP REPLICA query first.", replica_path);
table_replicated.restoreMetadataInZooKeeper();
}
StoragePtr InterpreterSystemQuery::tryRestartReplica(const StorageID & replica, ContextMutablePtr system_context, bool need_ddl_guard)
{
getContext()->checkAccess(AccessType::SYSTEM_RESTART_REPLICA, replica);
auto table_ddl_guard = need_ddl_guard
? DatabaseCatalog::instance().getDDLGuard(replica.getDatabaseName(), replica.getTableName())
: nullptr;
auto [database, table] = DatabaseCatalog::instance().tryGetDatabaseAndTable(replica, getContext());
ASTPtr create_ast;
/// Detach actions
if (!table)
return nullptr;
if (!dynamic_cast<const StorageReplicatedMergeTree *>(table.get()))
return nullptr;
table->flushAndShutdown();
{
/// If table was already dropped by anyone, an exception will be thrown
auto table_lock = table->lockExclusively(getContext()->getCurrentQueryId(), getContext()->getSettingsRef().lock_acquire_timeout);
create_ast = database->getCreateTableQuery(replica.table_name, getContext());
database->detachTable(replica.table_name);
MergeTreeData * storage = dynamic_cast<MergeTreeData *>(table.get());
if (storage && storage->getMetastore())
storage->getMetastore()->closeMetastore();
}
table.reset();
/// Attach actions
/// getCreateTableQuery must return canonical CREATE query representation, there are no need for AST postprocessing
auto & create = create_ast->as<ASTCreateQuery &>();
create.attach = true;
auto columns = InterpreterCreateQuery::getColumnsDescription(*create.columns_list->columns, system_context, true, true);
auto constraints = InterpreterCreateQuery::getConstraintsDescription(create.columns_list->constraints);
auto foreign_keys = InterpreterCreateQuery::getForeignKeysDescription(create.columns_list->foreign_keys);
auto unique = InterpreterCreateQuery::getUniqueNotEnforcedDescription(create.columns_list->unique);
auto data_path = database->getTableDataPath(create);
table = StorageFactory::instance().get(
create, data_path, system_context, system_context->getGlobalContext(), columns, constraints, foreign_keys, unique, false);
database->attachTable(replica.table_name, table, data_path);
table->startup();
return table;
}
void InterpreterSystemQuery::restartReplicas(ContextMutablePtr system_context)
{
std::vector<StorageID> replica_names;
auto & catalog = DatabaseCatalog::instance();
for (auto & elem : catalog.getDatabases(getContext()))
for (auto it = elem.second->getTablesIterator(getContext()); it->isValid(); it->next())
if (dynamic_cast<const StorageReplicatedMergeTree *>(it->table().get()))
replica_names.emplace_back(it->databaseName(), it->name());
if (replica_names.empty())
return;
TableGuards guards;
for (const auto & name : replica_names)
guards.emplace(UniqueTableName{name.database_name, name.table_name}, nullptr);
for (auto & guard : guards)
guard.second = catalog.getDDLGuard(guard.first.database_name, guard.first.table_name);
ThreadPool pool(std::min(size_t(getNumberOfPhysicalCPUCores()), replica_names.size()));
for (auto & replica : replica_names)
{
LOG_TRACE(log, "Restarting replica on {}", replica.getNameForLogs());
pool.scheduleOrThrowOnError([&]() { tryRestartReplica(replica, system_context, false); });
}
pool.wait();
}
void InterpreterSystemQuery::dropReplica(ASTSystemQuery & query)
{
if (query.replica.empty())
throw Exception("Replica name is empty", ErrorCodes::BAD_ARGUMENTS);
if (!table_id.empty())
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_REPLICA, table_id);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
if (!dropReplicaImpl(query, table))
throw Exception(ErrorCodes::BAD_ARGUMENTS, table_is_not_replicated.data(), table_id.getNameForLogs());
}
