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Mention ON CLUSTER options for SYSTEM queries
This commit is contained in:
Raúl Marín
parent
5352a7a60e
commit
dcd5579851
@ -119,19 +119,35 @@ The compiled expression cache is enabled/disabled with the query/user/profile-le
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Resets the [query cache](../../operations/query-cache.md).
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```sql
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SYSTEM DROP QUERY CACHE [ON CLUSTER cluster_name]
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```
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## FLUSH LOGS
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Flushes buffered log messages to system tables, e.g. system.query_log. Mainly useful for debugging since most system tables have a default flush interval of 7.5 seconds.
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This will also create system tables even if message queue is empty.
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```sql
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SYSTEM FLUSH LOGS [ON CLUSTER cluster_name]
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```
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## RELOAD CONFIG
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Reloads ClickHouse configuration. Used when configuration is stored in ZooKeeper. Note that `SYSTEM RELOAD CONFIG` does not reload `USER` configuration stored in ZooKeeper, it only reloads `USER` configuration that is stored in `users.xml`. To reload all `USER` config use `SYSTEM RELOAD USERS`
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```sql
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SYSTEM RELOAD CONFIG [ON CLUSTER cluster_name]
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```
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## RELOAD USERS
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Reloads all access storages, including: users.xml, local disk access storage, replicated (in ZooKeeper) access storage.
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```sql
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SYSTEM RELOAD USERS [ON CLUSTER cluster_name]
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```
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## SHUTDOWN
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Normally shuts down ClickHouse (like `service clickhouse-server stop` / `kill {$pid_clickhouse-server}`)
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@ -149,7 +165,7 @@ ClickHouse can manage [distributed](../../engines/table-engines/special/distribu
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Disables background data distribution when inserting data into distributed tables.
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``` sql
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SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
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SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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### FLUSH DISTRIBUTED
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@ -157,7 +173,7 @@ SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
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Forces ClickHouse to send data to cluster nodes synchronously. If any nodes are unavailable, ClickHouse throws an exception and stops query execution. You can retry the query until it succeeds, which will happen when all nodes are back online.
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``` sql
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SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
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SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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### START DISTRIBUTED SENDS
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@ -165,7 +181,7 @@ SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
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Enables background data distribution when inserting data into distributed tables.
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``` sql
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SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name>
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SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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## Managing MergeTree Tables
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@ -177,7 +193,7 @@ ClickHouse can manage background processes in [MergeTree](../../engines/table-en
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Provides possibility to stop background merges for tables in the MergeTree family:
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``` sql
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SYSTEM STOP MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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SYSTEM STOP MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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```
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:::note
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@ -189,7 +205,7 @@ SYSTEM STOP MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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Provides possibility to start background merges for tables in the MergeTree family:
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``` sql
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SYSTEM START MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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SYSTEM START MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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```
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### STOP TTL MERGES
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@ -198,7 +214,7 @@ Provides possibility to stop background delete old data according to [TTL expres
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Returns `Ok.` even if table does not exist or table has not MergeTree engine. Returns error when database does not exist:
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``` sql
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SYSTEM STOP TTL MERGES [[db.]merge_tree_family_table_name]
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SYSTEM STOP TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### START TTL MERGES
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@ -207,7 +223,7 @@ Provides possibility to start background delete old data according to [TTL expre
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Returns `Ok.` even if table does not exist. Returns error when database does not exist:
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``` sql
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SYSTEM START TTL MERGES [[db.]merge_tree_family_table_name]
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SYSTEM START TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### STOP MOVES
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@ -216,7 +232,7 @@ Provides possibility to stop background move data according to [TTL table expres
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Returns `Ok.` even if table does not exist. Returns error when database does not exist:
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``` sql
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SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
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SYSTEM STOP MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### START MOVES
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@ -225,7 +241,7 @@ Provides possibility to start background move data according to [TTL table expre
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Returns `Ok.` even if table does not exist. Returns error when database does not exist:
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``` sql
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SYSTEM START MOVES [[db.]merge_tree_family_table_name]
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SYSTEM START MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### SYSTEM UNFREEZE {#query_language-system-unfreeze}
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@ -241,7 +257,7 @@ SYSTEM UNFREEZE WITH NAME <backup_name>
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Wait until all asynchronously loading data parts of a table (outdated data parts) will became loaded.
