* 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
7.8 KiB
machine_translated | machine_translated_rev | toc_priority | toc_title |
---|---|---|---|
true | 72537a2d52 |
59 | تاتر-کپی |
تاتر-کپی
کپی داده ها از جداول در یک خوشه به جداول در یکی دیگر از (یا همان) خوشه.
شما می توانید چند اجرا clickhouse-copier
نمونه بر روی سرور های مختلف برای انجام همان کار. باغ وحش برای همگام سازی فرایندها استفاده می شود.
پس از شروع, clickhouse-copier
:
-
قابلیت اتصال به باغ وحش و دریافت:
- شغل کپی.
- دولت از مشاغل کپی.
-
این کار را انجام می دهد.
هر فرایند در حال اجرا را انتخاب “closest” سفال از خوشه منبع و کپی داده ها را به خوشه مقصد, تغییر شکل داده ها در صورت لزوم.
clickhouse-copier
تغییرات باغ وحش را دنبال می کند و در پرواز اعمال می شود.
برای کاهش ترافیک شبکه توصیه می کنیم در حال اجرا clickhouse-copier
در همان سرور که داده های منبع واقع شده است.
در حال اجرا تاتر-کپی
ابزار باید به صورت دستی اجرا شود:
$ clickhouse-copier copier --daemon --config zookeeper.xml --task-path /task/path --base-dir /path/to/dir
پارامترها:
daemon
— Startsclickhouse-copier
در حالت شبح.config
— The path to thezookeeper.xml
فایل با پارامترهای اتصال به باغ وحش.task-path
— The path to the ZooKeeper node. This node is used for syncingclickhouse-copier
پردازش و ذخیره سازی وظایف. وظایف در ذخیره می شود$task-path/description
.task-file
— Optional path to file with task configuration for initial upload to ZooKeeper.task-upload-force
— Force uploadtask-file
حتی اگر گره در حال حاضر وجود دارد.base-dir
— The path to logs and auxiliary files. When it starts,clickhouse-copier
ایجادclickhouse-copier_YYYYMMHHSS_<PID>
زیرشاخه در$base-dir
. اگر این پارامتر حذف شده است, دایرکتوری ها در دایرکتوری که ایجادclickhouse-copier
راه اندازی شد.
قالب باغ وحش.شمع
<yandex>
<logger>
<level>trace</level>
<size>100M</size>
<count>3</count>
</logger>
<zookeeper>
<node index="1">
<host>127.0.0.1</host>
<port>2181</port>
</node>
</zookeeper>
</yandex>
پیکربندی وظایف کپی کردن
<yandex>
<!-- Configuration of clusters as in an ordinary server config -->
<remote_servers>
<source_cluster>
<shard>
<internal_replication>false</internal_replication>
<replica>
<host>127.0.0.1</host>
<port>9000</port>
</replica>
</shard>
...
</source_cluster>
<destination_cluster>
...
</destination_cluster>
</remote_servers>
<!-- How many simultaneously active workers are possible. If you run more workers superfluous workers will sleep. -->
<max_workers>2</max_workers>
<!-- Setting used to fetch (pull) data from source cluster tables -->
<settings_pull>
<readonly>1</readonly>
</settings_pull>
<!-- Setting used to insert (push) data to destination cluster tables -->
<settings_push>
<readonly>0</readonly>
</settings_push>
<!-- Common setting for fetch (pull) and insert (push) operations. Also, copier process context uses it.
They are overlaid by <settings_pull/> and <settings_push/> respectively. -->
<settings>
<connect_timeout>3</connect_timeout>
<!-- Sync insert is set forcibly, leave it here just in case. -->
<insert_distributed_sync>1</insert_distributed_sync>
</settings>
<!-- Copying tasks description.
You could specify several table task in the same task description (in the same ZooKeeper node), they will be performed
sequentially.
-->
<tables>
<!-- A table task, copies one table. -->
<table_hits>
<!-- Source cluster name (from <remote_servers/> section) and tables in it that should be copied -->
<cluster_pull>source_cluster</cluster_pull>
<database_pull>test</database_pull>
<table_pull>hits</table_pull>
<!-- Destination cluster name and tables in which the data should be inserted -->
<cluster_push>destination_cluster</cluster_push>
<database_push>test</database_push>
<table_push>hits2</table_push>
<!-- Engine of destination tables.
If destination tables have not be created, workers create them using columns definition from source tables and engine
definition from here.
NOTE: If the first worker starts insert data and detects that destination partition is not empty then the partition will
be dropped and refilled, take it into account if you already have some data in destination tables. You could directly
specify partitions that should be copied in <enabled_partitions/>, they should be in quoted format like partition column of
system.parts table.
-->
<engine>
ENGINE=ReplicatedMergeTree('/clickhouse/tables/{cluster}/{shard}/hits2', '{replica}')
PARTITION BY toMonday(date)
ORDER BY (CounterID, EventDate)
</engine>
<!-- Sharding key used to insert data to destination cluster -->
<sharding_key>jumpConsistentHash(intHash64(UserID), 2)</sharding_key>
<!-- Optional expression that filter data while pull them from source servers -->
<where_condition>CounterID != 0</where_condition>
<!-- This section specifies partitions that should be copied, other partition will be ignored.
Partition names should have the same format as
partition column of system.parts table (i.e. a quoted text).
Since partition key of source and destination cluster could be different,
these partition names specify destination partitions.
NOTE: In spite of this section is optional (if it is not specified, all partitions will be copied),
it is strictly recommended to specify them explicitly.
If you already have some ready partitions on destination cluster they
will be removed at the start of the copying since they will be interpeted
as unfinished data from the previous copying!!!
-->
<enabled_partitions>
<partition>'2018-02-26'</partition>
<partition>'2018-03-05'</partition>
...
</enabled_partitions>
</table_hits>
<!-- Next table to copy. It is not copied until previous table is copying. -->
</table_visits>
...
</table_visits>
...
</tables>
</yandex>
clickhouse-copier
پیگیری تغییرات در /task/path/description
و اونا رو تو پرواز بکار میبره برای مثال, اگر شما ارزش تغییر max_workers
تعداد فرایندهای در حال اجرا وظایف نیز تغییر خواهد کرد.