else if (!query.database.empty())
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_REPLICA, query.database);
DatabasePtr database = DatabaseCatalog::instance().getDatabase(query.database, getContext());
for (auto iterator = database->getTablesIterator(getContext()); iterator->isValid(); iterator->next())
dropReplicaImpl(query, iterator->table());
LOG_TRACE(log, "Dropped replica {} from database {}", query.replica, backQuoteIfNeed(database->getDatabaseName()));
}
else if (query.is_drop_whole_replica)
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_REPLICA);
auto databases = DatabaseCatalog::instance().getDatabases(getContext());
for (auto & elem : databases)
{
DatabasePtr & database = elem.second;
for (auto iterator = database->getTablesIterator(getContext()); iterator->isValid(); iterator->next())
dropReplicaImpl(query, iterator->table());
LOG_TRACE(log, "Dropped replica {} from database {}", query.replica, backQuoteIfNeed(database->getDatabaseName()));
}
}
else if (!query.replica_zk_path.empty())
{
getContext()->checkAccess(AccessType::SYSTEM_DROP_REPLICA);
String remote_replica_path = fs::path(query.replica_zk_path) / "replicas" / query.replica;
/// This check is actually redundant, but it may prevent from some user mistakes
for (auto & elem : DatabaseCatalog::instance().getDatabases(getContext()))
{
DatabasePtr & database = elem.second;
for (auto iterator = database->getTablesIterator(getContext()); iterator->isValid(); iterator->next())
{
if (auto * storage_replicated = dynamic_cast<StorageReplicatedMergeTree *>(iterator->table().get()))
{
StorageReplicatedMergeTree::Status status;
storage_replicated->getStatus(status);
if (status.zookeeper_path == query.replica_zk_path)
throw Exception("There is a local table " + storage_replicated->getStorageID().getNameForLogs() +
", which has the same table path in ZooKeeper. Please check the path in query. "
"If you want to drop replica of this table, use `DROP TABLE` "
"or `SYSTEM DROP REPLICA 'name' FROM db.table`", ErrorCodes::TABLE_WAS_NOT_DROPPED);
}
}
}
auto zookeeper = getContext()->getZooKeeper();
bool looks_like_table_path = zookeeper->exists(query.replica_zk_path + "/replicas") ||
zookeeper->exists(query.replica_zk_path + "/dropped");
if (!looks_like_table_path)
throw Exception("Specified path " + query.replica_zk_path + " does not look like a table path",
ErrorCodes::TABLE_WAS_NOT_DROPPED);
if (zookeeper->exists(remote_replica_path + "/is_active"))
throw Exception("Can't remove replica: " + query.replica + ", because it's active",
ErrorCodes::TABLE_WAS_NOT_DROPPED);
StorageReplicatedMergeTree::dropReplica(zookeeper, query.replica_zk_path, query.replica, log);
LOG_INFO(log, "Dropped replica {}", remote_replica_path);
}
else
throw Exception("Invalid query", ErrorCodes::LOGICAL_ERROR);
}
bool InterpreterSystemQuery::dropReplicaImpl(ASTSystemQuery & query, const StoragePtr & table)
{
auto * storage_replicated = dynamic_cast<StorageReplicatedMergeTree *>(table.get());
if (!storage_replicated)
return false;
StorageReplicatedMergeTree::Status status;
auto zookeeper = getContext()->getZooKeeper();
storage_replicated->getStatus(status);
/// Do not allow to drop local replicas and active remote replicas
if (query.replica == status.replica_name)
throw Exception("We can't drop local replica, please use `DROP TABLE` "
"if you want to clean the data and drop this replica", ErrorCodes::TABLE_WAS_NOT_DROPPED);
/// NOTE it's not atomic: replica may become active after this check, but before dropReplica(...)
/// However, the main usecase is to drop dead replica, which cannot become active.
/// This check prevents only from accidental drop of some other replica.
