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Merge pull request #59783 from ClickHouse/docs-edit-default-cloud-core-settings

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[Docs] Add default cloud core settings
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Alexey Milovidov 2024-02-09 18:06:23 +01:00 committed by GitHub
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docs/en/operations/settings/settings.md
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@ -508,7 +508,9 @@ Possible values:
- Any positive integer number of hops.
- 0 — No hops allowed.
Default value: 0.
Default value: `0`.
Cloud default value: `10`.
## insert_null_as_default {#insert_null_as_default}
@ -1126,7 +1128,9 @@ Possible values:
- 0 (or 1) — `INSERT SELECT` no parallel execution.
- Positive integer. Bigger than 1.
Default value: 0.
Default value: `0`.
Cloud default value: from `2` to `4`, depending on the service size.
Parallel `INSERT SELECT` has effect only if the `SELECT` part is executed in parallel, see [max_threads](#max_threads) setting.
Higher values will lead to higher memory usage.
@ -1207,7 +1211,9 @@ Default value: 10000.
Cancels HTTP read-only queries (e.g. SELECT) when a client closes the connection without waiting for the response.
Default value: 0
Default value: `0`.
Cloud default value: `1`.
## poll_interval {#poll-interval}
@ -1946,6 +1952,8 @@ Possible values:
Default value: `200`.
Cloud default value: `1000`.
### async_insert_poll_timeout_ms {#async-insert-poll-timeout-ms}
Timeout in milliseconds for polling data from asynchronous insert queue.
@ -2130,7 +2138,9 @@ Possible values:
- Positive integer.
- 0 — Retries are disabled
Default value: 0
Default value: 20
Cloud default value: `20`.
Keeper request retries are done after some timeout. The timeout is controlled by the following settings: `insert_keeper_retry_initial_backoff_ms`, `insert_keeper_retry_max_backoff_ms`.
The first retry is done after `insert_keeper_retry_initial_backoff_ms` timeout. The consequent timeouts will be calculated as follows:
@ -2660,6 +2670,8 @@ Type: [UInt64](../../sql-reference/data-types/int-uint.md).
Default value: 1000000000 nanoseconds (once a second).
**Temporarily disabled in ClickHouse Cloud.**
See also:
- System table [trace_log](../../operations/system-tables/trace_log.md/#system_tables-trace_log)
@ -2683,6 +2695,8 @@ Type: [UInt64](../../sql-reference/data-types/int-uint.md).
Default value: 1000000000 nanoseconds.
**Temporarily disabled in ClickHouse Cloud.**
See also:
- System table [trace_log](../../operations/system-tables/trace_log.md/#system_tables-trace_log)
@ -2804,6 +2818,8 @@ Possible values:
Default value: `0`.
Cloud default value: `1`.
**See Also**
- [Distributed Table Engine](../../engines/table-engines/special/distributed.md/#distributed)
@ -3319,7 +3335,9 @@ Possible values:
- a string representing any valid table engine name
Default value: `None`
Default value: `MergeTree`.
Cloud default value: `SharedMergeTree`.
**Example**
@ -3895,6 +3913,8 @@ Possible values:
Default value: `0`.
Cloud default value: `1`.
## database_replicated_initial_query_timeout_sec {#database_replicated_initial_query_timeout_sec}
Sets how long initial DDL query should wait for Replicated database to process previous DDL queue entries in seconds.
@ -3933,6 +3953,8 @@ Possible values:
Default value: `throw`.
Cloud default value: `none`.
## flatten_nested {#flatten-nested}
Sets the data format of a [nested](../../sql-reference/data-types/nested-data-structures/index.md) columns.
@ -4068,6 +4090,8 @@ Possible values:
Default value: `1`.
Cloud default value: `0`.
:::note
`alter_sync` is applicable to `Replicated` tables only, it does nothing to alters of not `Replicated` tables.
:::
@ -4723,6 +4747,8 @@ other connections are cancelled. Queries with `max_parallel_replicas > 1` are su
Enabled by default.
Disabled by default on Cloud.
## hedged_connection_timeout {#hedged_connection_timeout}
If we can't establish connection with replica after this timeout in hedged requests, we start working with the next replica without cancelling connection to the previous.
@ -5348,10 +5374,11 @@ Default value: `false`.
## max_partition_size_to_drop
Restriction on dropping partitions in query time.
Restriction on dropping partitions in query time. The value 0 means that you can drop partitions without any restrictions.
Default value: 50 GB.
The value 0 means that you can drop partitions without any restrictions.
Cloud default value: 1 TB.
:::note
This query setting overwrites its server setting equivalent, see [max_partition_size_to_drop](/docs/en/operations/server-configuration-parameters/settings.md/#max-partition-size-to-drop)
@ -5359,10 +5386,11 @@ This query setting overwrites its server setting equivalent, see [max_partition_
## max_table_size_to_drop
Restriction on deleting tables in query time.
Restriction on deleting tables in query time. The value 0 means that you can delete all tables without any restrictions.
Default value: 50 GB.
The value 0 means that you can delete all tables without any restrictions.
Cloud default value: 1 TB.
:::note
This query setting overwrites its server setting equivalent, see [max_table_size_to_drop](/docs/en/operations/server-configuration-parameters/settings.md/#max-table-size-to-drop)