Azure Data Factory copy problem

Question

I created a pipeline which copied csv files from one container to another and then deleted source files. At first it ran ok, but now when I try to rerun it or run similar activities, I get this error: An error occurred while sending the request.. Account: 'accountname'. FileSystem: 'raw'..,Source=Microsoft.DataTransfer.ClientLibrary,''Type=System.Net.Http.HttpRequestException,Message=An error occurred while sending the request.,Source=mscorlib,''Type=System.Net.WebException,Message=The underlying connection was closed:

Answer 1

Hi @Lana Kh ,

Welcome to Microsoft Q&A platform and thanks for posting your query.

As I understand your issue, while trying to copy data from one .csv file lying in a folder to another in ADLS , you are getting error 'The underlying connection was closed' . Please let me know if there is any gap in my understanding.

Kindly ensure the linked service connection to the source and sink are successful.

If testing the linked service connection fails, kindly make sure the source folder and file exists and proper file path for source and sink has been mentioned in the dataset.

If the above suggestion doesn't help, Kindly share more details like Source and sink settings screenshot for us to investigate further.

Hope this will help. Please let us know if any further queries.

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