if (zookeeper->exists(status.zookeeper_path + "/replicas/" + query.replica + "/is_active"))
throw Exception("Can't drop replica: " + query.replica + ", because it's active",
ErrorCodes::TABLE_WAS_NOT_DROPPED);
storage_replicated->dropReplica(zookeeper, status.zookeeper_path, query.replica, log);
LOG_TRACE(log, "Dropped replica {} of {}", query.replica, table->getStorageID().getNameForLogs());
return true;
}
void InterpreterSystemQuery::recalculateMetrics(ASTSystemQuery & query)
{
getContext()->checkAccess(AccessType::SYSTEM_RECALCULATE_METRICS, table_id);
auto mgr = getContext()->getPartCacheManager();
if (!mgr)
throw Exception("No PartCacheManager found", ErrorCodes::LOGICAL_ERROR);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
if (!table) {
throw Exception(ErrorCodes::UNKNOWN_TABLE, "Table {}.{} not found.", quoteString(query.database), quoteString(query.table));
}
mgr->forceRecalculate(table);
}
void InterpreterSystemQuery::syncReplica(ASTSystemQuery &)
{
getContext()->checkAccess(AccessType::SYSTEM_SYNC_REPLICA, table_id);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
if (auto * storage_replicated = dynamic_cast<StorageReplicatedMergeTree *>(table.get()))
{
LOG_TRACE(log, "Synchronizing entries in replica's queue with table's log and waiting for it to become empty");
if (!storage_replicated->waitForShrinkingQueueSize(0, getContext()->getSettingsRef().receive_timeout.totalMilliseconds()))
{
LOG_ERROR(log, "SYNC REPLICA {}: Timed out!", table_id.getNameForLogs());
throw Exception(
"SYNC REPLICA " + table_id.getNameForLogs() + ": command timed out! "
"See the 'receive_timeout' setting", ErrorCodes::TIMEOUT_EXCEEDED);
}
LOG_TRACE(log, "SYNC REPLICA {}: OK", table_id.getNameForLogs());
}
else
throw Exception(ErrorCodes::BAD_ARGUMENTS, table_is_not_replicated.data(), table_id.getNameForLogs());
}
void InterpreterSystemQuery::flushDistributed(ASTSystemQuery &)
{
getContext()->checkAccess(AccessType::SYSTEM_FLUSH_DISTRIBUTED, table_id);
if (auto * storage_distributed = dynamic_cast<StorageDistributed *>(DatabaseCatalog::instance().getTable(table_id, getContext()).get()))
storage_distributed->flushClusterNodesAllData(getContext());
else
throw Exception("Table " + table_id.getNameForLogs() + " is not distributed", ErrorCodes::BAD_ARGUMENTS);
}
void InterpreterSystemQuery::restartDisk(String & name)
{
getContext()->checkAccess(AccessType::SYSTEM_RESTART_DISK);
auto disk = getContext()->getDisk(name);
if (DiskRestartProxy * restart_proxy = dynamic_cast<DiskRestartProxy*>(disk.get()))
restart_proxy->restart();
else
throw Exception("Disk " + name + " doesn't have possibility to restart", ErrorCodes::BAD_ARGUMENTS);
}
void InterpreterSystemQuery::executeMetastoreCmd(ASTSystemQuery & query) const
{
switch (query.meta_ops.operation)
{
case MetastoreOperation::START_AUTO_SYNC:
getContext()->getGlobalContext()->setMetaCheckerStatus(false);
break;
case MetastoreOperation::STOP_AUTO_SYNC:
getContext()->getGlobalContext()->setMetaCheckerStatus(true);
break;
case MetastoreOperation::SYNC:
{
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
MergeTreeData * storage = dynamic_cast<MergeTreeData *>(table.get());
if (storage)
storage->syncMetaData();
break;
}
case MetastoreOperation::DROP_ALL_KEY:
/// TODO : implement later. directly remove all metadata for one table.
throw Exception("Not implemented yet. ", ErrorCodes::NOT_IMPLEMENTED);
case MetastoreOperation::DROP_BY_KEY:
{
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
MergeTreeData * storage = dynamic_cast<MergeTreeData *>(table.get());
if (!storage)
return;
if (auto metastore = storage->getMetastore())
{
if (!query.meta_ops.drop_key.empty())
metastore->dropMetaData(*storage, query.meta_ops.drop_key);
}
break;
}
default:
throw Exception("Unknown metastore operation.", ErrorCodes::LOGICAL_ERROR);
}
}
void InterpreterSystemQuery::executeCleanTrashTable(const ASTSystemQuery & query)
{
auto local_context = getContext();
// note: don't use table_id because it's not from trash
