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

[Docs] Add default cloud core settings

docs/en/operations/settings/settings.md

@@ -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)