Merge pull request #218411 from charithcaldera/patch-3

Create Synapse Known Issues.md

Author: Stacyrch140

articles/synapse-analytics/known-issues.md

@@ -0,0 +1,91 @@
+---
+title: Known issues
+titleSuffix: Azure Synapse Analytics
+description: Learn about the currently known issues with Azure Synapse Analytics, and their possible workarounds or resolutions.
+author: charithdilshan
+ms.author: ccaldera
+ms.date: 12/08/2022
+ms.service: synapse-analytics
+ms.subservice: overview
+ms.topic: conceptual
+ms.reviewer: wiassaf
+---
+
+# Azure Synapse Analytics known issues
+
+This page lists the known issues in [Azure Synapse Analytics](overview-what-is.md), as well as their resolution date or possible workaround. 
+Before submitting a Support request, please review this list to see if the issue that you are experiencing is already known and being addressed.
+
+To learn more about Azure Synapse Analytics, see the [Overview](index.yml), and [What's new in Azure Synapse Analytics?](whats-new.md). 
+
+## Active Known issues
+
+|Issue  |Date discovered  |Status  |Synapse Component|
+|---------|---------|---------|---------|
+|[Query failures from Serverless SQL to Cosmos DB analytical store](#query-failures-from-serverless-sql-pool-to-azure-cosmos-db-analytical-store)|June 2022|Has Workaround|Azure Synapse Serverless SQL pool|
+|[Query failures while reading Cosmos Data using OPENROWSET](#query-failures-while-reading-cosmos-data-using-openrowset)|September 2022|Has Workaround|Azure Synapse Serverless SQL Pool|
+|[Queries failing with Data Exfiltration Error](#queries-failing-with-data-exfiltration-error)|October 2022|Has Workaround|Azure Synapse Dedicated SQL Pool|
+|[Blob storage linked service with User Assigned Managed Identity (UAMI) is not getting listed](#blob-storage-linked-service-with-user-assigned-managed-identity-uami-is-not-getting-listed)|October 2022|Has Workaround|Azure Synapse Workspace|
+|[Failed to delete Synapse workspace & Unable to delete virtual network](#failed-to-delete-synapse-workspace--unable-to-delete-virtual-network)|November 2022|Has Workaround|Azure Synapse Workspace|
+
+## Azure Synapse Analytics Serverless SQL Pool known issues summary
+
+### Query failures from Serverless SQL pool to Azure Cosmos DB analytical store
+
+Queries from a serverless SQL pool to Azure Cosmos DB analytical store might fail with one of the following error messages:
+
+- `Resolving CosmosDB path has failed with error 'This request is not authorized to perform this operation'`
+- `Resolving CosmosDB path has failed with error 'Key not found'`
+
+The following conditions must be true to confirm this issue:
+
+1) The connection to Azure Cosmos DB analytical store uses a private endpoint. 
+2) Retrying the query succeeds.
+
+**Workaround**: The engineering team is aware of this behavior and following actions can be taken as quick mitigation:
+
+1) Retry the failed query. It will automatically refresh the expired token.
+2) Disable the private endpoint. Before applying this change, confirm with your security team that it meets your company security policies.
+
+### Query failures while reading Cosmos Data using OPENROWSET
+
+Queries from serverless SQL pool to Cosmos DB Analytical Store using OPENROWSET fails with the following error message:
+
+`Resolving CosmosDB path has failed with error 'bad allocation'.`
+
+**Workaround**: The engineering team is aware of this behavior and working on a fix. If you encounter this error engage Microsoft Support Team for assistance.
+
+## Azure Synapse Analytics Dedicated SQL pool known issues summary
+
+### Queries failing with Data Exfiltration Error
+
+Synapse workspaces created from an existing dedicated SQL Pool report query failures related to [Data Exfiltration Protection](security/workspace-data-exfiltration-protection.md) with generic error message while Data Exfiltration Protection is turned off in Synapse Analytics: 
+
+`Data exfiltration to '{****}' is blocked. Add destination to allowed list for data exfiltration and try again.`
+
+**Workaround**: If you encountered a similar error, engage Microsoft Support Team for assistance.
+
+## Azure Synapse workspace known issues summary
+
+The following are known issues with the Synapse workspace.
+
+### Blob storage linked service with User Assigned Managed Identity (UAMI) is not getting listed
+
+The linked service may not be visible under the **Data Hub** -> **Linked** -> **Azure Blob Storage** after configuring the blob storage linked service to use "User Assigned Managed Identity" authentication in Azure Synapse Analytics.
+
+**Workaround**: The engineering team is currently aware of this behavior and working on a fix. As an alternative, use "System Assigned Managed Identity" authentication method instead of "User Assigned Managed Identity".
+
+### Failed to delete Synapse workspace & Unable to delete virtual network
+
+Deleting a Synapse workspace fails with the error message:
+
+`Failed to delete Synapse workspace '[Workspace Name]'. Unable to delete virtual network. The correlationId is ********-****-****-****-************;`
+
+**Workaround**: The problem can be mitigated by retrying the delete operation. The engineering team is aware of this behavior and working on a fix.
+
+## Next steps
+
+- [Synapse Studio troubleshooting](troubleshoot/troubleshoot-synapse-studio.md)
+- [Troubleshoot serverless SQL pool in Azure Synapse Analytics](sql/resources-self-help-sql-on-demand.md)
+- [Best practices for serverless SQL pool in Azure Synapse Analytics](sql/best-practices-serverless-sql-pool.md)
+- [Troubleshoot a slow query on a dedicated SQL Pool](/troubleshoot/azure/synapse-analytics/dedicated-sql/troubleshoot-dsql-perf-slow-query)

articles/synapse-analytics/sql/create-use-views.md

@@ -76,7 +76,7 @@ from openrowset(
            ) as rows
 ```
 
-Review the known issues on [Synapse serverless SQL pool self-help page](resources-self-help-sql-on-demand.md#delta-lake).
+For more information, review [Synapse serverless SQL pool self-help page](resources-self-help-sql-on-demand.md#delta-lake) and [Azure Synapse Analytics known issues](../known-issues.md).
 
 ## Partitioned views
 
@@ -117,7 +117,7 @@ The folder name in the `OPENROWSET` function (`yellow` in this example) that is
 > [!div class="mx-imgBorder"]
 >![Yellow Taxi Delta Lake folder](./media/shared/yellow-taxi-delta-lake.png)
 
-Review the known issues on [Synapse serverless SQL pool self-help page](resources-self-help-sql-on-demand.md#delta-lake).
+For more information, review [Synapse serverless SQL pool self-help page](resources-self-help-sql-on-demand.md#delta-lake) and [Azure Synapse Analytics known issues](../known-issues.md).
 
 ## JSON views
 
@@ -189,3 +189,9 @@ ORDER BY
 ## Next steps
 
 For information on how to query different file types, refer to the [Query single CSV file](query-single-csv-file.md), [Query Parquet files](query-parquet-files.md), and [Query JSON files](query-json-files.md) articles.
+
+- [What's new in Azure Synapse Analytics?](../whats-new.md). 
+- [Best practices for serverless SQL pool in Azure Synapse Analytics](best-practices-serverless-sql-pool.md)
+- [Troubleshoot serverless SQL pool in Azure Synapse Analytics](resources-self-help-sql-on-demand.md)
+- [Troubleshoot a slow query on a dedicated SQL Pool](/troubleshoot/azure/synapse-analytics/dedicated-sql/troubleshoot-dsql-perf-slow-query)
+- [Synapse Studio troubleshooting](../troubleshoot/troubleshoot-synapse-studio.md)