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Refactor Pipe [part 5].
This commit is contained in:
Nikolai Kochetov
parent
9385f3de0e
commit
a153f05e10
@ -87,8 +87,8 @@ BlockIO InterpreterAlterQuery::execute()
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if (!partition_commands.empty())
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{
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table->checkAlterPartitionIsPossible(partition_commands, metadata_snapshot, context.getSettingsRef());
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auto partition_commands_pipes = table->alterPartition(query_ptr, metadata_snapshot, partition_commands, context);
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if (!partition_commands_pipes.empty())
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auto partition_commands_pipe = table->alterPartition(query_ptr, metadata_snapshot, partition_commands, context);
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if (!partition_commands_pipe.empty())
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res.pipeline.init(std::move(partition_commands_pipes));
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}
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@ -6,6 +6,8 @@
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#include <Processors/LimitTransform.h>
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#include <Processors/NullSink.h>
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#include <Processors/Transforms/ExtremesTransform.h>
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#include <Processors/Formats/IOutputFormat.h>
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#include <Processors/Sources/NullSource.h>
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namespace DB
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{
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@ -374,7 +376,37 @@ void Pipe::addExtremesSource(ProcessorPtr source)
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processors.emplace_back(std::move(source));
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}
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static void dropPort(OutputPort *& port, Processors & processors, Processors * collected_processors)
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{
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if (port == nullptr)
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return;
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auto null_sink = std::make_shared<NullSink>(port->getHeader());
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connect(*port, null_sink->getPort());
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if (collected_processors)
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collected_processors->emplace_back(null_sink.get());
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processors.emplace_back(std::move(null_sink));
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port = nullptr;
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}
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void Pipe::dropTotals()
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{
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dropPort(totals_port, processors, collected_processors);
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}
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void Pipe::dropExtremes()
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{
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dropPort(extremes_port, processors, collected_processors);
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}
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void Pipe::addTransform(ProcessorPtr transform)
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{
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addTransform(std::move(transform), nullptr, nullptr);
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}
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void Pipe::addTransform(ProcessorPtr transform, OutputPort * totals, OutputPort * extremes)
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{
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if (output_ports.empty())
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throw Exception("Cannot add transform to empty Pipe.", ErrorCodes::LOGICAL_ERROR);
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@ -385,6 +417,19 @@ void Pipe::addTransform(ProcessorPtr transform)
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"Processor has " + std::to_string(inputs.size()) + " input ports, "
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"but " + std::to_string(output_ports.size()) + " expected", ErrorCodes::LOGICAL_ERROR);
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if (totals && totals_port)
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throw Exception("Cannot add transform with totals to Pipe because it already has totals.",
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ErrorCodes::LOGICAL_ERROR);
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if (extremes && extremes_port)
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throw Exception("Cannot add transform with totals to Pipe because it already has totals.",
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ErrorCodes::LOGICAL_ERROR);
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if (totals)
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totals_port = totals;
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if (extremes)
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extremes_port = extremes;
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size_t next_output = 0;
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for (auto & input : inputs)
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{
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@ -393,15 +438,34 @@ void Pipe::addTransform(ProcessorPtr transform)
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}
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auto & outputs = transform->getOutputs();
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if (outputs.empty())
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throw Exception("Cannot add transform " + transform->getName() + " to Pipes because it has no outputs",
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ErrorCodes::LOGICAL_ERROR);
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output_ports.clear();
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output_ports.reserve(outputs.size());
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bool found_totals = false;
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bool found_extremes = false;
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for (auto & output : outputs)
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output_ports.emplace_back(&output);
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{
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if (&output == totals)
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found_totals = true;
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else if (&output == extremes)
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found_extremes = true;
