ClickHouse/docs/tr/sql-reference/functions/introspection.md
Ivan Blinkov cd14f9ebcb
SQL reference refactoring (#10857)
* split up select.md

* array-join.md basic refactoring

* distinct.md basic refactoring

* format.md basic refactoring

* from.md basic refactoring

* group-by.md basic refactoring

* having.md basic refactoring

* additional index.md refactoring

* into-outfile.md basic refactoring

* join.md basic refactoring

* limit.md basic refactoring

* limit-by.md basic refactoring

* order-by.md basic refactoring

* prewhere.md basic refactoring

* adjust operators/index.md links

* adjust sample.md links

* adjust more links

* adjust operatots links

* fix some links

* adjust aggregate function article titles

* basic refactor of remaining select clauses

* absolute paths in make_links.sh

* run make_links.sh

* remove old select.md locations

* translate docs/es

* translate docs/fr

* translate docs/fa

* remove old operators.md location

* change operators.md links

* adjust links in docs/es

* adjust links in docs/es

* minor texts adjustments

* wip

* update machine translations to use new links

* fix changelog

* es build fixes

* get rid of some select.md links

* temporary adjust ru links

* temporary adjust more ru links

* improve curly brace handling

* adjust ru as well

* fa build fix

* ru link fixes

* zh link fixes

* temporary disable part of anchor checks
2020-05-15 07:34:54 +03:00

11 KiB
Raw Blame History

machine_translated machine_translated_rev toc_priority toc_title
true 72537a2d52 65 İçgözlem

İç Gözlem Fonksiyonları

İç gözlem için bu bölümde açıklanan işlevleri kullanabilirsiniz ELF ve DWARF sorgu profilleme için.

!!! warning "Uyarıcı" Bu işlevler yavaştır ve güvenlik konuları getirebilir.

İç gözlem fonksiyonlarının düzgün çalışması için:

  • Yüklemek clickhouse-common-static-dbg paket.

  • Ayarla... allow_introspection_functions ayar 1.

    For security reasons introspection functions are disabled by default.
    

ClickHouse için profiler raporları kaydeder trace_log sistem tablosu. Tablo ve profiler düzgün yapılandırıldığından emin olun.

addressToLine

ClickHouse sunucu işleminin içindeki sanal bellek adresini dosya adına ve clickhouse kaynak kodundaki satır numarasına dönüştürür.

Resmi ClickHouse paketleri kullanırsanız, yüklemeniz gerekir clickhouse-common-static-dbg paket.

Sözdizimi

addressToLine(address_of_binary_instruction)

Parametre

  • address_of_binary_instruction (Uİnt64) — Address of instruction in a running process.

Döndürülen değer

  • Kaynak kodu dosya adı ve bu dosyadaki satır numarası iki nokta üst üste ile sınırlandırılmıştır.

    For example, `/build/obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:199`, where `199` is a line number.
    
  • Işlev hata ayıklama bilgilerini bulamadıysanız, bir ikili adı.

  • Adres geçerli değilse, boş dize.

Tür: Dize.

Örnek

İç gözlem işlevlerini etkinleştirme:

SET allow_introspection_functions=1

İlk dizeyi seçme trace_log sistem tablosu:

SELECT * FROM system.trace_log LIMIT 1 \G
Row 1:
──────
event_date:              2019-11-19
event_time:              2019-11-19 18:57:23
revision:                54429
timer_type:              Real
thread_number:           48
query_id:                421b6855-1858-45a5-8f37-f383409d6d72
trace:                   [140658411141617,94784174532828,94784076370703,94784076372094,94784076361020,94784175007680,140658411116251,140658403895439]

Bu trace alan, örnekleme anında yığın izini içerir.

Tek bir adres için kaynak kodu dosya adını ve satır numarasını alma:

SELECT addressToLine(94784076370703) \G
Row 1:
──────
addressToLine(94784076370703): /build/obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:199

İşlevin tüm yığın izine uygulanması:

SELECT
    arrayStringConcat(arrayMap(x -> addressToLine(x), trace), '\n') AS trace_source_code_lines
FROM system.trace_log
LIMIT 1
\G

Bu arrayMap işlev, her bir elemanın işlenmesini sağlar trace ar arrayray by the addressToLine İşlev. Gördüğünüz bu işlemin sonucu trace_source_code_lines çıktı sütunu.