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``` sql
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SYSTEM WAIT LOADING PARTS [db.]merge_tree_family_table_name
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SYSTEM WAIT LOADING PARTS [ON CLUSTER cluster_name] [db.]merge_tree_family_table_name
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```
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## Managing ReplicatedMergeTree Tables
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@ -254,7 +270,7 @@ Provides possibility to stop background fetches for inserted parts for tables in
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Always returns `Ok.` regardless of the table engine and even if table or database does not exist.
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``` sql
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SYSTEM STOP FETCHES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM STOP FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### START FETCHES
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@ -263,7 +279,7 @@ Provides possibility to start background fetches for inserted parts for tables i
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Always returns `Ok.` regardless of the table engine and even if table or database does not exist.
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``` sql
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SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM START FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### STOP REPLICATED SENDS
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@ -271,7 +287,7 @@ SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
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Provides possibility to stop background sends to other replicas in cluster for new inserted parts for tables in the `ReplicatedMergeTree` family:
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``` sql
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SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
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SYSTEM STOP REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### START REPLICATED SENDS
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@ -279,7 +295,7 @@ SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
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Provides possibility to start background sends to other replicas in cluster for new inserted parts for tables in the `ReplicatedMergeTree` family:
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``` sql
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SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
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SYSTEM START REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### STOP REPLICATION QUEUES
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@ -287,7 +303,7 @@ SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
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Provides possibility to stop background fetch tasks from replication queues which stored in Zookeeper for tables in the `ReplicatedMergeTree` family. Possible background tasks types - merges, fetches, mutation, DDL statements with ON CLUSTER clause:
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``` sql
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SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM STOP REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### START REPLICATION QUEUES
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@ -295,7 +311,7 @@ SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
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Provides possibility to start background fetch tasks from replication queues which stored in Zookeeper for tables in the `ReplicatedMergeTree` family. Possible background tasks types - merges, fetches, mutation, DDL statements with ON CLUSTER clause:
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``` sql
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SYSTEM START REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM START REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### SYNC REPLICA
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@ -318,7 +334,7 @@ Provides possibility to reinitialize Zookeeper session's state for `ReplicatedMe
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Initialization of replication queue based on ZooKeeper data happens in the same way as for `ATTACH TABLE` statement. For a short time, the table will be unavailable for any operations.
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``` sql
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SYSTEM RESTART REPLICA [db.]replicated_merge_tree_family_table_name
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SYSTEM RESTART REPLICA [ON CLUSTER cluster_name] [db.]replicated_merge_tree_family_table_name
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```
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### RESTORE REPLICA
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@ -384,7 +400,7 @@ Provides possibility to reinitialize Zookeeper sessions state for all `Replicate
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Allows to drop filesystem cache.
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```sql
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SYSTEM DROP FILESYSTEM CACHE
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SYSTEM DROP FILESYSTEM CACHE [ON CLUSTER cluster_name]
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```
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### SYNC FILE CACHE
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@ -396,5 +412,5 @@ It's too heavy and has potential for misuse.
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Will do sync syscall.