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else
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output_ports.emplace_back(&output);
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}
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if (totals && !found_totals)
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throw Exception("Cannot add transform " + transform->getName() + " to Pipes because "
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"specified totals port does not belong to it", ErrorCodes::LOGICAL_ERROR);
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if (extremes && !found_extremes)
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throw Exception("Cannot add transform " + transform->getName() + " to Pipes because "
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"specified extremes port does not belong to it", ErrorCodes::LOGICAL_ERROR);
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if (output_ports.empty())
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throw Exception("Cannot add transform " + transform->getName() + " to Pipes because it has no outputs",
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ErrorCodes::LOGICAL_ERROR);
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header = output_ports.front()->getHeader();
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for (size_t i = 1; i < output_ports.size(); ++i)
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@ -524,6 +588,44 @@ void Pipe::setSinks(const Pipe::ProcessorGetterWithStreamKind & getter)
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header.clear();
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}
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void Pipe::setOutputFormat(ProcessorPtr output)
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{
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if (output_ports.empty())
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throw Exception("Cannot set output format to empty Pipe.", ErrorCodes::LOGICAL_ERROR);
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if (output_ports.size() != 1)
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throw Exception("Cannot set output format to Pipe because single output port is expected, "
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"but it has " + std::to_string(output_ports.size()) + " ports", ErrorCodes::LOGICAL_ERROR);
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auto * format = dynamic_cast<IOutputFormat * >(output.get());
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if (!format)
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throw Exception("IOutputFormat processor expected for QueryPipeline::setOutputFormat.",
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ErrorCodes::LOGICAL_ERROR);
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auto & main = format->getPort(IOutputFormat::PortKind::Main);
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auto & totals = format->getPort(IOutputFormat::PortKind::Totals);
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auto & extremes = format->getPort(IOutputFormat::PortKind::Extremes);
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if (!totals_port)
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addTotalsSource(std::make_shared<NullSource>(totals.getHeader()));
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if (!extremes_port)
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addExtremesSource(std::make_shared<NullSource>(extremes.getHeader()));
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if (collected_processors)
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collected_processors->emplace_back(output.get());
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processors.emplace_back(std::move(output));
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connect(*output_ports.front(), main);
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connect(*totals_port, totals);
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connect(*extremes_port, extremes);
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output_ports.clear();
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header.clear();
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}
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void Pipe::transform(const Transformer & transformer)
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{
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if (output_ports.empty())
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@ -620,13 +722,4 @@ void Pipe::setQuota(const std::shared_ptr<const EnabledQuota> & quota)
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}
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}
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void Pipe::enableQuota()
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{
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for (auto & processor : processors)
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{
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if (auto * source = dynamic_cast<ISource *>(processor.get()))
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source->enableQuota();
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}
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}
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}
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@ -52,10 +52,15 @@ public:
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void addTotalsSource(ProcessorPtr source);
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void addExtremesSource(ProcessorPtr source);
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/// Drop totals and extremes (create NullSink for them).
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void dropTotals();
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void dropExtremes();
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/// Add processor to list. It should have size() input ports with compatible header.
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/// Output ports should have same headers.
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/// If totals or extremes are not empty, transform shouldn't change header.
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void addTransform(ProcessorPtr transform);
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void addTransform(ProcessorPtr transform, OutputPort * totals, OutputPort * extremes);
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enum class StreamType
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{
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@ -85,7 +90,6 @@ public:
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/// Specify quotas and limits for every ISourceWithProgress.
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void setLimits(const SourceWithProgress::LocalLimits & limits);
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void setQuota(const std::shared_ptr<const EnabledQuota> & quota);
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void enableQuota();
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/// Do not allow to change the table while the processors of pipe are alive.
