Azure Data Lake Analytics U-SQL runtime upgrade

Azure Data Lake Analytics U-SQL runtime is upgrading from .NET Framework v4.5.2 to .NET Framework v4.7.2\. This change introduces a small risk of breaking changes if your U-SQL code uses custom assemblies that use .NET libraries. Learn how to [check for backwards-compatibility issues](https://docs.microsoft.com/en-us/azure/data-lake-analytics/dotnet-upgrade-troubleshoot#how-to-check-for-backwards-compatibility-issues). * Data Lake Analytics * Services * [ Data Lake Analytics](https://azure.microsoft.com/en-gb/products/data-lake-analytics/)