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PrestoServer.cpp
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PrestoServer.cpp
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/*
* 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.
*/
#include "presto_cpp/main/PrestoServer.h"
#include <boost/asio/io_service.hpp>
#include <boost/asio/ip/host_name.hpp>
#include <boost/asio/ip/tcp.hpp>
#include <glog/logging.h>
#include "presto_cpp/main/Announcer.h"
#include "presto_cpp/main/CoordinatorDiscoverer.h"
#include "presto_cpp/main/PeriodicMemoryChecker.h"
#include "presto_cpp/main/PeriodicTaskManager.h"
#include "presto_cpp/main/SignalHandler.h"
#include "presto_cpp/main/SystemConnector.h"
#include "presto_cpp/main/TaskResource.h"
#include "presto_cpp/main/common/ConfigReader.h"
#include "presto_cpp/main/common/Counters.h"
#include "presto_cpp/main/common/Utils.h"
#include "presto_cpp/main/http/filters/AccessLogFilter.h"
#include "presto_cpp/main/http/filters/HttpEndpointLatencyFilter.h"
#include "presto_cpp/main/http/filters/InternalAuthenticationFilter.h"
#include "presto_cpp/main/http/filters/StatsFilter.h"
#include "presto_cpp/main/operators/BroadcastExchangeSource.h"
#include "presto_cpp/main/operators/BroadcastWrite.h"
#include "presto_cpp/main/operators/LocalPersistentShuffle.h"
#include "presto_cpp/main/operators/PartitionAndSerialize.h"
#include "presto_cpp/main/operators/ShuffleRead.h"
#include "presto_cpp/main/operators/UnsafeRowExchangeSource.h"
#include "presto_cpp/main/types/FunctionMetadata.h"
#include "presto_cpp/main/types/PrestoToVeloxQueryPlan.h"
#include "velox/common/base/Counters.h"
#include "velox/common/base/StatsReporter.h"
#include "velox/common/caching/CacheTTLController.h"
#include "velox/common/caching/SsdCache.h"
#include "velox/common/file/FileSystems.h"
#include "velox/common/memory/MmapAllocator.h"
#include "velox/common/memory/SharedArbitrator.h"
#include "velox/connectors/Connector.h"
#include "velox/connectors/hive/HiveConnector.h"
#include "velox/connectors/hive/HiveDataSink.h"
#include "velox/connectors/hive/storage_adapters/abfs/RegisterAbfsFileSystem.h"
#ifdef VELOX_ENABLE_FORWARD_COMPATIBILITY
#include "velox/connectors/hive/storage_adapters/gcs/RegisterGcsFileSystem.h"
#else
#include "velox/connectors/hive/storage_adapters/gcs/RegisterGCSFileSystem.h"
#endif
#include "velox/connectors/hive/storage_adapters/hdfs/RegisterHdfsFileSystem.h"
#include "velox/connectors/hive/storage_adapters/s3fs/RegisterS3FileSystem.h"
#include "velox/connectors/tpch/TpchConnector.h"
#include "velox/dwio/dwrf/RegisterDwrfReader.h"
#include "velox/dwio/dwrf/RegisterDwrfWriter.h"
#include "velox/dwio/parquet/RegisterParquetReader.h"
#include "velox/dwio/parquet/RegisterParquetWriter.h"
#include "velox/exec/OutputBufferManager.h"
#include "velox/functions/prestosql/aggregates/RegisterAggregateFunctions.h"
#include "velox/functions/prestosql/registration/RegistrationFunctions.h"
#include "velox/functions/prestosql/window/WindowFunctionsRegistration.h"
#include "velox/serializers/CompactRowSerializer.h"
#include "velox/serializers/PrestoSerializer.h"
#include "velox/serializers/UnsafeRowSerializer.h"
#ifdef PRESTO_ENABLE_REMOTE_FUNCTIONS
#include "presto_cpp/main/RemoteFunctionRegisterer.h"
#endif
#ifdef __linux__
// Required by BatchThreadFactory
#include <pthread.h>
#include <sched.h>
#endif
using namespace facebook::velox;
namespace facebook::presto {
namespace {
constexpr char const* kHttp = "http";
constexpr char const* kHttps = "https";
constexpr char const* kTaskUriFormat =
"{}://{}:{}"; // protocol, address and port
constexpr char const* kConnectorName = "connector.name";
constexpr char const* kHiveHadoop2ConnectorName = "hive-hadoop2";
protocol::NodeState convertNodeState(presto::NodeState nodeState) {
switch (nodeState) {
case presto::NodeState::kActive:
return protocol::NodeState::ACTIVE;
case presto::NodeState::kInActive:
return protocol::NodeState::INACTIVE;
case presto::NodeState::kShuttingDown:
return protocol::NodeState::SHUTTING_DOWN;
}
return protocol::NodeState::ACTIVE; // For gcc build.
