thevar1able/ClickHouse
1
0
Fork 0
mirror of https://github.com/ClickHouse/ClickHouse.git synced 2024-11-22 07:31:57 +00:00
Code Issues Packages Projects Releases Wiki Activity

DOCS-590: parallel_distributed_insert_select (#12980)

Browse Source 
* DOCSUP-987: parallel_distributed_insert_select setting (#145)

* add EN version

* add EN version

* changes after review in EN version

* add RU version

* CLICKHOUSEDOCS-590: Updated text

Co-authored-by: Evgenia Sudarikova <56156889+otrazhenia@users.noreply.github.com>
Co-authored-by: Sergei Shtykov <bayonet@yandex-team.ru>
This commit is contained in:
BayoNet 2020-07-28 15:25:49 +03:00 committed by GitHub
parent 7a22717180
commit 6dd731dd00
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 27 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
docs/en/operations/settings/settings.md
View File

@ -1459,6 +1459,20 @@ Possible values:
Default value: 16.
## parallel_distributed_insert_select {#parallel_distributed_insert_select}
Enables parallel distributed `INSERT ... SELECT` query.
If we execute `INSERT INTO distributed_table_a SELECT ... FROM distributed_table_b` queries and both tables use the same cluster, and both tables are either [replicated](../../engines/table-engines/mergetree-family/replication.md) or non-replicated, then this query is processed locally on every shard.
Possible values:
- 0 — Disabled.
- 1 — Enabled.
Default value: 0.
## insert_distributed_sync {#insert_distributed_sync}
Enables or disables synchronous data insertion into a [Distributed](../../engines/table-engines/special/distributed.md#distributed) table.

13
docs/ru/operations/settings/settings.md
View File

@ -1278,6 +1278,19 @@ Default value: 0.
Значение по умолчанию: 16.
## parallel_distributed_insert_select {#parallel_distributed_insert_select}
Включает параллельную обработку распределённых запросов `INSERT ... SELECT`.
Если при выполнении запроса `INSERT INTO distributed_table_a SELECT ... FROM distributed_table_b` оказывается, что обе таблицы находятся в одном кластере, то независимо от того [реплицируемые](../../engines/table-engines/mergetree-family/replication.md) они или нет, запрос выполняется локально на каждом шарде.
Допустимые значения:
- 0 — выключена.
- 1 — включена.
Значение по умолчанию: 0.
## insert_distributed_sync {#insert_distributed_sync}
Включает или отключает режим синхронного добавления данных в распределенные таблицы (таблицы с движком [Distributed](../../engines/table-engines/special/distributed.md#distributed)).