StorageID id(query.database, query.table, query.table_uuid);
if (id.database_name.empty())
id.database_name = local_context->getCurrentDatabase();
GlobalGCManager::systemCleanTrash(local_context, id, log);
}
void InterpreterSystemQuery::executeGc(const ASTSystemQuery & query)
{
auto local_context = getContext();
if (auto server_type = local_context->getServerType(); server_type != ServerType::cnch_server)
throw Exception("SYSTEM GC is only available on CNCH server", ErrorCodes::NOT_IMPLEMENTED);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
/// Try to forward query to the target server if needed
if (getContext()->getSettings().enable_auto_query_forwarding)
{
auto cnch_table_helper = CnchStorageCommonHelper(table->getStorageID(), table->getDatabaseName(), table->getTableName());
if (cnch_table_helper.forwardQueryToServerIfNeeded(getContext(), table->getStorageID()))
return;
}
CnchPartGCThread gc_thread(local_context, table->getStorageID());
gc_thread.executeManually(query.partition, local_context);
}
void InterpreterSystemQuery::executeCheckpoint(const ASTSystemQuery & )
{
auto local_context = getContext();
if (auto server_type = local_context->getServerType(); server_type != ServerType::cnch_server)
throw Exception("SYSTEM CHECKPOINT is only available on CNCH server", ErrorCodes::NOT_IMPLEMENTED);
auto storage = DatabaseCatalog::instance().getTable(table_id, local_context);
CnchManifestCheckpointThread checkpoint_thread(local_context, storage->getStorageID());
checkpoint_thread.executeManually();
}
void InterpreterSystemQuery::dedupWithHighPriority(const ASTSystemQuery & query)
{
if (getContext()->getServerType() != ServerType::cnch_server)
throw Exception("SYSTEM DEDUP WITH HIGH PRIORITY is only available on CNCH server", ErrorCodes::NOT_IMPLEMENTED);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
/// Try to forward query to the target server if needs to
if (getContext()->getSettings().enable_auto_query_forwarding)
{
auto cnch_table_helper = CnchStorageCommonHelper(table->getStorageID(), table->getDatabaseName(), table->getTableName());
if (cnch_table_helper.forwardQueryToServerIfNeeded(getContext(), table->getStorageID()))
return;
}
auto dedup_thread = getContext()->getCnchBGThreadsMap(CnchBGThread::DedupWorker)->tryGetThread(table->getStorageID());
if (auto dedup_worker_manager = dynamic_cast<DedupWorkerManager *>(dedup_thread.get()))
dedup_worker_manager->dedupWithHighPriority(query.partition, getContext());
}
void InterpreterSystemQuery::executeDedup(const ASTSystemQuery & query)
{
if (auto server_type = getContext()->getServerType(); server_type != ServerType::cnch_server && server_type != ServerType::cnch_worker)
throw Exception("SYSTEM DEDUP is only available on CNCH server or worker", ErrorCodes::NOT_IMPLEMENTED);
auto storage = DatabaseCatalog::instance().getTable(table_id, getContext());
if (auto * cnch_table = dynamic_cast<StorageCnchMergeTree *>(storage.get()))
cnch_table->executeDedupForRepair(query, getContext());
else
throw Exception(ErrorCodes::BAD_ARGUMENTS, "Table {} is not a CnchMergeTree", table_id.getNameForLogs());
}
void InterpreterSystemQuery::dumpCnchServerStatus()
{
auto context = getContext();
auto topology_master = context->getCnchTopologyMaster();
if (topology_master)
topology_master->dumpStatus();
}
void InterpreterSystemQuery::dropCnchMetaCache(bool skip_part_cache, bool skip_delete_bitmap_cache)
{
auto local_context = getContext();
if (local_context->getPartCacheManager())
{
auto storage = DatabaseCatalog::instance().getTable(table_id, local_context);
local_context->getPartCacheManager()->invalidPartAndDeleteBitmapCache(
storage->getStorageUUID(), skip_part_cache, skip_delete_bitmap_cache);
LOG_DEBUG(log, "Dropped cnch part cache of table {}", table_id.getNameForLogs());
}
}
void InterpreterSystemQuery::dropChecksumsCache(const StorageID & table_id) const
{
auto checksums_cache = getContext()->getChecksumsCache();
if (!checksums_cache)
return;