}
void enableChecksum() {
velox::exec::OutputBufferManager::getInstance().lock()->setListenerFactory(
[]() {
return std::make_unique<
serializer::presto::PrestoOutputStreamListener>();
});
}
std::string stringifyConnectorConfig(
const std::unordered_map<std::string, std::string>& configs) {
std::stringstream out;
for (auto const& [key, value] : configs) {
out << " " << key << "=" << value << "\n";
}
return out.str();
}
bool isCacheTtlEnabled() {
const auto* systemConfig = SystemConfig::instance();
if (systemConfig->cacheVeloxTtlEnabled()) {
VELOX_USER_CHECK(
systemConfig->cacheVeloxTtlThreshold() > std::chrono::seconds::zero(),
"Config cache.velox.ttl-threshold must be positive.");
VELOX_USER_CHECK(
systemConfig->cacheVeloxTtlCheckInterval() >
std::chrono::seconds::zero(),
"Config cache.velox.ttl-check-interval must be positive.");
return true;
}
return false;
}
bool cachePeriodicPersistenceEnabled() {
const auto* systemConfig = SystemConfig::instance();
return systemConfig->asyncDataCacheEnabled() &&
systemConfig->asyncCacheSsdGb() > 0 &&
systemConfig->asyncCachePersistenceInterval() >
std::chrono::seconds::zero();
}
} // namespace
std::string nodeState2String(NodeState nodeState) {
switch (nodeState) {
case presto::NodeState::kActive:
return "active";
case presto::NodeState::kInActive:
return "inactive";
case presto::NodeState::kShuttingDown:
return "shutting_down";
}
return fmt::format("<unknown>:{}>", static_cast<int>(nodeState));
}
PrestoServer::PrestoServer(const std::string& configDirectoryPath)
: configDirectoryPath_(configDirectoryPath),
signalHandler_(std::make_unique<SignalHandler>(this)),
start_(std::chrono::steady_clock::now()),
memoryInfo_(std::make_unique<protocol::MemoryInfo>()) {}
PrestoServer::~PrestoServer() {}
void PrestoServer::run() {
auto systemConfig = SystemConfig::instance();
auto nodeConfig = NodeConfig::instance();
auto baseVeloxQueryConfig = BaseVeloxQueryConfig::instance();
int httpPort{0};
std::string certPath;
std::string keyPath;
std::string ciphers;
std::string clientCertAndKeyPath;
std::optional<int> httpsPort;
try {
// Allow registering extra config properties before we load them from files.
registerExtraConfigProperties();
systemConfig->initialize(
fmt::format("{}/config.properties", configDirectoryPath_));
nodeConfig->initialize(
fmt::format("{}/node.properties", configDirectoryPath_));
// velox.properties is optional.
baseVeloxQueryConfig->initialize(
fmt::format("{}/velox.properties", configDirectoryPath_), true);
httpPort = systemConfig->httpServerHttpPort();
if (systemConfig->httpServerHttpsEnabled()) {
httpsPort = systemConfig->httpServerHttpsPort();
ciphers = systemConfig->httpsSupportedCiphers();
if (ciphers.empty()) {
VELOX_USER_FAIL("Https is enabled without ciphers");
}
auto optionalCertPath = systemConfig->httpsCertPath();
if (!optionalCertPath.has_value()) {
VELOX_USER_FAIL("Https is enabled without certificate path");
}
certPath = optionalCertPath.value();
auto optionalKeyPath = systemConfig->httpsKeyPath();
if (!optionalKeyPath.has_value()) {
VELOX_USER_FAIL("Https is enabled without key path");
}
keyPath = optionalKeyPath.value();
auto optionalClientCertPath = systemConfig->httpsClientCertAndKeyPath();
if (!optionalClientCertPath.has_value()) {
// This config is not used in server but validated here, otherwise, it
// will fail later in the HttpClient during query execution.
VELOX_USER_FAIL(
"Https Client Certificates are not configured correctly");
}
sslContext_ =
util::createSSLContext(optionalClientCertPath.value(), ciphers);
}
if (systemConfig->internalCommunicationJwtEnabled()) {
#ifndef PRESTO_ENABLE_JWT
VELOX_USER_FAIL("Internal JWT is enabled but not supported");
#endif
VELOX_USER_CHECK(
!(systemConfig->internalCommunicationSharedSecret().empty()),
"Internal JWT is enabled without a corresponding shared secret");
}
nodeVersion_ = systemConfig->prestoVersion();
environment_ = nodeConfig->nodeEnvironment();
nodeId_ = nodeConfig->nodeId();
address_ = nodeConfig->nodeInternalAddress(
std::bind(&PrestoServer::getLocalIp, this));
// Add [] to an ipv6 address.
if (address_.find(':') != std::string::npos && address_.front() != '[') {
address_ = fmt::format("[{}]", address_);
}
nodeLocation_ = nodeConfig->nodeLocation();
} catch (const VeloxUserError& e) {
PRESTO_STARTUP_LOG(ERROR) << "Failed to start server due to " << e.what();
exit(EXIT_FAILURE);
}
registerFileSinks();
registerFileSystems();
registerFileReadersAndWriters();
registerMemoryArbitrators();
registerShuffleInterfaceFactories();
registerCustomOperators();
registerConnectorFactories();
// Register Velox connector factory for iceberg.
