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91 lines
3.3 KiB
C++
91 lines
3.3 KiB
C++
#include <Storages/MergeTree/MergeList.h>
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#include <Storages/MergeTree/MergeTreeDataMergerMutator.h>
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#include <Common/CurrentMetrics.h>
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#include <common/getThreadId.h>
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#include <Common/CurrentThread.h>
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namespace CurrentMetrics
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{
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extern const Metric MemoryTrackingForMerges;
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}
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namespace DB
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{
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MergeListElement::MergeListElement(const std::string & database_, const std::string & table_, const FutureMergedMutatedPart & future_part)
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: database{database_}, table{table_}, partition_id{future_part.part_info.partition_id}
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, result_part_name{future_part.name}
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, result_part_path{future_part.path}
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, result_data_version{future_part.part_info.getDataVersion()}
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, num_parts{future_part.parts.size()}
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, thread_id{getThreadId()}
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{
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for (const auto & source_part : future_part.parts)
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{
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source_part_names.emplace_back(source_part->name);
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source_part_paths.emplace_back(source_part->getFullPath());
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total_size_bytes_compressed += source_part->getBytesOnDisk();
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total_size_marks += source_part->getMarksCount();
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total_rows_count += source_part->index_granularity.getTotalRows();
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}
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if (!future_part.parts.empty())
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{
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source_data_version = future_part.parts[0]->info.getDataVersion();
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is_mutation = (result_data_version != source_data_version);
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}
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/// Each merge is executed into separate background processing pool thread
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background_thread_memory_tracker = CurrentThread::getMemoryTracker();
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if (background_thread_memory_tracker)
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{
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memory_tracker.setMetric(CurrentMetrics::MemoryTrackingForMerges);
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background_thread_memory_tracker_prev_parent = background_thread_memory_tracker->getParent();
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background_thread_memory_tracker->setParent(&memory_tracker);
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}
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}
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MergeInfo MergeListElement::getInfo() const
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{
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MergeInfo res;
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res.database = database;
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res.table = table;
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res.result_part_name = result_part_name;
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res.result_part_path = result_part_path;
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res.partition_id = partition_id;
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res.is_mutation = is_mutation;
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res.elapsed = watch.elapsedSeconds();
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res.progress = progress.load(std::memory_order_relaxed);
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res.num_parts = num_parts;
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res.total_size_bytes_compressed = total_size_bytes_compressed;
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res.total_size_marks = total_size_marks;
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res.total_rows_count = total_rows_count;
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res.bytes_read_uncompressed = bytes_read_uncompressed.load(std::memory_order_relaxed);
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res.bytes_written_uncompressed = bytes_written_uncompressed.load(std::memory_order_relaxed);
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res.rows_read = rows_read.load(std::memory_order_relaxed);
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res.rows_written = rows_written.load(std::memory_order_relaxed);
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res.columns_written = columns_written.load(std::memory_order_relaxed);
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res.memory_usage = memory_tracker.get();
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res.thread_id = thread_id;
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for (const auto & source_part_name : source_part_names)
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res.source_part_names.emplace_back(source_part_name);
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for (const auto & source_part_path : source_part_paths)
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res.source_part_paths.emplace_back(source_part_path);
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return res;
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}
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MergeListElement::~MergeListElement()
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{
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/// Unplug memory_tracker from current background processing pool thread
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if (background_thread_memory_tracker)
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background_thread_memory_tracker->setParent(background_thread_memory_tracker_prev_parent);
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}
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}
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