if (table_id.empty())
{
LOG_INFO(log, "Reset checksums cache.");
checksums_cache->reset();
}
else
{
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, getContext());
MergeTreeData * storage = dynamic_cast<MergeTreeData *>(table.get());
if (storage)
{
LOG_INFO(log, "Drop checksums cache for table {}", table_id.getFullNameNotQuoted());
checksums_cache->dropChecksumCache(storage->getStorageUniqueID());
}
}
}
void InterpreterSystemQuery::clearBrokenTables(ContextMutablePtr & ) const
{
const auto databases = DatabaseCatalog::instance().getDatabases(getContext());
for (const auto & elem : databases)
elem.second->clearBrokenTables();
}
AccessRightsElements InterpreterSystemQuery::getRequiredAccessForDDLOnCluster() const
{
const auto & query = query_ptr->as<const ASTSystemQuery &>();
using Type = ASTSystemQuery::Type;
AccessRightsElements required_access;
switch (query.type)
{
case Type::SHUTDOWN: [[fallthrough]];
case Type::KILL: [[fallthrough]];
case Type::SUSPEND:
{
required_access.emplace_back(AccessType::SYSTEM_SHUTDOWN);
break;
}
case Type::DROP_DNS_CACHE: [[fallthrough]];
case Type::DROP_MARK_CACHE: [[fallthrough]];
case Type::DROP_MMAP_CACHE: [[fallthrough]];
case Type::DROP_QUERY_CACHE:
[[fallthrough]];
case Type::DROP_CHECKSUMS_CACHE: [[fallthrough]];
#if USE_EMBEDDED_COMPILER
case Type::DROP_COMPILED_EXPRESSION_CACHE: [[fallthrough]];
#endif
case Type::DROP_NVM_CACHE: [[fallthrough]];
case Type::DROP_SCHEMA_CACHE: [[fallthrough]];
case Type::DROP_UNCOMPRESSED_CACHE:
{
required_access.emplace_back(AccessType::SYSTEM_DROP_CACHE);
break;
}
case Type::RELOAD_DICTIONARY: [[fallthrough]];
case Type::RELOAD_DICTIONARIES: [[fallthrough]];
case Type::RELOAD_EMBEDDED_DICTIONARIES:
{
required_access.emplace_back(AccessType::SYSTEM_RELOAD_DICTIONARY);
break;
}
case Type::RELOAD_MODEL: [[fallthrough]];
case Type::RELOAD_MODELS:
{
required_access.emplace_back(AccessType::SYSTEM_RELOAD_MODEL);
break;
}
case Type::RELOAD_CONFIG:
case Type::RELOAD_FORMAT_SCHEMA:
{
required_access.emplace_back(AccessType::SYSTEM_RELOAD_CONFIG);
break;
}
case Type::RELOAD_SYMBOLS:
{
required_access.emplace_back(AccessType::SYSTEM_RELOAD_SYMBOLS);
break;
}
case Type::STOP_MERGES: [[fallthrough]];
case Type::START_MERGES:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_MERGES);
else
required_access.emplace_back(AccessType::SYSTEM_MERGES, query.database, query.table);
break;
}
case Type::STOP_TTL_MERGES: [[fallthrough]];
case Type::START_TTL_MERGES:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_TTL_MERGES);
else
required_access.emplace_back(AccessType::SYSTEM_TTL_MERGES, query.database, query.table);
break;
}
case Type::STOP_MOVES: [[fallthrough]];
case Type::START_MOVES:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_MOVES);
else
required_access.emplace_back(AccessType::SYSTEM_MOVES, query.database, query.table);
break;
}
case Type::STOP_FETCHES: [[fallthrough]];
case Type::START_FETCHES:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_FETCHES);
else
required_access.emplace_back(AccessType::SYSTEM_FETCHES, query.database, query.table);
break;
}
case Type::STOP_DISTRIBUTED_SENDS: [[fallthrough]];
case Type::START_DISTRIBUTED_SENDS:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_DISTRIBUTED_SENDS);
else
required_access.emplace_back(AccessType::SYSTEM_DISTRIBUTED_SENDS, query.database, query.table);
break;
}
case Type::STOP_REPLICATED_SENDS: [[fallthrough]];
case Type::START_REPLICATED_SENDS:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_REPLICATED_SENDS);
else
required_access.emplace_back(AccessType::SYSTEM_REPLICATED_SENDS, query.database, query.table);
break;
}
case Type::STOP_REPLICATION_QUEUES: [[fallthrough]];
case Type::START_REPLICATION_QUEUES:
{
if (query.table.empty())
required_access.emplace_back(AccessType::SYSTEM_REPLICATION_QUEUES);
else
required_access.emplace_back(AccessType::SYSTEM_REPLICATION_QUEUES, query.database, query.table);
break;
}
case Type::DROP_REPLICA:
{