// The iceberg catalog is handled by the hive connector factory.
connector::registerConnectorFactory(
std::make_shared<connector::hive::HiveConnectorFactory>("iceberg"));
registerPrestoToVeloxConnector(
std::make_unique<HivePrestoToVeloxConnector>("hive"));
registerPrestoToVeloxConnector(
std::make_unique<HivePrestoToVeloxConnector>("hive-hadoop2"));
registerPrestoToVeloxConnector(
std::make_unique<IcebergPrestoToVeloxConnector>("iceberg"));
registerPrestoToVeloxConnector(
std::make_unique<TpchPrestoToVeloxConnector>("tpch"));
// Presto server uses system catalog or system schema in other catalogs
// in different places in the code. All these resolve to the SystemConnector.
// Depending on where the operator or column is used, different prefixes can
// be used in the naming. So the protocol class is mapped
// to all the different prefixes for System tables/columns.
registerPrestoToVeloxConnector(
std::make_unique<SystemPrestoToVeloxConnector>("$system"));
registerPrestoToVeloxConnector(
std::make_unique<SystemPrestoToVeloxConnector>("system"));
registerPrestoToVeloxConnector(
std::make_unique<SystemPrestoToVeloxConnector>("$system@system"));
initializeVeloxMemory();
initializeThreadPools();
auto catalogNames = registerConnectors(fs::path(configDirectoryPath_));
const bool bindToNodeInternalAddressOnly =
systemConfig->httpServerBindToNodeInternalAddressOnlyEnabled();
folly::SocketAddress httpSocketAddress;
if (bindToNodeInternalAddressOnly) {
httpSocketAddress.setFromHostPort(address_, httpPort);
} else {
httpSocketAddress.setFromLocalPort(httpPort);
}
PRESTO_STARTUP_LOG(INFO) << fmt::format(
"Starting server at {}:{} ({})",
httpSocketAddress.getIPAddress().str(),
httpPort,
address_);
initializeCoordinatorDiscoverer();
if (coordinatorDiscoverer_ != nullptr) {
announcer_ = std::make_unique<Announcer>(
address_,
httpsPort.has_value(),
httpsPort.has_value() ? httpsPort.value() : httpPort,
coordinatorDiscoverer_,
nodeVersion_,
environment_,
nodeId_,
nodeLocation_,
systemConfig->prestoNativeSidecar(),
catalogNames,
systemConfig->announcementMaxFrequencyMs(),
sslContext_);
updateAnnouncerDetails();
announcer_->start();
uint64_t heartbeatFrequencyMs = systemConfig->heartbeatFrequencyMs();
if (heartbeatFrequencyMs > 0) {
heartbeatManager_ = std::make_unique<PeriodicHeartbeatManager>(
address_,
httpsPort.has_value() ? httpsPort.value() : httpPort,
coordinatorDiscoverer_,
sslContext_,
[server = this]() { return server->fetchNodeStatus(); },
heartbeatFrequencyMs);
heartbeatManager_->start();
}
}
const bool reusePort = SystemConfig::instance()->httpServerReusePort();
auto httpConfig =
std::make_unique<http::HttpConfig>(httpSocketAddress, reusePort);
std::unique_ptr<http::HttpsConfig> httpsConfig;
if (httpsPort.has_value()) {
folly::SocketAddress httpsSocketAddress;
if (bindToNodeInternalAddressOnly) {
httpsSocketAddress.setFromHostPort(address_, httpsPort.value());
} else {
httpsSocketAddress.setFromLocalPort(httpsPort.value());
}
httpsConfig = std::make_unique<http::HttpsConfig>(
httpsSocketAddress, certPath, keyPath, ciphers, reusePort);
}
httpServer_ = std::make_unique<http::HttpServer>(
httpSrvIoExecutor_, std::move(httpConfig), std::move(httpsConfig));
httpServer_->registerPost(
"/v1/memory",
[server = this](
proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
server->reportMemoryInfo(downstream);
});
httpServer_->registerGet(
"/v1/info",
[server = this](
proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
server->reportServerInfo(downstream);
});
httpServer_->registerGet(
"/v1/info/state",
[server = this](
proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
json infoStateJson = convertNodeState(server->nodeState());
http::sendOkResponse(downstream, infoStateJson);
});
httpServer_->registerGet(
"/v1/status",
[server = this](
proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
server->reportNodeStatus(downstream);
});
httpServer_->registerHead(
"/v1/status",
[](proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
proxygen::ResponseBuilder(downstream)