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void addTableLock(const TableLockHolder & lock) { table_locks.push_back(lock); }
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@ -125,6 +129,7 @@ private:
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bool isCompleted() const { return !empty() && output_ports.empty(); }
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static Pipe unitePipes(Pipes pipes, Processors * collected_processors);
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void setSinks(const Pipe::ProcessorGetterWithStreamKind & getter);
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void setOutputFormat(ProcessorPtr output);
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friend class QueryPipeline;
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};
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@ -2,9 +2,7 @@
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#include <Processors/ResizeProcessor.h>
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#include <Processors/ConcatProcessor.h>
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#include <Processors/NullSink.h>
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#include <Processors/LimitTransform.h>
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#include <Processors/Sources/NullSource.h>
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#include <Processors/Transforms/TotalsHavingTransform.h>
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#include <Processors/Transforms/ExtremesTransform.h>
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#include <Processors/Transforms/CreatingSetsTransform.h>
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@ -148,8 +146,7 @@ void QueryPipeline::addTotalsHavingTransform(ProcessorPtr transform)
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resize(1);
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auto * totals_port = &transform->getOutputs().back();
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pipe.addTransform(std::move(transform));
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pipe.totals_port = totals_port;
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pipe.addTransform(std::move(transform), totals_port, nullptr);
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}
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void QueryPipeline::addDefaultTotals()
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@ -176,46 +173,21 @@ void QueryPipeline::addDefaultTotals()
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void QueryPipeline::dropTotalsAndExtremes()
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{
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auto drop_port = [&](OutputPort *& port)
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{
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auto null_sink = std::make_shared<NullSink>(port->getHeader());
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connect(*port, null_sink->getPort());
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processors.emplace(std::move(null_sink));
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port = nullptr;
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};
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if (totals_having_port)
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drop_port(totals_having_port);
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if (extremes_port)
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drop_port(extremes_port);
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pipe.dropTotals();
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pipe.dropExtremes();
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}
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void QueryPipeline::addExtremesTransform()
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{
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checkInitializedAndNotCompleted();
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if (extremes_port)
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if (pipe.getExtremesPort())
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throw Exception("Extremes transform was already added to pipeline.", ErrorCodes::LOGICAL_ERROR);
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std::vector<OutputPort *> extremes;
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extremes.reserve(streams.size());
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for (auto & stream : streams)
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{
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auto transform = std::make_shared<ExtremesTransform>(current_header);
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connect(*stream, transform->getInputPort());
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stream = &transform->getOutputPort();
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extremes.push_back(&transform->getExtremesPort());
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processors.emplace(std::move(transform));
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}
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if (extremes.size() == 1)
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extremes_port = extremes.front();
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else
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extremes_port = uniteExtremes(extremes, current_header, processors);
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resize(1);
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auto transform = std::make_shared<ExtremesTransform>(getHeader());
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auto * port = &transform->getExtremesPort();
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pipe.addTransform(std::move(transform), nullptr, port);
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}
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void QueryPipeline::addCreatingSetsTransform(ProcessorPtr transform)
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@ -228,94 +200,49 @@ void QueryPipeline::addCreatingSetsTransform(ProcessorPtr transform)
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resize(1);
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auto concat = std::make_shared<ConcatProcessor>(current_header, 2);
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connect(transform->getOutputs().front(), concat->getInputs().front());
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connect(*streams.back(), concat->getInputs().back());
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streams.assign({ &concat->getOutputs().front() });
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processors.emplace(std::move(transform));
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processors.emplace(std::move(concat));
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/// Order is important for concat. Connect manually.
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pipe.transform([&](OutputPortRawPtrs ports) -> Processors
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{
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auto concat = std::make_shared<ConcatProcessor>(getHeader(), 2);
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connect(transform->getOutputs().front(), concat->getInputs().front());
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connect(*ports.back(), concat->getInputs().back());
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return { std::move(concat), std::move(transform) };
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});
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}
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void QueryPipeline::setOutputFormat(ProcessorPtr output)
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{
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checkInitializedAndNotCompleted();
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auto * format = dynamic_cast<IOutputFormat * >(output.get());
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if (!format)
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throw Exception("IOutputFormat processor expected for QueryPipeline::setOutputFormat.", ErrorCodes::LOGICAL_ERROR);
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if (output_format)
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throw Exception("QueryPipeline already has output.", ErrorCodes::LOGICAL_ERROR);
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output_format = format;
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resize(1);
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auto & main = format->getPort(IOutputFormat::PortKind::Main);
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auto & totals = format->getPort(IOutputFormat::PortKind::Totals);
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auto & extremes = format->getPort(IOutputFormat::PortKind::Extremes);
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if (!totals_having_port)
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{
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auto null_source = std::make_shared<NullSource>(totals.getHeader());
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totals_having_port = &null_source->getPort();
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processors.emplace(std::move(null_source));
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}
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if (!extremes_port)
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{
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auto null_source = std::make_shared<NullSource>(extremes.getHeader());
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extremes_port = &null_source->getPort();
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processors.emplace(std::move(null_source));
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}
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processors.emplace(std::move(output));
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connect(*streams.front(), main);
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connect(*totals_having_port, totals);
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connect(*extremes_port, extremes);
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streams.clear();
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current_header.clear();
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extremes_port = nullptr;
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totals_having_port = nullptr;
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output_format = dynamic_cast<IOutputFormat * >(output.get());
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pipe.setOutputFormat(std::move(output));
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initRowsBeforeLimit();
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}
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void QueryPipeline::unitePipelines(
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std::vector<std::unique_ptr<QueryPipeline>> pipelines, const Block & common_header, size_t max_threads_limit)
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QueryPipeline QueryPipeline::unitePipelines(
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std::vector<std::unique_ptr<QueryPipeline>> pipelines,
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const Block & common_header,
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size_t max_threads_limit,
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Processors * collected_processors)
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{
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/// Should we limit the number of threads for united pipeline. True if all pipelines have max_threads != 0.
