From 8b8c57432bf9900904dc9fd02d2e885e93cd7f6b Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 11:21:03 +0300 Subject: [PATCH 1/7] Update request rate limits enforcement policy details Clarified the multiplication of rate limits for queries and management commands across multiple admin nodes and query head nodes. --- .../management/request-rate-limits-enforcement-policy.md | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md index 071374dc44..ec46cc43bc 100644 --- a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md +++ b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md @@ -31,11 +31,13 @@ Request rate limits can be enforced at one of the following levels: * `Database`: * Rate limits are enforced by the database admin node that manages the database the request was sent to. * If there are multiple database admin nodes, the configured rate limit is effectively multiplied by the number of database admin nodes. + * This multiplication applies to all [request rate limit policies](./request-rate-limit-policy.md). * `QueryHead`: * Rate limits for *queries* are enforced by the query head node that the query was routed to. * This option affects queries that are sent with either strong or weak [query consistency](../concepts/query-consistency.md). * Strongly consistent queries run on the database admin node, and the configured rate limit is effectively multiplied by the number of database admin nodes. * For weakly consistent queries, the configured rate limit is effectively multiplied by the number of query head nodes. + * The multiplication applies to all [request rate limit policies](./request-rate-limit-policy.md). * This option doesn't apply to *management commands*. > [!NOTE] @@ -49,11 +51,13 @@ Request rate limits can be enforced at one of the following levels: * `Database`: * Rate limits are enforced by the database admin node that manages the database the request was sent to. * If there are multiple database admin nodes, the configured rate limit is effectively multiplied by the number of database admin nodes. + * This multiplication applies to all [request rate limit policies](./request-rate-limit-policy.md). * `QueryHead`: * Rate limits for *queries* are enforced by the query head node that the query was routed to. * This option affects queries that are sent with either strong or weak [query consistency](../concepts/query-consistency.md). * Strongly consistent queries run on the database admin node, and the configured rate limit is effectively multiplied by the number of database admin nodes. * For weakly consistent queries, the configured rate limit is effectively multiplied by the number of query head nodes. + * The multiplication applies to all [request rate limit policies](./request-rate-limit-policy.md). * This option doesn't apply to *management commands*. > [!NOTE] @@ -96,6 +100,7 @@ Request rate limits can be enforced at one of the following levels: The effective rate limits for the `default` workload group are: :::moniker range="azure-data-explorer" + * The maximum number of concurrent *cluster-scoped management commands* is `200`. * The maximum number of concurrent *database-scoped management commands* is
`2` (database admin nodes) x `200` (max per admin node) = `400`. * The maximum number of concurrent *strongly consistent queries* is
`2` (database admin nodes) x `200` (max per admin node) = `400`. From 603aa36a104c2ecc59c4aca72386212891360d6d Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 11:22:28 +0300 Subject: [PATCH 2/7] Fix formatting in request rate limits policy Removed unnecessary line break before the list of effective rate limits. --- .../kusto/management/request-rate-limits-enforcement-policy.md | 1 - 1 file changed, 1 deletion(-) diff --git a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md index ec46cc43bc..5aa43d90ff 100644 --- a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md +++ b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md @@ -100,7 +100,6 @@ Request rate limits can be enforced at one of the following levels: The effective rate limits for the `default` workload group are: :::moniker range="azure-data-explorer" - * The maximum number of concurrent *cluster-scoped management commands* is `200`. * The maximum number of concurrent *database-scoped management commands* is
`2` (database admin nodes) x `200` (max per admin node) = `400`. * The maximum number of concurrent *strongly consistent queries* is