.status(http::kHttpOk, "OK")
.header(
proxygen::HTTP_HEADER_CONTENT_TYPE,
http::kMimeTypeApplicationJson)
.sendWithEOM();
});
if (systemConfig->enableRuntimeMetricsCollection()) {
enableWorkerStatsReporting();
if (folly::Singleton<velox::BaseStatsReporter>::try_get()) {
httpServer_->registerGet(
"/v1/info/metrics",
[](proxygen::HTTPMessage* /*message*/,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
http::sendOkResponse(
downstream,
folly::Singleton<velox::BaseStatsReporter>::try_get()
->fetchMetrics());
});
}
}
registerFunctions();
registerRemoteFunctions();
registerVectorSerdes();
registerPrestoPlanNodeSerDe();
const auto numExchangeHttpClientIoThreads = std::max<size_t>(
systemConfig->exchangeHttpClientNumIoThreadsHwMultiplier() *
std::thread::hardware_concurrency(),
1);
exchangeHttpIoExecutor_ = std::make_shared<folly::IOThreadPoolExecutor>(
numExchangeHttpClientIoThreads,
std::make_shared<folly::NamedThreadFactory>("ExchangeIO"));
PRESTO_STARTUP_LOG(INFO) << "Exchange Http IO executor '"
<< exchangeHttpIoExecutor_->getName() << "' has "
<< exchangeHttpIoExecutor_->numThreads()
<< " threads.";
const auto numExchangeHttpClientCpuThreads = std::max<size_t>(
systemConfig->exchangeHttpClientNumCpuThreadsHwMultiplier() *
std::thread::hardware_concurrency(),
1);
exchangeHttpCpuExecutor_ = std::make_shared<folly::CPUThreadPoolExecutor>(
numExchangeHttpClientCpuThreads,
std::make_shared<folly::NamedThreadFactory>("ExchangeCPU"));
PRESTO_STARTUP_LOG(INFO) << "Exchange Http CPU executor '"
<< exchangeHttpCpuExecutor_->getName() << "' has "
<< exchangeHttpCpuExecutor_->numThreads()
<< " threads.";
if (systemConfig->exchangeEnableConnectionPool()) {
PRESTO_STARTUP_LOG(INFO) << "Enable exchange Http Client connection pool.";
exchangeSourceConnectionPool_ =
std::make_unique<http::HttpClientConnectionPool>();
}
facebook::velox::exec::ExchangeSource::registerFactory(
[this](
const std::string& taskId,
int destination,
std::shared_ptr<velox::exec::ExchangeQueue> queue,
memory::MemoryPool* pool) {
return PrestoExchangeSource::create(
taskId,
destination,
queue,
pool,
exchangeHttpCpuExecutor_.get(),
exchangeHttpIoExecutor_.get(),
exchangeSourceConnectionPool_.get(),
sslContext_);
});
facebook::velox::exec::ExchangeSource::registerFactory(
operators::UnsafeRowExchangeSource::createExchangeSource);
// Batch broadcast exchange source.
facebook::velox::exec::ExchangeSource::registerFactory(
operators::BroadcastExchangeSource::createExchangeSource);
pool_ =
velox::memory::MemoryManager::getInstance()->addLeafPool("PrestoServer");
taskManager_ = std::make_unique<TaskManager>(
driverExecutor_.get(), httpSrvCpuExecutor_.get(), spillerExecutor_.get());
if (systemConfig->prestoNativeSidecar()) {
registerSidecarEndpoints();
}
std::string taskUri;
if (httpsPort.has_value()) {
taskUri = fmt::format(kTaskUriFormat, kHttps, address_, httpsPort.value());
} else {
taskUri = fmt::format(kTaskUriFormat, kHttp, address_, httpPort);
}
taskManager_->setBaseUri(taskUri);
taskManager_->setNodeId(nodeId_);
taskManager_->setOldTaskCleanUpMs(systemConfig->oldTaskCleanUpMs());
auto baseSpillDirectory = getBaseSpillDirectory();
if (!baseSpillDirectory.empty()) {
taskManager_->setBaseSpillDirectory(baseSpillDirectory);
PRESTO_STARTUP_LOG(INFO)
<< "Spilling root directory: " << baseSpillDirectory;
}
initVeloxPlanValidator();
taskResource_ = std::make_unique<TaskResource>(
pool_.get(),
httpSrvCpuExecutor_.get(),
getVeloxPlanValidator(),
*taskManager_);
taskResource_->registerUris(*httpServer_);
if (systemConfig->enableSerializedPageChecksum()) {
enableChecksum();
}
if (systemConfig->enableVeloxTaskLogging()) {
if (auto listener = getTaskListener()) {
exec::registerTaskListener(listener);
}
}
if (systemConfig->enableVeloxExprSetLogging()) {
if (auto listener = getExprSetListener()) {
exec::registerExprSetListener(listener);
}
}
prestoServerOperations_ =
std::make_unique<PrestoServerOperations>(taskManager_.get(), this);
registerSystemConnector();
// The endpoint used by operation in production.