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/// If true, result max_threads will be sum(max_threads).
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/// Note: it may be > than settings.max_threads, so we should apply this limit again.
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bool will_limit_max_threads = !initialized() || max_threads != 0;
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if (initialized())
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{
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addSimpleTransform([&](const Block & header)
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{
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return std::make_shared<ConvertingTransform>(
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header, common_header, ConvertingTransform::MatchColumnsMode::Position);
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});
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}
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std::vector<OutputPort *> extremes;
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std::vector<OutputPort *> totals;
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if (extremes_port)
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extremes.push_back(extremes_port);
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if (totals_having_port)
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totals.push_back(totals_having_port);
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bool will_limit_max_threads = true;
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size_t max_threads = 0;
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Pipes pipes;
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for (auto & pipeline_ptr : pipelines)
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{
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auto & pipeline = *pipeline_ptr;
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pipeline.checkInitialized();
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pipeline.processors.setCollectedProcessors(processors.getCollectedProcessors());
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pipeline.pipe.collected_processors = collected_processors;
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if (!pipeline.isCompleted())
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{
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@ -326,36 +253,7 @@ void QueryPipeline::unitePipelines(
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});
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}
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if (pipeline.extremes_port)
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{
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auto converting = std::make_shared<ConvertingTransform>(
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pipeline.current_header, common_header, ConvertingTransform::MatchColumnsMode::Position);
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connect(*pipeline.extremes_port, converting->getInputPort());
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extremes.push_back(&converting->getOutputPort());
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processors.emplace(std::move(converting));
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}
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/// Take totals only from first port.
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if (pipeline.totals_having_port)
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{
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auto converting = std::make_shared<ConvertingTransform>(
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pipeline.current_header, common_header, ConvertingTransform::MatchColumnsMode::Position);
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connect(*pipeline.totals_having_port, converting->getInputPort());
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totals.push_back(&converting->getOutputPort());
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processors.emplace(std::move(converting));
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}
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auto * collector = processors.setCollectedProcessors(nullptr);
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processors.emplace(pipeline.processors.detach());
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processors.setCollectedProcessors(collector);
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streams.addStreams(pipeline.streams);