required_access.emplace_back(AccessType::SYSTEM_DROP_REPLICA, query.database, query.table);
break;
}
case Type::RESTORE_REPLICA:
{
required_access.emplace_back(AccessType::SYSTEM_RESTORE_REPLICA, query.database, query.table);
break;
}
case Type::SYNC_REPLICA:
{
required_access.emplace_back(AccessType::SYSTEM_SYNC_REPLICA, query.database, query.table);
break;
}
case Type::RESTART_REPLICA:
{
required_access.emplace_back(AccessType::SYSTEM_RESTART_REPLICA, query.database, query.table);
break;
}
case Type::RESTART_REPLICAS:
{
required_access.emplace_back(AccessType::SYSTEM_RESTART_REPLICA);
break;
}
case Type::RECALCULATE_METRICS:
{
required_access.emplace_back(AccessType::SYSTEM_RECALCULATE_METRICS, query.database, query.table);
break;
}
case Type::FLUSH_DISTRIBUTED:
{
required_access.emplace_back(AccessType::SYSTEM_FLUSH_DISTRIBUTED, query.database, query.table);
break;
}
case Type::FLUSH_LOGS:
{
required_access.emplace_back(AccessType::SYSTEM_FLUSH_LOGS);
break;
}
case Type::RESTART_DISK:
{
required_access.emplace_back(AccessType::SYSTEM_RESTART_DISK);
break;
}
case Type::METASTORE:
case Type::CLEAR_BROKEN_TABLES:
/// TODO:
break;
case Type::START_CONSUME: [[fallthrough]];
case Type::STOP_CONSUME: [[fallthrough]];
case Type::DROP_CONSUME: [[fallthrough]];
case Type::RESTART_CONSUME:
{
required_access.emplace_back(AccessType::SYSTEM_CONSUME, query.database, query.table);
break;
}
case Type::FETCH_PARTS:
{
required_access.emplace_back(AccessType::INSERT, query.database, query.table);
break;
}
case Type::STOP_LISTEN_QUERIES: break;
case Type::START_LISTEN_QUERIES: break;
// FIXME(xuruiliang): fix for resource group
case Type::START_RESOURCE_GROUP: break;
case Type::STOP_RESOURCE_GROUP: break;
case Type::DEDUP: break;
case Type::UNKNOWN: break;
case Type::END: break;
default:
break;
}
return required_access;
}
void InterpreterSystemQuery::extendQueryLogElemImpl(QueryLogElement & elem, const ASTPtr & /*ast*/, ContextPtr) const
{
elem.query_kind = "System";
}
void InterpreterSystemQuery::fetchParts(const ASTSystemQuery & query, const StorageID & table_id, ContextPtr local_context)
{
if (table_id.empty())
throw Exception("Database and table must be specified when fetch parts from remote.", ErrorCodes::LOGICAL_ERROR);
StoragePtr table = DatabaseCatalog::instance().getTable(table_id, local_context);
auto merge_tree_storage = dynamic_cast<MergeTreeData *>(table.get());
if (!merge_tree_storage)
throw Exception("FetchParts only support MergeTree family, but got " + table->getName(), ErrorCodes::LOGICAL_ERROR);
String hdfs_base = query.target_path->as<ASTLiteral &>().value.safeGet<String>();
String prefix, fuzzyname;
size_t pos = hdfs_base.find_last_of('/');
if (pos == hdfs_base.length() - 1)
{
size_t lpos = hdfs_base.rfind('/', pos - 1);
prefix = hdfs_base.substr(0, lpos + 1);
fuzzyname = hdfs_base.substr(lpos + 1, pos - lpos - 1);
}
else
{
prefix = hdfs_base.substr(0, pos + 1);
fuzzyname = hdfs_base.substr(pos + 1);
}
/// hard code max subdir size
std::vector<String> matched = parseDescription(fuzzyname, 0, fuzzyname.length(), ',', 100);
auto disks = merge_tree_storage->getDisksByType(DiskType::Type::Local);
if (disks.empty())
throw Exception("Cannot fetch parts to storage with no local disk.", ErrorCodes::LOGICAL_ERROR);
Poco::UUIDGenerator & generator = Poco::UUIDGenerator::defaultGenerator();
HDFSDumper dumper(getContext()->getHdfsUser(), getContext()->getHdfsNNProxy());
for (auto const & remote_dir : matched)
{
String remote_path = prefix + remote_dir + "/";
String part_relative_path = "detached/" + generator.createRandom().toString() + "/";
SCOPE_EXIT(
{
// clean tmp directory, which is created during fetching part from remote
for (const auto & disk: disks)
{
Poco::File local_tmp_path(fullPath(disk, fs::path(merge_tree_storage->getRelativeDataPath(IStorage::StorageLocation::MAIN)) / part_relative_path));
local_tmp_path.remove(true);
}
});
/// There may have network exceptions when fetching parts from remote, just try again it happens.