httpServer_->registerGet(
"/v1/operation/.*",
[this](
proxygen::HTTPMessage* message,
const std::vector<std::unique_ptr<folly::IOBuf>>& /*body*/,
proxygen::ResponseHandler* downstream) {
prestoServerOperations_->runOperation(message, downstream);
});
PRESTO_STARTUP_LOG(INFO) << "Driver CPU executor '"
<< driverExecutor_->getName() << "' has "
<< driverExecutor_->numThreads() << " threads.";
if (httpServer_->getExecutor()) {
PRESTO_STARTUP_LOG(INFO)
<< "HTTP Server IO executor '" << httpServer_->getExecutor()->getName()
<< "' has " << httpServer_->getExecutor()->numThreads() << " threads.";
}
if (httpSrvCpuExecutor_ != nullptr) {
PRESTO_STARTUP_LOG(INFO)
<< "HTTP Server CPU executor '" << httpSrvCpuExecutor_->getName()
<< "' has " << httpSrvCpuExecutor_->numThreads() << " threads.";
}
if (spillerExecutor_ != nullptr) {
PRESTO_STARTUP_LOG(INFO)
<< "Spiller CPU executor '" << spillerExecutor_->getName() << "', has "
<< spillerExecutor_->numThreads() << " threads.";
} else {
PRESTO_STARTUP_LOG(INFO) << "Spill executor was not configured.";
}
PRESTO_STARTUP_LOG(INFO) << "Starting all periodic tasks";
auto* memoryAllocator = velox::memory::memoryManager()->allocator();
auto* asyncDataCache = cache::AsyncDataCache::getInstance();
periodicTaskManager_ = std::make_unique<PeriodicTaskManager>(
driverExecutor_.get(),
spillerExecutor_.get(),
httpSrvIoExecutor_.get(),
httpSrvCpuExecutor_.get(),
exchangeHttpIoExecutor_.get(),
exchangeHttpCpuExecutor_.get(),
taskManager_.get(),
memoryAllocator,
asyncDataCache,
velox::connector::getAllConnectors(),
this);
addServerPeriodicTasks();
addAdditionalPeriodicTasks();
periodicTaskManager_->start();
addMemoryCheckerPeriodicTask();
// Start everything. After the return from the following call we are shutting
// down.
httpServer_->start(getHttpServerFilters());
if (announcer_ != nullptr) {
PRESTO_SHUTDOWN_LOG(INFO) << "Stopping announcer";
announcer_->stop();
}
if (heartbeatManager_ != nullptr) {
PRESTO_SHUTDOWN_LOG(INFO) << "Stopping Heartbeat manager";
heartbeatManager_->stop();
}
PRESTO_SHUTDOWN_LOG(INFO) << "Stopping all periodic tasks";
periodicTaskManager_->stop();
stopAdditionalPeriodicTasks();
stopMemoryCheckerPeriodicTask();
// Destroy entities here to ensure we won't get any messages after Server
// object is gone and to have nice log in case shutdown gets stuck.
PRESTO_SHUTDOWN_LOG(INFO) << "Destroying Task Resource";
taskResource_.reset();
PRESTO_SHUTDOWN_LOG(INFO) << "Destroying Task Manager";
taskManager_.reset();
PRESTO_SHUTDOWN_LOG(INFO) << "Destroying HTTP Server";
httpServer_.reset();
unregisterFileReadersAndWriters();
unregisterFileSystems();
unregisterConnectors();
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining Driver CPU Executor '" << driverExecutor_->getName()
<< "': threads: " << driverExecutor_->numActiveThreads() << "/"
<< driverExecutor_->numThreads()
<< ", task queue: " << driverExecutor_->getTaskQueueSize();
// Schedule release of SessionPools held by HttpClients before the exchange
// HTTP IO executor threads are joined.
driverExecutor_.reset();
if (connectorIoExecutor_) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining Connector IO Executor '" << connectorIoExecutor_->getName()
<< "': threads: " << connectorIoExecutor_->numActiveThreads() << "/"
<< connectorIoExecutor_->numThreads();
connectorIoExecutor_->join();
}
if (httpSrvCpuExecutor_ != nullptr) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining HTTP Server CPU Executor '"
<< httpSrvCpuExecutor_->getName()
<< "': threads: " << httpSrvCpuExecutor_->numActiveThreads() << "/"
<< httpSrvCpuExecutor_->numThreads()
<< ", task queue: " << httpSrvCpuExecutor_->getTaskQueueSize();
httpSrvCpuExecutor_->join();
}
if (httpSrvIoExecutor_ != nullptr) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining HTTP Server IO Executor '" << httpSrvIoExecutor_->getName()
<< "': threads: " << httpSrvIoExecutor_->numActiveThreads() << "/"
<< httpSrvIoExecutor_->numThreads();
httpSrvIoExecutor_->join();
}
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining Exchange Http CPU executor '"
<< exchangeHttpCpuExecutor_->getName()
<< "': threads: " << exchangeHttpCpuExecutor_->numActiveThreads() << "/"
<< exchangeHttpCpuExecutor_->numThreads();
exchangeHttpCpuExecutor_->join();
// Schedule release of SessionPools held by HttpClients before the exchange
// HTTP IO executor threads are joined.
exchangeHttpCpuExecutor_.reset();
if (exchangeSourceConnectionPool_) {
// Connection pool needs to be destroyed after CPU threads are joined but
// before IO threads are joined.