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table_locks.insert(table_locks.end(), std::make_move_iterator(pipeline.table_locks.begin()), std::make_move_iterator(pipeline.table_locks.end()));
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interpreter_context.insert(interpreter_context.end(), pipeline.interpreter_context.begin(), pipeline.interpreter_context.end());
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storage_holders.insert(storage_holders.end(), pipeline.storage_holders.begin(), pipeline.storage_holders.end());
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pipes.emplace_back(std::move(pipeline.pipe));
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max_threads += pipeline.max_threads;
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will_limit_max_threads = will_limit_max_threads && pipeline.max_threads != 0;
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@ -366,33 +264,21 @@ void QueryPipeline::unitePipelines(
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max_threads_limit = pipeline.max_threads;
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}
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if (!will_limit_max_threads)
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max_threads = 0;
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else
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limitMaxThreads(max_threads_limit);
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QueryPipeline pipeline;
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pipeline.init(Pipe::unitePipes(std::move(pipes), collected_processors));
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if (!extremes.empty())
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if (will_limit_max_threads)
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{
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if (extremes.size() == 1)
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extremes_port = extremes.back();
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else
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extremes_port = uniteExtremes(extremes, common_header, processors);
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pipeline.setMaxThreads(max_threads);
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pipeline.limitMaxThreads(max_threads_limit);
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}
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if (!totals.empty())
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{
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if (totals.size() == 1)
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totals_having_port = totals.back();
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else
|
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totals_having_port = uniteTotals(totals, common_header, processors);
|
||||
}
|
||||
|
||||
current_header = common_header;
|
||||
return pipeline;
|
||||
}
|
||||
|
||||
void QueryPipeline::setProgressCallback(const ProgressCallback & callback)
|
||||
{
|
||||
for (auto & processor : processors.get())
|
||||
for (auto & processor : pipe.processors)
|
||||
{
|
||||
if (auto * source = dynamic_cast<ISourceWithProgress *>(processor.get()))
|
||||
source->setProgressCallback(callback);
|
||||
@ -406,7 +292,7 @@ void QueryPipeline::setProcessListElement(QueryStatus * elem)
|
||||
{
|
||||
process_list_element = elem;
|
||||
|
||||
for (auto & processor : processors.get())
|
||||
for (auto & processor : pipe.processors)
|
||||
{
|
||||
if (auto * source = dynamic_cast<ISourceWithProgress *>(processor.get()))
|
||||
source->setProcessListElement(elem);
|
||||
@ -510,101 +396,28 @@ void QueryPipeline::initRowsBeforeLimit()
|
||||
output_format->setRowsBeforeLimitCounter(rows_before_limit_at_least);
|
||||
}
|
||||
|
||||
Pipe QueryPipeline::getPipe() &&
|
||||
{
|
||||
Pipes pipes(processors.detach(), streams.at(0), totals_having_port, extremes_port);
|
||||
pipe.max_parallel_streams = streams.maxParallelStreams();
|
||||
|
||||
for (auto & lock : table_locks)
|
||||
pipe.addTableLock(lock);
|
||||
|
||||
for (auto & context : interpreter_context)
|
||||
pipe.addInterpreterContext(context);
|
||||
|
||||
for (auto & storage : storage_holders)
|
||||
pipe.addStorageHolder(storage);
|
||||
|
||||
if (totals_having_port)
|
||||
pipe.setTotalsPort(totals_having_port);
|
||||
|
||||
if (extremes_port)
|
||||
pipe.setExtremesPort(extremes_port);
|
||||
|
||||
Pipes pipes;
|
||||
pipes.emplace_back(std::move(pipe));
|
||||
|
||||
for (size_t i = 1; i < streams.size(); ++i)
|
||||
pipes.emplace_back(Pipe(streams[i]));
|
||||
|
||||
return pipes;
|
||||
}
|
||||
|
||||
PipelineExecutorPtr QueryPipeline::execute()
|
||||