std::vector<std::pair<String, DiskPtr>> fetched;
int max_retry = 2;
while (max_retry)
{
try
{
fetched = dumper.fetchPartsFromRemote(disks, remote_path, fs::path(merge_tree_storage->getRelativeDataPath(IStorage::StorageLocation::MAIN)) / part_relative_path);
break;
}
catch (Exception & e)
{
if (--max_retry)
{
LOG_DEBUG(log, "Failed to fetch from remote, error : {}, try again", e.message());
}
else
throw;
}
}
// attach fetched part
merge_tree_storage->attachPartsInDirectory(fetched, part_relative_path, local_context);
}
}
namespace
{
template<typename T>
void executeActionOnCNCHLogImpl(std::shared_ptr<T> cnch_log, ASTSystemQuery::Type type, const String & table_name , LoggerPtr log)
{
using Type = ASTSystemQuery::Type;
if (cnch_log)
{
switch(type)
{
case Type::FLUSH_CNCH_LOG:
cnch_log->flush(true);
LOG_INFO(log, "flush cnch log for {}", table_name);
break;
case Type::STOP_CNCH_LOG:
cnch_log->stop();
LOG_INFO(log, "stop cnch log for {}", table_name);
break;
case Type::RESUME_CNCH_LOG:
cnch_log->resume();
LOG_INFO(log, "resume cnch log for {}", table_name);
break;
default:
throw Exception("invalid action on log", ErrorCodes::LOGICAL_ERROR);
}
}
}
}
void InterpreterSystemQuery::executeActionOnCNCHLog(const String & table_name, ASTSystemQuery::Type type)
{
if (table_name == CNCH_SYSTEM_LOG_KAFKA_LOG_TABLE_NAME)
executeActionOnCNCHLogImpl(getContext()->getCloudKafkaLog(), type, table_name, log);
else if (table_name == CNCH_SYSTEM_LOG_MATERIALIZED_MYSQL_LOG_TABLE_NAME)
executeActionOnCNCHLogImpl(getContext()->getCloudMaterializedMySQLLog(), type, table_name, log);
else if (table_name == CNCH_SYSTEM_LOG_UNIQUE_TABLE_LOG_TABLE_NAME)
executeActionOnCNCHLogImpl(getContext()->getCloudUniqueTableLog(), type, table_name, log);
else if (table_name == CNCH_SYSTEM_LOG_QUERY_LOG_TABLE_NAME)
executeActionOnCNCHLogImpl(getContext()->getCnchQueryLog(), type, table_name, log);
else if (table_name == CNCH_SYSTEM_LOG_VIEW_REFRESH_TASK_LOG_TABLE_NAME)
executeActionOnCNCHLogImpl(getContext()->getViewRefreshTaskLog(), type, table_name, log);
else
throw Exception(ErrorCodes::BAD_ARGUMENTS,
"there is no log corresponding to table name {}, available names are {}, {}, {}, {}, {}",
table_name,
CNCH_SYSTEM_LOG_KAFKA_LOG_TABLE_NAME,
CNCH_SYSTEM_LOG_MATERIALIZED_MYSQL_LOG_TABLE_NAME,
CNCH_SYSTEM_LOG_UNIQUE_TABLE_LOG_TABLE_NAME,
CNCH_SYSTEM_LOG_QUERY_LOG_TABLE_NAME,
CNCH_SYSTEM_LOG_VIEW_REFRESH_TASK_LOG_TABLE_NAME);
}
void InterpreterSystemQuery::cleanTransaction(UInt64 txn_id)
{
/// similar to daemon manager implementation
TxnTimestamp current_time = getContext()->getTimestamp();
auto catalog = getContext()->getCnchCatalog();
auto & server_pool = getContext()->getCnchServerClientPool();
const UInt64 safe_remove_interval = getContext()->getConfigRef().getInt("cnch_txn_safe_remove_seconds", 5 * 60); // default 5 min
auto txn_record = catalog->getTransactionRecord(txn_id);
try
{
auto client = server_pool.tryGetByRPCAddress(txn_record.location());
bool server_exists = static_cast<bool>(client);
if (!client)
client = server_pool.get();
LOG_TRACE(
log,
"Select server ({}) for txn {}, stats: {}, coordinator location: {}", client->getRPCAddress(), txn_record.txnID(), txnStatusToString(txn_record.status()), txn_record.location());
switch (txn_record.status())
{
case CnchTransactionStatus::Aborted:
{
client->cleanTransaction(txn_record);
break;
}
case CnchTransactionStatus::Finished:
{
if (!txn_record.cleanTs())
{
if (txn_record.hasMainTableUUID())
{
auto table = getContext()->getCnchCatalog()->tryGetTableByUUID(*getContext(), UUIDHelpers::UUIDToString(txn_record.mainTableUUID()), txn_record.txnID());
auto server_vw_name = table ? table->getStorageID().server_vw_name : "server_vw_default";
auto host_port = getContext()->getCnchTopologyMaster()->getTargetServer(
UUIDHelpers::UUIDToString(txn_record.mainTableUUID()), server_vw_name, false);
client = server_pool.get(host_port);
}
client->cleanTransaction(txn_record);
}
else if (current_time.toSecond() - txn_record.cleanTs().toSecond() > safe_remove_interval) {
catalog->removeTransactionRecord(txn_record);
}
break;
}
case CnchTransactionStatus::Running:
{
if (!server_exists)
{
client->cleanTransaction(txn_record);
}
else if (client->getTransactionStatus(txn_record.txnID()) == CnchTransactionStatus::Inactive)
{
client->cleanTransaction(txn_record);
}
break;
}
default:
throw Exception("Invalid status received", ErrorCodes::LOGICAL_ERROR);
}
}
catch (...)