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```sql
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SYSTEM SYNC FILE CACHE
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SYSTEM SYNC FILE CACHE [ON CLUSTER cluster_name]
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```
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@ -39,7 +39,7 @@ SELECT name, status FROM system.dictionaries;
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**Синтаксис**
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```sql
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SYSTEM RELOAD MODELS
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SYSTEM RELOAD MODELS [ON CLUSTER cluster_name]
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```
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## RELOAD MODEL {#query_language-system-reload-model}
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@ -49,7 +49,7 @@ SYSTEM RELOAD MODELS
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**Синтаксис**
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```sql
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SYSTEM RELOAD MODEL <model_path>
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SYSTEM RELOAD MODEL [ON CLUSTER cluster_name] <model_path>
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```
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## RELOAD FUNCTIONS {#query_language-system-reload-functions}
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@ -59,8 +59,8 @@ SYSTEM RELOAD MODEL <model_path>
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**Синтаксис**
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```sql
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RELOAD FUNCTIONS
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RELOAD FUNCTION function_name
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RELOAD FUNCTIONS [ON CLUSTER cluster_name]
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RELOAD FUNCTION function_name [ON CLUSTER cluster_name]
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```
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## DROP DNS CACHE {#query_language-system-drop-dns-cache}
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@ -106,10 +106,18 @@ Cкомпилированные выражения используются ко
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Записывает буферы логов в системные таблицы (например system.query_log). Позволяет не ждать 7.5 секунд при отладке.
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Если буфер логов пустой, то этот запрос просто создаст системные таблицы.
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```sql
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SYSTEM FLUSH LOGS [ON CLUSTER cluster_name]
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```
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## RELOAD CONFIG {#query_language-system-reload-config}
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Перечитывает конфигурацию настроек ClickHouse. Используется при хранении конфигурации в zookeeper.
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```sql
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SYSTEM RELOAD CONFIG [ON CLUSTER cluster_name]
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```
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## SHUTDOWN {#query_language-system-shutdown}
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Штатно завершает работу ClickHouse (аналог `service clickhouse-server stop` / `kill {$pid_clickhouse-server}`)
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@ -127,7 +135,7 @@ ClickHouse может оперировать [распределёнными](..
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Отключает фоновую отправку при вставке данных в распределённые таблицы.
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``` sql
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SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
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SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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### FLUSH DISTRIBUTED {#query_language-system-flush-distributed}
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@ -135,7 +143,7 @@ SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
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В синхронном режиме отправляет все данные на узлы кластера. Если какие-либо узлы недоступны, ClickHouse генерирует исключение и останавливает выполнение запроса. Такой запрос можно повторять до успешного завершения, что будет означать возвращение связанности с остальными узлами кластера.
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``` sql
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SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
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SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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### START DISTRIBUTED SENDS {#query_language-system-start-distributed-sends}
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@ -143,7 +151,7 @@ SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
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Включает фоновую отправку при вставке данных в распределенные таблицы.
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``` sql
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SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name>
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SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
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```
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## Managing MergeTree Tables {#query-language-system-mergetree}
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@ -155,7 +163,7 @@ ClickHouse может управлять фоновыми процессами
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Позволяет остановить фоновые мержи для таблиц семейства MergeTree:
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``` sql
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SYSTEM STOP MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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SYSTEM STOP MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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```
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:::note
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@ -166,7 +174,7 @@ SYSTEM STOP MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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Включает фоновые мержи для таблиц семейства MergeTree:
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``` sql
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SYSTEM START MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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SYSTEM START MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