Row 1:
──────
trace_source_code_lines: /lib/x86_64-linux-gnu/libpthread-2.27.so
/usr/lib/debug/usr/bin/clickhouse
/build/obj-x86_64-linux-gnu/../src/Common/ThreadPool.cpp:199
/build/obj-x86_64-linux-gnu/../src/Common/ThreadPool.h:155
/usr/include/c++/9/bits/atomic_base.h:551
/usr/lib/debug/usr/bin/clickhouse
/lib/x86_64-linux-gnu/libpthread-2.27.so
/build/glibc-OTsEL5/glibc-2.27/misc/../sysdeps/unix/sysv/linux/x86_64/clone.S:97

addressToSymbol

Clickhouse sunucu işlemi içindeki sanal bellek adresini ClickHouse nesne dosyalarından gelen simgeye dönüştürür.

Sözdizimi

addressToSymbol(address_of_binary_instruction)

Parametre

  • address_of_binary_instruction (Uİnt64) — Address of instruction in a running process.

Döndürülen değer

  • ClickHouse nesne dosyalarından sembol.
  • Adres geçerli değilse, boş dize.

Tür: Dize.

Örnek

İç gözlem işlevlerini etkinleştirme:

SET allow_introspection_functions=1

İlk dizeyi seçme trace_log sistem tablosu:

SELECT * FROM system.trace_log LIMIT 1 \G
Row 1:
──────
event_date:    2019-11-20
event_time:    2019-11-20 16:57:59
revision:      54429
timer_type:    Real
thread_number: 48
query_id:      724028bf-f550-45aa-910d-2af6212b94ac
trace:         [94138803686098,94138815010911,94138815096522,94138815101224,94138815102091,94138814222988,94138806823642,94138814457211,94138806823642,94138814457211,94138806823642,94138806795179,94138806796144,94138753770094,94138753771646,94138753760572,94138852407232,140399185266395,140399178045583]

Bu trace alan, örnekleme anında yığın izini içerir.

Tek bir adres için sembol alma:

SELECT addressToSymbol(94138803686098) \G
Row 1:
──────
addressToSymbol(94138803686098): _ZNK2DB24IAggregateFunctionHelperINS_20AggregateFunctionSumImmNS_24AggregateFunctionSumDataImEEEEE19addBatchSinglePlaceEmPcPPKNS_7IColumnEPNS_5ArenaE

İşlevin tüm yığın izine uygulanması:

SELECT
    arrayStringConcat(arrayMap(x -> addressToSymbol(x), trace), '\n') AS trace_symbols
FROM system.trace_log
LIMIT 1
\G

Bu arrayMap işlev, her bir elemanın işlenmesini sağlar trace ar arrayray by the addressToSymbols İşlev. Gördüğünüz bu işlemin sonucu trace_symbols çıktı sütunu.

Row 1:
──────
trace_symbols: _ZNK2DB24IAggregateFunctionHelperINS_20AggregateFunctionSumImmNS_24AggregateFunctionSumDataImEEEEE19addBatchSinglePlaceEmPcPPKNS_7IColumnEPNS_5ArenaE
_ZNK2DB10Aggregator21executeWithoutKeyImplERPcmPNS0_28AggregateFunctionInstructionEPNS_5ArenaE
_ZN2DB10Aggregator14executeOnBlockESt6vectorIN3COWINS_7IColumnEE13immutable_ptrIS3_EESaIS6_EEmRNS_22AggregatedDataVariantsERS1_IPKS3_SaISC_EERS1_ISE_SaISE_EERb
_ZN2DB10Aggregator14executeOnBlockERKNS_5BlockERNS_22AggregatedDataVariantsERSt6vectorIPKNS_7IColumnESaIS9_EERS6_ISB_SaISB_EERb
_ZN2DB10Aggregator7executeERKSt10shared_ptrINS_17IBlockInputStreamEERNS_22AggregatedDataVariantsE
_ZN2DB27AggregatingBlockInputStream8readImplEv
_ZN2DB17IBlockInputStream4readEv
_ZN2DB26ExpressionBlockInputStream8readImplEv
_ZN2DB17IBlockInputStream4readEv
_ZN2DB26ExpressionBlockInputStream8readImplEv
_ZN2DB17IBlockInputStream4readEv
_ZN2DB28AsynchronousBlockInputStream9calculateEv
_ZNSt17_Function_handlerIFvvEZN2DB28AsynchronousBlockInputStream4nextEvEUlvE_E9_M_invokeERKSt9_Any_data
_ZN14ThreadPoolImplI20ThreadFromGlobalPoolE6workerESt14_List_iteratorIS0_E
_ZZN20ThreadFromGlobalPoolC4IZN14ThreadPoolImplIS_E12scheduleImplIvEET_St8functionIFvvEEiSt8optionalImEEUlvE1_JEEEOS4_DpOT0_ENKUlvE_clEv
_ZN14ThreadPoolImplISt6threadE6workerESt14_List_iteratorIS0_E
execute_native_thread_routine
start_thread
clone

demangle

Kullanarak alabileceğiniz bir sembolü dönüştürür addressToSymbol C++ işlev adına işlev.

