2022083 utf8 limitation

Author: WilliamDAssafMSFT

docs/relational-databases/polybase/polybase-versioned-feature-summary.md

@@ -1,25 +1,23 @@
 ---
-description: "PolyBase features and limitations"
 title: "PolyBase features and limitations"
-descriptions: This article summarizes PolyBase features available for SQL Server products and services. It lists T-SQL operators supported for pushdown and known limitations.
-ms.date: 12/03/2021
+description: "PolyBase features available for SQL Server products and services, including a list of T-SQL operators supported for pushdown and known limitations."
+author: WilliamDAssafMSFT
+ms.author: wiassaf
+ms.date: 08/30/2022
 ms.prod: sql
 ms.technology: polybase
 ms.topic: conceptual
-author: WilliamDAssafMSFT
-ms.author: wiassaf
-ms.reviewer: 
 monikerRange: ">=aps-pdw-2016||=azuresqldb-current||=azure-sqldw-latest||>=sql-server-2016||>=sql-server-linux-2017||=azuresqldb-mi-current"
 ---
 # PolyBase features and limitations
 
 [!INCLUDE[appliesto-ss2016-asdb-asdw-pdw-md](../../includes/tsql-appliesto-ss2016-all-md.md)]
 
-This article is a summary of PolyBase features available for [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] products and services.  
-  
+This article is a summary of PolyBase features available for [!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)] products and services.
+
 ## Feature summary for product releases
 
-This table lists the key features for PolyBase and the products in which they're available.  
+This table lists the key features for PolyBase and the products in which they're available.
 
 |**Feature** |**[!INCLUDE[ssNoVersion](../../includes/ssnoversion-md.md)]** (Beginning with 2016) |**Azure SQL Database** |**[!INCLUDE[ssazuresynapse_md](../../includes/ssazuresynapse_md.md)]** |**Parallel Data Warehouse** |
 |---------|---------|---------|---------|---------|
@@ -37,7 +35,6 @@ This table lists the key features for PolyBase and the products in which they're
 <sup>*</sup> Introduced in [!INCLUDE[sssql17-md](../../includes/sssql17-md.md)], see [Examples of bulk access to data in Azure Blob storage](../import-export/examples-of-bulk-access-to-data-in-azure-blob-storage.md).
 
 
-
 ## Known limitations
 
 PolyBase has the following limitations:
@@ -60,6 +57,10 @@ PolyBase has the following limitations:
 
 - Oracle synonyms are not supported for usage with PolyBase.
 
+- UTF-8 collations are not supported for Hadoop external data sources.
+
+- Starting in [!INCLUDE[sssql22-md](../../includes/sssql22-md.md)], Hadoop is no longer supported.
+
 <!--SQL Server 2016-->
 ::: moniker range="= sql-server-2016 "