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```
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### STOP TTL MERGES {#query_language-stop-ttl-merges}
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@ -175,7 +183,7 @@ SYSTEM START MERGES [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name
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Возвращает `Ok.` даже если указана несуществующая таблица или таблица имеет тип отличный от MergeTree. Возвращает ошибку если указана не существующая база данных:
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``` sql
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SYSTEM STOP TTL MERGES [[db.]merge_tree_family_table_name]
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SYSTEM STOP TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### START TTL MERGES {#query_language-start-ttl-merges}
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@ -184,7 +192,7 @@ SYSTEM STOP TTL MERGES [[db.]merge_tree_family_table_name]
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Возвращает `Ok.` даже если указана несуществующая таблица или таблица имеет тип отличный от MergeTree. Возвращает ошибку если указана не существующая база данных:
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``` sql
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SYSTEM START TTL MERGES [[db.]merge_tree_family_table_name]
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SYSTEM START TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### STOP MOVES {#query_language-stop-moves}
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@ -193,7 +201,7 @@ SYSTEM START TTL MERGES [[db.]merge_tree_family_table_name]
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Возвращает `Ok.` даже если указана несуществующая таблица или таблица имеет тип отличный от MergeTree. Возвращает ошибку если указана не существующая база данных:
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``` sql
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SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
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SYSTEM STOP MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### START MOVES {#query_language-start-moves}
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@ -202,7 +210,7 @@ SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
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Возвращает `Ok.` даже если указана несуществующая таблица или таблица имеет тип отличный от MergeTree. Возвращает ошибку если указана не существующая база данных:
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``` sql
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SYSTEM START MOVES [[db.]merge_tree_family_table_name]
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SYSTEM START MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
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```
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### SYSTEM UNFREEZE {#query_language-system-unfreeze}
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@ -223,7 +231,7 @@ ClickHouse может управлять фоновыми процессами
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Всегда возвращает `Ok.` вне зависимости от типа таблицы и даже если таблица или база данных не существет.
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``` sql
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SYSTEM STOP FETCHES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM STOP FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### START FETCHES {#query_language-system-start-fetches}
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@ -232,7 +240,7 @@ SYSTEM STOP FETCHES [[db.]replicated_merge_tree_family_table_name]
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Всегда возвращает `Ok.` вне зависимости от типа таблицы и даже если таблица или база данных не существет.
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``` sql
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SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
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SYSTEM START FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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### STOP REPLICATED SENDS {#query_language-system-start-replicated-sends}
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@ -240,7 +248,7 @@ SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
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Позволяет остановить фоновые процессы отсылки новых вставленных кусков данных другим репликам в кластере для таблиц семейства `ReplicatedMergeTree`:
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``` sql
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SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
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SYSTEM STOP REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
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```
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|
||||
### START REPLICATED SENDS {#query_language-system-start-replicated-sends}
|
||||
@ -248,7 +256,7 @@ SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
Позволяет запустить фоновые процессы отсылки новых вставленных кусков данных другим репликам в кластере для таблиц семейства `ReplicatedMergeTree`:
|
||||
|
||||
``` sql
|
||||
SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM START REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### STOP REPLICATION QUEUES {#query_language-system-stop-replication-queues}
|
||||
@ -256,7 +264,7 @@ SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
Останавливает фоновые процессы разбора заданий из очереди репликации которая хранится в Zookeeper для таблиц семейства `ReplicatedMergeTree`. Возможные типы заданий - merges, fetches, mutation, DDL запросы с ON CLUSTER:
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM STOP REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START REPLICATION QUEUES {#query_language-system-start-replication-queues}
|
||||
@ -264,7 +272,7 @@ SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
Запускает фоновые процессы разбора заданий из очереди репликации которая хранится в Zookeeper для таблиц семейства `ReplicatedMergeTree`. Возможные типы заданий - merges, fetches, mutation, DDL запросы с ON CLUSTER:
|
||||
|
||||
``` sql
|
||||
SYSTEM START REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM START REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### SYNC REPLICA {#query_language-system-sync-replica}
|
||||
@ -287,7 +295,7 @@ SYSTEM SYNC REPLICA [db.]replicated_merge_tree_family_table_name [STRICT | LIGHT
|
||||
Инициализация очереди репликации на основе данных ZooKeeper происходит так же, как при `ATTACH TABLE`. Некоторое время таблица будет недоступна для любых операций.