{
tryLogCurrentException(log, __PRETTY_FUNCTION__);
}
}
void InterpreterSystemQuery::cleanFilesystemLock()
{
auto lock_records = getContext()->getCnchCatalog()->getAllFilesysLock();
for (const auto & record : lock_records)
{
cleanTransaction(record.txn_id());
}
}
void InterpreterSystemQuery::lockMemoryLock(const ASTSystemQuery & query, const StorageID & table_id, ContextPtr local_context)
{
/// SYSTEM LOCK MEMORY LOCK db.tb PARTITON '2012-01-01' FOR 4 SECONDS TASK_DOMAIN
auto & txn_coordinator = local_context->getCnchTransactionCoordinator();
auto transaction = txn_coordinator.createTransaction(
CreateTransactionOption().setInitiator(CnchTransactionInitiator::Merge).setPriority(CnchTransactionPriority::low));
SCOPE_EXIT({
try
{
txn_coordinator.finishTransaction(transaction);
}
catch (...)
{
tryLogCurrentException(log, __PRETTY_FUNCTION__);
}
});
StoragePtr storage = local_context->getCnchCatalog()->tryGetTable(*local_context, table_id.database_name, table_id.table_name);
if (!storage)
throw Exception("Failed to get StoragePtr for table", ErrorCodes::BAD_ARGUMENTS);
auto * merge_tree = dynamic_cast<StorageCnchMergeTree *>(storage.get());
if (!merge_tree)
throw Exception("storage is not merge tree table", ErrorCodes::LOGICAL_ERROR);
String partition_id = merge_tree->getPartitionIDFromQuery(query.partition, local_context);
LOG_DEBUG(log, "execute lock Memory lock on partition_id {} on table {} for {} s with string data {}", partition_id, table_id.getFullTableName(), query.seconds, query.string_data);
TxnTimestamp txn_id = transaction->getTransactionID();
LockInfoPtr partition_lock = std::make_shared<LockInfo>(txn_id);
partition_lock->setMode(LockMode::X);
partition_lock->setTimeout(1000); //1 seconds
partition_lock->setPartition(partition_id);
partition_lock->setUUIDAndPrefix(storage->getStorageUUID(), query.string_data.empty() ? LockInfo::default_domain : LockInfo::task_domain);
Stopwatch lock_watch;
auto cnch_lock = std::make_shared<CnchLockHolder>(local_context, std::move(partition_lock));
cnch_lock->lock();
LOG_DEBUG(log, "Acquired lock in {} ms", lock_watch.elapsedMilliseconds());
sleepForSeconds(query.seconds);
}
void InterpreterSystemQuery::releaseMemoryLock(const ASTSystemQuery & query, const StorageID & table_id, ContextPtr local_context)
{
if (query.specify_txn)
{
/// SYSTEM RELEASE MEMORY LOCK OF TXN xxx;
LockManager::instance().releaseLocksForTxn(query.txn_id, *local_context);
}
else
{
/// SYSTEM RELEASE MEMORY LOCK db.table;
auto storage = DatabaseCatalog::instance().getTable(table_id, local_context);
if (!dynamic_cast<StorageCnchMergeTree *>(storage.get()))
throw Exception("StorageCnchMergeTree is expected, but got " + storage->getName(), ErrorCodes::BAD_ARGUMENTS);
LockManager::instance().releaseLocksForTable(storage->getCnchStorageID(), *local_context);
}
}
void InterpreterSystemQuery::triggerHDFSConfigUpdate()
{
// only for internal use
// HDFSConfigManager::instance().updateAll(true);
}
}
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