Sözdizimi

demangle(symbol)

Parametre

  • symbol (Dize) — Symbol from an object file.

Döndürülen değer

  • C++ işlevinin adı.
  • Bir sembol geçerli değilse boş dize.

Tür: Dize.

Örnek

İç gözlem işlevlerini etkinleştirme:

SET allow_introspection_functions=1

İlk dizeyi seçme trace_log sistem tablosu:

SELECT * FROM system.trace_log LIMIT 1 \G
Row 1:
──────
event_date:    2019-11-20
event_time:    2019-11-20 16:57:59
revision:      54429
timer_type:    Real
thread_number: 48
query_id:      724028bf-f550-45aa-910d-2af6212b94ac
trace:         [94138803686098,94138815010911,94138815096522,94138815101224,94138815102091,94138814222988,94138806823642,94138814457211,94138806823642,94138814457211,94138806823642,94138806795179,94138806796144,94138753770094,94138753771646,94138753760572,94138852407232,140399185266395,140399178045583]

Bu trace alan, örnekleme anında yığın izini içerir.

Tek bir adres için bir işlev adı alma:

SELECT demangle(addressToSymbol(94138803686098)) \G
Row 1:
──────
demangle(addressToSymbol(94138803686098)): DB::IAggregateFunctionHelper<DB::AggregateFunctionSum<unsigned long, unsigned long, DB::AggregateFunctionSumData<unsigned long> > >::addBatchSinglePlace(unsigned long, char*, DB::IColumn const**, DB::Arena*) const

İşlevin tüm yığın izine uygulanması:

SELECT
    arrayStringConcat(arrayMap(x -> demangle(addressToSymbol(x)), trace), '\n') AS trace_functions
FROM system.trace_log
LIMIT 1
\G

Bu arrayMap işlev, her bir elemanın işlenmesini sağlar trace ar arrayray by the demangle İşlev. Gördüğünüz bu işlemin sonucu trace_functions çıktı sütunu.

Row 1:
──────
trace_functions: DB::IAggregateFunctionHelper<DB::AggregateFunctionSum<unsigned long, unsigned long, DB::AggregateFunctionSumData<unsigned long> > >::addBatchSinglePlace(unsigned long, char*, DB::IColumn const**, DB::Arena*) const
DB::Aggregator::executeWithoutKeyImpl(char*&, unsigned long, DB::Aggregator::AggregateFunctionInstruction*, DB::Arena*) const
DB::Aggregator::executeOnBlock(std::vector<COW<DB::IColumn>::immutable_ptr<DB::IColumn>, std::allocator<COW<DB::IColumn>::immutable_ptr<DB::IColumn> > >, unsigned long, DB::AggregatedDataVariants&, std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> >&, std::vector<std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> >, std::allocator<std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> > > >&, bool&)
DB::Aggregator::executeOnBlock(DB::Block const&, DB::AggregatedDataVariants&, std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> >&, std::vector<std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> >, std::allocator<std::vector<DB::IColumn const*, std::allocator<DB::IColumn const*> > > >&, bool&)
DB::Aggregator::execute(std::shared_ptr<DB::IBlockInputStream> const&, DB::AggregatedDataVariants&)
DB::AggregatingBlockInputStream::readImpl()
DB::IBlockInputStream::read()
DB::ExpressionBlockInputStream::readImpl()
DB::IBlockInputStream::read()
DB::ExpressionBlockInputStream::readImpl()
DB::IBlockInputStream::read()
DB::AsynchronousBlockInputStream::calculate()
std::_Function_handler<void (), DB::AsynchronousBlockInputStream::next()::{lambda()#1}>::_M_invoke(std::_Any_data const&)
ThreadPoolImpl<ThreadFromGlobalPool>::worker(std::_List_iterator<ThreadFromGlobalPool>)
ThreadFromGlobalPool::ThreadFromGlobalPool<ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::function<void ()>, int, std::optional<unsigned long>)::{lambda()#3}>(ThreadPoolImpl<ThreadFromGlobalPool>::scheduleImpl<void>(std::function<void ()>, int, std::optional<unsigned long>)::{lambda()#3}&&)::{lambda()#1}::operator()() const
ThreadPoolImpl<std::thread>::worker(std::_List_iterator<std::thread>)
execute_native_thread_routine
start_thread
clone