|
||||
|
||||
``` sql
|
||||
SYSTEM RESTART REPLICA [db.]replicated_merge_tree_family_table_name
|
||||
SYSTEM RESTART REPLICA [ON CLUSTER cluster_name] [db.]replicated_merge_tree_family_table_name
|
||||
```
|
||||
|
||||
### RESTORE REPLICA {#query_language-system-restore-replica}
|
||||
|
||||
@ -71,10 +71,18 @@ SYSTEM DROP REPLICA 'replica_name' FROM ZKPATH '/path/to/table/in/zk';
|
||||
|
||||
将日志信息缓冲数据刷入系统表（例如system.query_log）。调试时允许等待不超过7.5秒。当信息队列为空时，会创建系统表。
|
||||
|
||||
```sql
|
||||
SYSTEM FLUSH LOGS [ON CLUSTER cluster_name]
|
||||
```
|
||||
|
||||
## RELOAD CONFIG {#query_language-system-reload-config}
|
||||
|
||||
重新加载ClickHouse的配置。用于当配置信息存放在ZooKeeper时。
|
||||
|
||||
```sql
|
||||
SYSTEM RELOAD CONFIG [ON CLUSTER cluster_name]
|
||||
```
|
||||
|
||||
## SHUTDOWN {#query_language-system-shutdown}
|
||||
|
||||
关闭ClickHouse服务（类似于 `service clickhouse-server stop` / `kill {$pid_clickhouse-server}`）
|
||||
@ -93,7 +101,7 @@ ClickHouse可以管理 [distribute](../../engines/table-engines/special/distribu
|
||||
当向分布式表插入数据时，禁用后台的分布式数据分发。
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
|
||||
SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
|
||||
```
|
||||
|
||||
### FLUSH DISTRIBUTED {#query_language-system-flush-distributed}
|
||||
@ -101,7 +109,7 @@ SYSTEM STOP DISTRIBUTED SENDS [db.]<distributed_table_name>
|
||||
强制让ClickHouse同步向集群节点同步发送数据。如果有节点失效，ClickHouse抛出异常并停止插入操作。当所有节点都恢复上线时，你可以重试之前的操作直到成功执行。
|
||||
|
||||
``` sql
|
||||
SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
|
||||
SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name> [ON CLUSTER cluster_name]
|
||||
```
|
||||
|
||||
### START DISTRIBUTED SENDS {#query_language-system-start-distributed-sends}
|
||||
@ -109,7 +117,7 @@ SYSTEM FLUSH DISTRIBUTED [db.]<distributed_table_name>
|
||||
当向分布式表插入数据时，允许后台的分布式数据分发。
|
||||
|
||||
``` sql
|
||||
SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name>
|
||||
SYSTEM START DISTRIBUTED SENDS [db.]<distributed_table_name> [ON CLUSTER cluster_name]
|
||||
```
|
||||
|
||||
## Managing MergeTree Tables {#query-language-system-mergetree}
|
||||
@ -121,7 +129,7 @@ ClickHouse可以管理 [MergeTree](../../engines/table-engines/mergetree-family/
|
||||
为MergeTree系列引擎表停止后台合并操作。
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP MERGES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM STOP MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
:::note
|
||||
@ -133,7 +141,7 @@ SYSTEM STOP MERGES [[db.]merge_tree_family_table_name]
|
||||
为MergeTree系列引擎表启动后台合并操作。
|
||||
|
||||
``` sql
|
||||
SYSTEM START MERGES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM START MERGES [ON CLUSTER cluster_name] [ON VOLUME <volume_name> | [db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### STOP TTL MERGES {#query_language-stop-ttl-merges}
|
||||
@ -142,7 +150,7 @@ SYSTEM START MERGES [[db.]merge_tree_family_table_name]
|
||||
不管表存在与否，都返回 `OK.`。当数据库不存在时返回错误。
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP TTL MERGES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM STOP TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START TTL MERGES {#query_language-start-ttl-merges}
|
||||
@ -151,7 +159,7 @@ SYSTEM STOP TTL MERGES [[db.]merge_tree_family_table_name]
|
||||
|
||||
|
||||
``` sql
|
||||
SYSTEM START TTL MERGES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM START TTL MERGES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### STOP MOVES {#query_language-stop-moves}
