How should I connect Hadoop in C

0 votes

I want to connect Hadoop in c# using HDInsight. I have created a cluster in AZURE and it was created successfully. and also I enabled remote desktop connection in it. When I entered the credentials in C# and execute the job then I get the connection error. I am confused about providing the parameters. 

In this code, the last line gives the exception -  And the exception message is - One or more errors occured.

var hadoop = Hadoop.Connect(new Uri("https://clustername.azurehdinsight.net"), "admin", "");
//I have set remote desktop password

var config = new HadoopJobConfiguration();



                config.InputPath = "input/CodeFiles";
                config.OutputFolder = "output/CodeFiles";
                var result = hadoop.MapReduceJob.ExecuteJob<NamespaceCounterJob>();
Aug 7, 2018 in Big Data Hadoop by Frankie
• 9,830 points
1,577 views

1 answer to this question.

0 votes

The Uri should be your Cluster Name, not Username, like:

var hadoop = Hadoop.Connect(new Uri("https://clustername.azurehdinsight.net"), "username", "password");
var config = new HadoopJobConfiguration();

            config.InputPath = "input/CodeFiles";
            config.OutputFolder = "output/CodeFiles";
            var result = hadoop.MapReduceJob.ExecuteJob<NamespaceCounterJob>();

The cluster name is shown at the top of the detail page in the Azure portal for your cluster. Also, you don't need to enable RDP to use this method, it's actually the username set for "Hadoop Services" in the configuration tab of the cluster. Launching a job in this manner makes use of the WebHCat/Templeton endpoint, so RDP is not required.

You can learn more from the Hadoop Certification.

I hope this helps you :)

answered Aug 7, 2018 by Neha
• 6,300 points

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