ClickHouse/src/Interpreters/TextLog.cpp
Alexander Kuzmenkov 087d8ab020 A follow-up for trace log overflow in perftests
The start was in https://github.com/ClickHouse/ClickHouse/pull/11026
It turned out that the problem was due to the incorrect mutate()
implementation that lead to quadratic amount of column copying. This
problem has since been fixed.

Remove the excessively verbose logging, and also change appendToBlock of
LogElement's to accept mutable columns instead of accepting a block and
mutating it on each call. It looks wasteful, even though it is almost a
noop.
2020-05-21 23:40:23 +03:00

83 lines
3.4 KiB
C++

#include <Interpreters/TextLog.h>
#include <DataTypes/DataTypeEnum.h>
#include <DataTypes/DataTypesNumber.h>
#include <DataTypes/DataTypeDateTime.h>
#include <DataTypes/DataTypeDate.h>
#include <DataTypes/DataTypeString.h>
#include <Common/ClickHouseRevision.h>
#include <array>
namespace DB
{
Block TextLogElement::createBlock()
{
auto priority_datatype = std::make_shared<DataTypeEnum8>(
DataTypeEnum8::Values
{
{"Fatal", static_cast<Int8>(Message::PRIO_FATAL)},
{"Critical", static_cast<Int8>(Message::PRIO_CRITICAL)},
{"Error", static_cast<Int8>(Message::PRIO_ERROR)},
{"Warning", static_cast<Int8>(Message::PRIO_WARNING)},
{"Notice", static_cast<Int8>(Message::PRIO_NOTICE)},
{"Information", static_cast<Int8>(Message::PRIO_INFORMATION)},
{"Debug", static_cast<Int8>(Message::PRIO_DEBUG)},
{"Trace", static_cast<Int8>(Message::PRIO_TRACE)}
});
return
{
{std::make_shared<DataTypeDate>(), "event_date"},
{std::make_shared<DataTypeDateTime>(), "event_time"},
{std::make_shared<DataTypeUInt32>(), "microseconds"},
{std::make_shared<DataTypeLowCardinality>(std::make_shared<DataTypeString>()), "thread_name"},
{std::make_shared<DataTypeUInt64>(), "thread_id"},
{std::move(priority_datatype), "level"},
{std::make_shared<DataTypeString>(), "query_id"},
{std::make_shared<DataTypeLowCardinality>(std::make_shared<DataTypeString>()), "logger_name"},
{std::make_shared<DataTypeString>(), "message"},
{std::make_shared<DataTypeUInt32>(), "revision"},
{std::make_shared<DataTypeLowCardinality>(std::make_shared<DataTypeString>()), "source_file"},
{std::make_shared<DataTypeUInt64>(), "source_line"}
};
}
void TextLogElement::appendToBlock(MutableColumns & columns) const
{
size_t i = 0;
columns[i++]->insert(DateLUT::instance().toDayNum(event_time));
columns[i++]->insert(event_time);
columns[i++]->insert(microseconds);
columns[i++]->insertData(thread_name.data(), thread_name.size());
columns[i++]->insert(thread_id);
columns[i++]->insert(level);
columns[i++]->insert(query_id);
columns[i++]->insert(logger_name);
columns[i++]->insert(message);
columns[i++]->insert(ClickHouseRevision::get());
columns[i++]->insert(source_file);
columns[i++]->insert(source_line);
}
TextLog::TextLog(Context & context_, const String & database_name_,
const String & table_name_, const String & storage_def_,
size_t flush_interval_milliseconds_)
: SystemLog<TextLogElement>(context_, database_name_, table_name_,
storage_def_, flush_interval_milliseconds_)
{
// SystemLog methods may write text logs, so we disable logging for the text
// log table to avoid recursion.
log->setLevel(0);
}
}