|
||||
@ -160,7 +168,7 @@ SYSTEM START TTL MERGES [[db.]merge_tree_family_table_name]
|
||||
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM STOP MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START MOVES {#query_language-start-moves}
|
||||
@ -169,7 +177,7 @@ SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
|
||||
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP MOVES [[db.]merge_tree_family_table_name]
|
||||
SYSTEM START MOVES [ON CLUSTER cluster_name] [[db.]merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### SYSTEM UNFREEZE {#query_language-system-unfreeze}
|
||||
@ -190,7 +198,7 @@ SYSTEM UNFREEZE WITH NAME <backup_name>
|
||||
不管表引擎类型如何或表/数据库是否存，都返回 `OK.`。
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP FETCHES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM STOP FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START FETCHES {#query_language-system-start-fetches}
|
||||
@ -199,7 +207,7 @@ SYSTEM STOP FETCHES [[db.]replicated_merge_tree_family_table_name]
|
||||
不管表引擎类型如何或表/数据库是否存，都返回 `OK.`。
|
||||
|
||||
``` sql
|
||||
SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM START FETCHES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### STOP REPLICATED SENDS {#query_language-system-start-replicated-sends}
|
||||
@ -207,7 +215,7 @@ SYSTEM START FETCHES [[db.]replicated_merge_tree_family_table_name]
|
||||
停止通过后台分发 `ReplicatedMergeTree`系列引擎表中新插入的数据块到集群的其它副本节点。
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM STOP REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START REPLICATED SENDS {#query_language-system-start-replicated-sends}
|
||||
@ -215,7 +223,7 @@ SYSTEM STOP REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
启动通过后台分发 `ReplicatedMergeTree`系列引擎表中新插入的数据块到集群的其它副本节点。
|
||||
|
||||
``` sql
|
||||
SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM START REPLICATED SENDS [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### STOP REPLICATION QUEUES {#query_language-system-stop-replication-queues}
|
||||
@ -224,7 +232,7 @@ SYSTEM START REPLICATED SENDS [[db.]replicated_merge_tree_family_table_name]
|
||||
停止从Zookeeper中获取 `ReplicatedMergeTree`系列表的复制队列的后台任务。可能的后台任务类型包含：merges, fetches, mutation，带有 `ON CLUSTER`的ddl语句
|
||||
|
||||
``` sql
|
||||
SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM STOP REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### START REPLICATION QUEUES {#query_language-system-start-replication-queues}
|
||||
@ -232,7 +240,7 @@ SYSTEM STOP REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
启动从Zookeeper中获取 `ReplicatedMergeTree`系列表的复制队列的后台任务。可能的后台任务类型包含：merges, fetches, mutation，带有 `ON CLUSTER`的ddl语句
|
||||
|
||||
``` sql
|
||||
SYSTEM START REPLICATION QUEUES [[db.]replicated_merge_tree_family_table_name]
|
||||
SYSTEM START REPLICATION QUEUES [ON CLUSTER cluster_name] [[db.]replicated_merge_tree_family_table_name]
|
||||
```
|
||||
|
||||
### SYNC REPLICA {#query_language-system-sync-replica}
|
||||
@ -250,7 +258,7 @@ SYSTEM SYNC REPLICA [db.]replicated_merge_tree_family_table_name [STRICT | LIGHT
|
||||
|
||||
|
||||
``` sql
|
||||
SYSTEM RESTART REPLICA [db.]replicated_merge_tree_family_table_name
|
||||
SYSTEM RESTART REPLICA [ON CLUSTER cluster_name] [db.]replicated_merge_tree_family_table_name
|
||||
```
|
||||
|
||||
### RESTART REPLICAS {#query_language-system-restart-replicas}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user