PRESTO_SHUTDOWN_LOG(INFO) << "Releasing exchange HTTP connection pools";
exchangeSourceConnectionPool_->destroy();
}
PRESTO_SHUTDOWN_LOG(INFO)
<< "Joining Exchange Http IO executor '"
<< exchangeHttpIoExecutor_->getName()
<< "': threads: " << exchangeHttpIoExecutor_->numActiveThreads() << "/"
<< exchangeHttpIoExecutor_->numThreads();
exchangeHttpIoExecutor_->join();
PRESTO_SHUTDOWN_LOG(INFO) << "Done joining our executors.";
auto globalCPUKeepAliveExec = folly::getGlobalCPUExecutor();
if (auto* pGlobalCPUExecutor = dynamic_cast<folly::CPUThreadPoolExecutor*>(
globalCPUKeepAliveExec.get())) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "Global CPU Executor '" << pGlobalCPUExecutor->getName()
<< "': threads: " << pGlobalCPUExecutor->numActiveThreads() << "/"
<< pGlobalCPUExecutor->numThreads()
<< ", task queue: " << pGlobalCPUExecutor->getTaskQueueSize();
}
auto globalIOKeepAliveExec = folly::getGlobalIOExecutor();
if (auto* pGlobalIOExecutor = dynamic_cast<folly::IOThreadPoolExecutor*>(
globalIOKeepAliveExec.get())) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "Global IO Executor '" << pGlobalIOExecutor->getName()
<< "': threads: " << pGlobalIOExecutor->numActiveThreads() << "/"
<< pGlobalIOExecutor->numThreads();
}
if (cache_ != nullptr) {
PRESTO_SHUTDOWN_LOG(INFO) << "Shutdown AsyncDataCache";
cache_->shutdown();
}
}
void PrestoServer::yieldTasks() {
const auto timeslice = SystemConfig::instance()->taskRunTimeSliceMicros();
if (timeslice <= 0) {
return;
}
static std::atomic<int32_t> numYields = 0;
const auto numQueued = driverExecutor_->getTaskQueueSize();
if (numQueued > 0) {
numYields += taskManager_->yieldTasks(numQueued, timeslice);
}
if (numYields > 100'000) {
LOG(INFO) << "Yielded " << numYields << " more threads.";
numYields = 0;
}
}
#ifdef __linux__
class BatchThreadFactory : public folly::NamedThreadFactory {
public:
explicit BatchThreadFactory(const std::string& name)
: NamedThreadFactory{name} {}
std::thread newThread(folly::Func&& func) override {
return folly::NamedThreadFactory::newThread([_func = std::move(
func)]() mutable {
sched_param param;
param.sched_priority = 0;
const int ret =
pthread_setschedparam(pthread_self(), SCHED_BATCH, ¶m);
VELOX_CHECK_EQ(
ret, 0, "Failed to set a thread priority: {}", folly::errnoStr(ret));
_func();
});
}
};
#endif
void PrestoServer::initializeThreadPools() {
const auto hwConcurrency = std::thread::hardware_concurrency();
auto* systemConfig = SystemConfig::instance();
const auto numDriverCpuThreads = std::max<size_t>(
systemConfig->driverNumCpuThreadsHwMultiplier() * hwConcurrency, 1);
std::shared_ptr<folly::NamedThreadFactory> threadFactory;
if (systemConfig->driverThreadsBatchSchedulingEnabled()) {
#ifdef __linux__
threadFactory = std::make_shared<BatchThreadFactory>("Driver");
#else
VELOX_FAIL("Batch scheduling policy can only be enabled on Linux");
#endif
} else {
threadFactory = std::make_shared<folly::NamedThreadFactory>("Driver");
}
driverExecutor_ = std::make_shared<folly::CPUThreadPoolExecutor>(
numDriverCpuThreads, threadFactory);
const auto numIoThreads = std::max<size_t>(
systemConfig->httpServerNumIoThreadsHwMultiplier() * hwConcurrency, 1);
httpSrvIoExecutor_ = std::make_shared<folly::IOThreadPoolExecutor>(
numIoThreads, std::make_shared<folly::NamedThreadFactory>("HTTPSrvIO"));
const auto numCpuThreads = std::max<size_t>(
systemConfig->httpServerNumCpuThreadsHwMultiplier() * hwConcurrency, 1);
httpSrvCpuExecutor_ = std::make_shared<folly::CPUThreadPoolExecutor>(
numCpuThreads, std::make_shared<folly::NamedThreadFactory>("HTTPSrvCpu"));
const auto numSpillerCpuThreads = std::max<size_t>(
systemConfig->spillerNumCpuThreadsHwMultiplier() * hwConcurrency, 0);
if (numSpillerCpuThreads > 0) {
spillerExecutor_ = std::make_shared<folly::CPUThreadPoolExecutor>(
numSpillerCpuThreads,
std::make_shared<folly::NamedThreadFactory>("Spiller"));
}
}
std::unique_ptr<cache::SsdCache> PrestoServer::setupSsdCache() {
VELOX_CHECK_NULL(cacheExecutor_);
auto* systemConfig = SystemConfig::instance();
if (systemConfig->asyncCacheSsdGb() == 0) {
return nullptr;
}
constexpr int32_t kNumSsdShards = 16;
cacheExecutor_ = std::make_unique<folly::IOThreadPoolExecutor>(kNumSsdShards);
cache::SsdCache::Config cacheConfig(
systemConfig->asyncCacheSsdPath(),
systemConfig->asyncCacheSsdGb() << 30,
kNumSsdShards,
cacheExecutor_.get(),
systemConfig->asyncCacheSsdCheckpointGb() << 30,
systemConfig->asyncCacheSsdDisableFileCow(),
systemConfig->ssdCacheChecksumEnabled(),
systemConfig->ssdCacheReadVerificationEnabled());
PRESTO_STARTUP_LOG(INFO) << "Initializing SSD cache with "
<< cacheConfig.toString();
return std::make_unique<cache::SsdCache>(cacheConfig);
}
void PrestoServer::initializeVeloxMemory() {
auto* systemConfig = SystemConfig::instance();
const uint64_t memoryGb = systemConfig->systemMemoryGb();
PRESTO_STARTUP_LOG(INFO) << "Starting with node memory " << memoryGb << "GB";
// Set up velox memory manager.
