MapR-ES C#/.NET Applications

As of MapR 6.0.1/MEP5.0, you can create C#/.NET applications for MapR-ES using the MapR-ES C#/.NET client. The MapR-ES C#/.NET client is a binding for librdkafka and the MapR-ES C Client is a distribution of librdkafka that works with MapR-ES.


  • MapR Client on Windows 7 (or higher) x64 operating systems
  • MapR cluster version 6.0.1 or greater
  • Java 8 SDK and set Java HOME
  • MapR-ES C Client (mapr-librdkafka 0.11.3)
  • MapR-ES C#/.NET Client (mapr-streams-dotnet)
  • .NET SDK 4.5.x or 4.6.x or .NET Core SDK 1.1
  • nuget.exe

See Installing MapR-ES C#/.NET Client for installation information.

General Information

When developing and running MapR-ES C#/.NET applications, note the following points:
  • You can create producers and high-level consumers. Low-level consumers are not supported.
  • Consuming or producing topics in a Kafka cluster is not supported.
  • MapR-ES offset values start at 1, not 0.
  • MapR security is supported including ACLs and ACEs for authorization. The unique Kafka security features that are part of Apache Kafka are not supported. See Security for more information about MapR security features.
  • User impersonation is not supported.