`2` (database admin nodes) x `200` (max per admin node) = `400`. From 24ab0d1e001ffddba7c49759c38226ed2843b747 Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 11:47:45 +0300 Subject: [PATCH 3/7] Update request rate limit policy documentation Clarified the default concurrent requests limit for workload groups. --- data-explorer/kusto/management/request-rate-limit-policy.md | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/data-explorer/kusto/management/request-rate-limit-policy.md b/data-explorer/kusto/management/request-rate-limit-policy.md index 0e030e0058..d46c3b271d 100644 --- a/data-explorer/kusto/management/request-rate-limit-policy.md +++ b/data-explorer/kusto/management/request-rate-limit-policy.md @@ -34,7 +34,8 @@ A request rate limit of kind `ConcurrentRequests` includes the following propert > [!NOTE] > -> * If a workload group doesn't have a specified limit on the maximum concurrent requests, it's subject to the default maximum value of `10000`. +> * The `default` workload group includes a pre-configured `ConcurrentRequests` limit of `Cores-Per-Node x 10`. See [The `default` workload group](#the-default-workload-group). +> * If a workload group doesn't have a specified limit on the maximum concurrent requests, it's subject to the default value of `10000`. When a request exceeds the limit on maximum number of concurrent requests: From 6aab8ad4c8cc9ec44e6b4b439b4e24b0204eb269 Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 12:00:57 +0300 Subject: [PATCH 4/7] Add warning for request rate limit policy Added a warning about setting request rate limits too high and its potential impact on cluster stability. --- data-explorer/kusto/management/request-rate-limit-policy.md | 3 +++ 1 file changed, 3 insertions(+) diff --git a/data-explorer/kusto/management/request-rate-limit-policy.md b/data-explorer/kusto/management/request-rate-limit-policy.md index d46c3b271d..009f77bb09 100644 --- a/data-explorer/kusto/management/request-rate-limit-policy.md +++ b/data-explorer/kusto/management/request-rate-limit-policy.md @@ -11,6 +11,9 @@ ms.date: 01/02/2025 The workload group's request rate limit policy lets you limit the number of concurrent requests classified into the workload group, per workload group or per principal. +> [!WARNING] +> Setting request rate limits too high may allow excessive resource consumption, potentially impacting cluster stability and performance for all users. If you're unsure about the appropriate values, consult with the support team. + Rate limits are enforced at the level defined by the workload group's [Request rate limits enforcement policy](request-rate-limits-enforcement-policy.md). ## The policy object From 021436b6ec8af0284245ae67d55ef41aca4473b4 Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 12:02:19 +0300 Subject: [PATCH 5/7] Modify reviewer and date in documentation Updated reviewer and date for request rate limit policy documentation. --- data-explorer/kusto/management/request-rate-limit-policy.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/data-explorer/kusto/management/request-rate-limit-policy.md b/data-explorer/kusto/management/request-rate-limit-policy.md index 009f77bb09..e8468e5f0d 100644 --- a/data-explorer/kusto/management/request-rate-limit-policy.md +++ b/data-explorer/kusto/management/request-rate-limit-policy.md @@ -1,9 +1,9 @@ --- title: Request rate limit policy description: Learn how to use the request rate limit policy to limit the number of concurrent requests classified into a workload group. -ms.reviewer: yonil +ms.reviewer: yabenyaa ms.topic: reference -ms.date: 01/02/2025 +ms.date: 07/01/2026 --- # Request rate limit policy From 321652d7f2e6698f49a5aa27c108741a255f7958 Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Wed, 1 Jul 2026 12:03:54 +0300 Subject: [PATCH 6/7] Update reviewer and date in policy documentation Updated reviewer and date in the request rate limits enforcement policy. --- .../management/request-rate-limits-enforcement-policy.md | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md index 5aa43d90ff..95a3f36edc 100644 --- a/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md +++ b/data-explorer/kusto/management/request-rate-limits-enforcement-policy.md @@ -1,9 +1,9 @@ --- title: Request rate limits enforcement policy description: Learn how to use the request rate limits enforcement policy to enforce request rate limits. -ms.reviewer: yonil +ms.reviewer: yabenyaa ms.topic: reference -ms.date: 01/02/2025 +ms.date: 07/01/2026 --- # Request rate limits enforcement policy From a51a5b61f1042c28f28ed76ab6f90ee9990df814 Mon Sep 17 00:00:00 2001 From: yahavx-ms <80623486+yahavx-ms@users.noreply.github.com> Date: Sat, 4 Jul 2026 20:12:37 +0300 Subject: [PATCH 7/7] Update request rate limit policy documentation Removed warning about setting request rate limits too high. --- data-explorer/kusto/management/request-rate-limit-policy.md | 3 --- 1 file changed, 3 deletions(-) diff --git a/data-explorer/kusto/management/request-rate-limit-policy.md b/data-explorer/kusto/management/request-rate-limit-policy.md index e8468e5f0d..f9bd0d2bd0 100644 --- a/data-explorer/kusto/management/request-rate-limit-policy.md +++ b/data-explorer/kusto/management/request-rate-limit-policy.md @@ -11,9 +11,6 @@ ms.date: 07/01/2026 The workload group's request rate limit policy lets you limit the number of concurrent requests classified into the workload group, per workload group or per principal. -> [!WARNING] -> Setting request rate limits too high may allow excessive resource consumption, potentially impacting cluster stability and performance for all users. If you're unsure about the appropriate values, consult with the support team. - Rate limits are enforced at the level defined by the workload group's [Request rate limits enforcement policy](request-rate-limits-enforcement-policy.md). ## The policy object