memory::MemoryManagerOptions options;
options.allocatorCapacity = memoryGb << 30;
if (systemConfig->useMmapAllocator()) {
options.useMmapAllocator = true;
}
options.checkUsageLeak = systemConfig->enableMemoryLeakCheck();
options.trackDefaultUsage =
systemConfig->enableSystemMemoryPoolUsageTracking();
options.coreOnAllocationFailureEnabled =
systemConfig->coreOnAllocationFailureEnabled();
if (!systemConfig->memoryArbitratorKind().empty()) {
options.arbitratorKind = systemConfig->memoryArbitratorKind();
const uint64_t queryMemoryGb = systemConfig->queryMemoryGb();
VELOX_USER_CHECK_LE(
queryMemoryGb,
memoryGb,
"Query memory capacity must not be larger than system memory capacity");
options.arbitratorCapacity = queryMemoryGb << 30;
const uint64_t sharedArbitratorReservedMemoryGb = velox::config::toCapacity(
systemConfig->sharedArbitratorReservedCapacity(),
velox::config::CapacityUnit::GIGABYTE);
VELOX_USER_CHECK_LE(
sharedArbitratorReservedMemoryGb,
queryMemoryGb,
"Shared arbitrator reserved memory capacity must not be larger than "
"query memory capacity");
options.largestSizeClassPages = systemConfig->largestSizeClassPages();
options.arbitrationStateCheckCb = velox::exec::memoryArbitrationStateCheck;
using SharedArbitratorConfig = velox::memory::SharedArbitrator::ExtraConfig;
options.extraArbitratorConfigs = {
{std::string(SharedArbitratorConfig::kReservedCapacity),
systemConfig->sharedArbitratorReservedCapacity()},
{std::string(SharedArbitratorConfig::kMemoryPoolInitialCapacity),
systemConfig->sharedArbitratorMemoryPoolInitialCapacity()},
{std::string(SharedArbitratorConfig::kMemoryPoolReservedCapacity),
systemConfig->sharedArbitratorMemoryPoolReservedCapacity()},
{std::string(SharedArbitratorConfig::kMemoryReclaimMaxWaitTime),
systemConfig->sharedArbitratorMemoryReclaimWaitTime()},
{std::string(SharedArbitratorConfig::kMemoryPoolMinFreeCapacity),
systemConfig->sharedArbitratorMemoryPoolMinFreeCapacity()},
{std::string(SharedArbitratorConfig::kMemoryPoolMinFreeCapacityPct),
systemConfig->sharedArbitratorMemoryPoolMinFreeCapacityPct()},
{std::string(SharedArbitratorConfig::kGlobalArbitrationEnabled),
systemConfig->sharedArbitratorGlobalArbitrationEnabled()},
{std::string(
SharedArbitratorConfig::kFastExponentialGrowthCapacityLimit),
systemConfig->sharedArbitratorFastExponentialGrowthCapacityLimit()},
{std::string(SharedArbitratorConfig::kSlowCapacityGrowPct),
systemConfig->sharedArbitratorSlowCapacityGrowPct()},
{std::string(SharedArbitratorConfig::kCheckUsageLeak),
folly::to<std::string>(systemConfig->enableMemoryLeakCheck())}};
}
memory::initializeMemoryManager(options);
PRESTO_STARTUP_LOG(INFO) << "Memory manager has been setup: "
<< memory::memoryManager()->toString();
if (systemConfig->asyncDataCacheEnabled()) {
std::unique_ptr<cache::SsdCache> ssd = setupSsdCache();
std::string cacheStr =
ssd == nullptr ? "AsyncDataCache" : "AsyncDataCache with SSD";
cache::AsyncDataCache::Options cacheOptions{
systemConfig->asyncCacheMaxSsdWriteRatio(),
systemConfig->asyncCacheSsdSavableRatio(),
systemConfig->asyncCacheMinSsdSavableBytes()};
cache_ = cache::AsyncDataCache::create(
memory::memoryManager()->allocator(), std::move(ssd), cacheOptions);
cache::AsyncDataCache::setInstance(cache_.get());
PRESTO_STARTUP_LOG(INFO) << cacheStr << " has been setup";
if (isCacheTtlEnabled()) {
cache::CacheTTLController::create(*cache_);
PRESTO_STARTUP_LOG(INFO) << fmt::format(
"Cache TTL is enabled, with TTL {} enforced every {}.",
succinctMillis(std::chrono::duration_cast<std::chrono::milliseconds>(
systemConfig->cacheVeloxTtlThreshold())
.count()),
succinctMillis(std::chrono::duration_cast<std::chrono::milliseconds>(
systemConfig->cacheVeloxTtlCheckInterval())
.count()));
}
} else {
VELOX_CHECK_EQ(
systemConfig->asyncCacheSsdGb(),
0,
"Async data cache cannot be disabled if ssd cache is enabled");
}
}
void PrestoServer::stop() {
// Make sure we only go here once and change the state under the lock.