{
|
||||
if (!isCompleted())
|
||||
throw Exception("Cannot execute pipeline because it is not completed.", ErrorCodes::LOGICAL_ERROR);
|
||||
|
||||
return std::make_shared<PipelineExecutor>(processors.get(), process_list_element);
|
||||
return std::make_shared<PipelineExecutor>(pipe.processors, process_list_element);
|
||||
}
|
||||
|
||||
QueryPipeline & QueryPipeline::operator= (QueryPipeline && rhs)
|
||||
void QueryPipeline::setCollectedProcessors(Processors * processors)
|
||||
{
|
||||
/// Reset primitive fields
|
||||
process_list_element = rhs.process_list_element;
|
||||
rhs.process_list_element = nullptr;
|
||||
max_threads = rhs.max_threads;
|
||||
rhs.max_threads = 0;
|
||||
output_format = rhs.output_format;
|
||||
rhs.output_format = nullptr;
|
||||
extremes_port = rhs.extremes_port;
|
||||
rhs.extremes_port = nullptr;
|
||||
totals_having_port = rhs.totals_having_port;
|
||||
rhs.totals_having_port = nullptr;
|
||||
|
||||
/// Move these fields in destruction order (it's important)
|
||||
streams = std::move(rhs.streams);
|
||||
processors = std::move(rhs.processors);
|
||||
current_header = std::move(rhs.current_header);
|
||||
table_locks = std::move(rhs.table_locks);
|
||||
storage_holders = std::move(rhs.storage_holders);
|
||||
interpreter_context = std::move(rhs.interpreter_context);
|
||||
|
||||
return *this;
|
||||
}
|
||||
|
||||
void QueryPipeline::ProcessorsContainer::emplace(ProcessorPtr processor)
|
||||
{
|
||||
if (collected_processors)
|
||||
collected_processors->emplace_back(processor);
|
||||
|
||||
processors.emplace_back(std::move(processor));
|
||||
}
|
||||
|
||||
void QueryPipeline::ProcessorsContainer::emplace(Processors processors_)
|
||||
{
|
||||
for (auto & processor : processors_)
|
||||
emplace(std::move(processor));
|
||||
}
|
||||
|
||||
Processors * QueryPipeline::ProcessorsContainer::setCollectedProcessors(Processors * collected_processors_)
|
||||
{
|
||||
if (collected_processors && collected_processors_)
|
||||
throw Exception("Cannot set collected processors to QueryPipeline because "
|
||||
"another one object was already created for current pipeline." , ErrorCodes::LOGICAL_ERROR);
|
||||
|
||||
std::swap(collected_processors, collected_processors_);
|
||||
return collected_processors_;
|
||||
pipe.collected_processors = processors;
|
||||
}
|
||||
|
||||
QueryPipelineProcessorsCollector::QueryPipelineProcessorsCollector(QueryPipeline & pipeline_, IQueryPlanStep * step_)
|
||||
: pipeline(pipeline_), step(step_)
|
||||
{
|
||||
pipeline.processors.setCollectedProcessors(&processors);
|
||||
pipeline.setCollectedProcessors(&processors);
|
||||
}
|
||||
|
||||
QueryPipelineProcessorsCollector::~QueryPipelineProcessorsCollector()
|
||||
{
|
||||
pipeline.processors.setCollectedProcessors(nullptr);
|
||||
pipeline.setCollectedProcessors(nullptr);
|
||||
}
|
||||
|
||||
Processors QueryPipelineProcessorsCollector::detachProcessors(size_t group)
|
||||
|
||||
@ -28,7 +28,7 @@ public:
|
||||
~QueryPipeline() = default;
|
||||
QueryPipeline(QueryPipeline &&) = default;
|
||||
QueryPipeline(const QueryPipeline &) = delete;
|
||||
QueryPipeline & operator= (QueryPipeline && rhs);
|
||||
QueryPipeline & operator= (QueryPipeline && rhs) = default;
|
||||
QueryPipeline & operator= (const QueryPipeline & rhs) = delete;
|
||||
|
||||
/// All pipes must have same header.
|
||||
@ -73,7 +73,11 @@ public:
|
||||
|
||||
/// Unite several pipelines together. Result pipeline would have common_header structure.
|
||||
/// If collector is used, it will collect only newly-added processors, but not processors from pipelines.
|
||||
void unitePipelines(std::vector<std::unique_ptr<QueryPipeline>> pipelines, const Block & common_header, size_t max_threads_limit = 0);
|
||||
static QueryPipeline unitePipelines(
|
||||
std::vector<std::unique_ptr<QueryPipeline>> pipelines,
|
||||
const Block & common_header,
|
||||
size_t max_threads_limit = 0,
|
||||
Processors * collected_processors = nullptr);
|
||||
|
||||
PipelineExecutorPtr execute();
|
||||
|
||||
@ -113,10 +117,9 @@ public:
|
||||
}
|
||||
|
||||
/// Convert query pipeline to pipe.
|
||||
Pipe getPipe() &&;
|
||||
static Pipe getPipe(QueryPipeline pipeline) { return std::move(pipeline.pipe); }
|
||||
|
||||
private:
|
||||
/// Destruction order: processors, header, locks, temporary storages, local contexts
|
||||
|
||||
Pipe pipe;
|
||||
IOutputFormat * output_format = nullptr;
|
||||
@ -132,6 +135,8 @@ private:
|
||||
|
||||
void initRowsBeforeLimit();
|
||||
|
||||
void setCollectedProcessors(Processors * processors);
|
||||
|
||||
friend class QueryPipelineProcessorsCollector;
|
||||
};
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user