{
auto writeLockedShuttingDown = shuttingDown_.wlock();
if (*writeLockedShuttingDown) {
return;
}
PRESTO_SHUTDOWN_LOG(INFO) << "Shutdown has been requested. "
"Setting node state to 'shutting down'.";
*writeLockedShuttingDown = true;
setNodeState(NodeState::kShuttingDown);
}
auto shutdownOnsetSec = SystemConfig::instance()->shutdownOnsetSec();
PRESTO_SHUTDOWN_LOG(INFO)
<< "Waiting for " << shutdownOnsetSec
<< " second(s) before proceeding with the shutdown...";
// Give coordinator some time to receive our new node state and stop sending
// any tasks.
std::this_thread::sleep_for(std::chrono::seconds(shutdownOnsetSec));
taskManager_->shutdown();
// Give coordinator some time to request tasks stats for completed or failed
// tasks.
std::this_thread::sleep_for(std::chrono::seconds(shutdownOnsetSec));
if (httpServer_) {
PRESTO_SHUTDOWN_LOG(INFO)
<< "All tasks are completed. Stopping HTTP Server...";
httpServer_->stop();
PRESTO_SHUTDOWN_LOG(INFO) << "HTTP Server stopped.";
}
}
size_t PrestoServer::numDriverThreads() const {
VELOX_CHECK(
driverExecutor_ != nullptr,
"Driver executor is expected to be not null, but it is null!");
return driverExecutor_->numThreads();
}
void PrestoServer::detachWorker() {
auto readLockedShuttingDown = shuttingDown_.rlock();
if (!*readLockedShuttingDown && nodeState() == NodeState::kActive) {
// Benefit of shutting down is that the queries that aren't stuck yet will
// be finished. While stopping announcement would kill them.
LOG(WARNING) << "Changing node status to SHUTTING_DOWN.";
setNodeState(NodeState::kShuttingDown);
}
}
void PrestoServer::maybeAttachWorker() {
auto readLockedShuttingDown = shuttingDown_.rlock();
if (!*readLockedShuttingDown && nodeState() == NodeState::kShuttingDown) {
LOG(WARNING) << "Changing node status to ACTIVE.";
setNodeState(NodeState::kActive);
}
}
void PrestoServer::setNodeState(NodeState nodeState) {
nodeState_ = nodeState;
updateAnnouncerDetails();
}
void PrestoServer::enableAnnouncer(bool enable) {
if (announcer_ != nullptr) {
announcer_->enableRequest(enable);
}
}
void PrestoServer::initializeCoordinatorDiscoverer() {
// Do not create CoordinatorDiscoverer if we don't have discovery uri.
if (SystemConfig::instance()->discoveryUri().has_value()) {
coordinatorDiscoverer_ = std::make_shared<CoordinatorDiscoverer>();
}
}
void PrestoServer::updateAnnouncerDetails() {
if (announcer_ != nullptr) {
announcer_->setDetails(
fmt::format("State: {}.", nodeState2String(nodeState_)));
}
}
void PrestoServer::addMemoryCheckerPeriodicTask() {
if (folly::Singleton<PeriodicMemoryChecker>::try_get()) {
folly::Singleton<PeriodicMemoryChecker>::try_get()->start();
}
}
void PrestoServer::stopMemoryCheckerPeriodicTask() {
if (folly::Singleton<PeriodicMemoryChecker>::try_get()) {
folly::Singleton<PeriodicMemoryChecker>::try_get()->stop();
}
}
void PrestoServer::addServerPeriodicTasks() {
periodicTaskManager_->addTask(
[server = this]() { server->populateMemAndCPUInfo(); },
1'000'000, // 1 second
"populate_mem_cpu_info");