Copy Activity Error that Resolved by Itself Upon Retries

[v-cyu]

We need help understanding what would cause the below error to arise/what does the error mean? 
For the Copy Activity in question, we have set the number of retries to 5. For the first 4 runs, the copy activity failed with the below error. Yet, without any manual intervention, the copy activity was able to run on the 5th retries. Any reason why that is? Or is it simply an intermitten bug/issue type of thing?

ErrorCode=UserErrorFileNotFound,'Type=Microsoft.DataTransfer.Common.Shared.HybridDeliveryException,Message=Lakehouse operation failed for: Operation returned an invalid status code 'NotFound'. Workspace: 'workspaceId123'. Path: 'path123/Tables/TableName/filename9876.parquet'. ErrorCode: 'PathNotFound'. Message: 'Not Found'. RequestId: 'filename9876'. TimeStamp: 'Fri, 07 Jun 2024 09:35:46 GMT'.,Source=Microsoft.DataTransfer.ClientLibrary,''Type=Microsoft.Azure.Storage.Data.Models.ErrorSchemaException,Message=Operation returned an invalid status code 'NotFound',Source=Microsoft.DataTransfer.ClientLibrary,'

[v-cboorla-msft]

Hi @v-cyu 

Thanks for using Microsoft Fabric Community.

Apologies for the inconvenience.

There might be a chance of an intermittent issue could you please follow the below steps that might help you.

Temporary Glitch: Clearing cookies and caches can sometimes resolve temporary glitches within the application that might be causing the issue.

Corrupted Data: In rare cases, corrupted data stored in the browser's cache related to Microsoft Fabric might be causing the issue. Clearing the cache removes this potentially problematic data.

Hard Refresh: A hard refresh bypasses the cached version of the webpage and forces the browser to download the latest version from the server. Press Ctrl+Shift+R (Windows) or Cmd+Shift+R (Mac).

Try Microsoft Edge: If you are currently using Chrome or Firefox, try switching to Microsoft Edge to see if the issue persists. Edge is the native browser for Microsoft products and might have better compatibility with Microsoft Fabric.

If the issue still persists, please do let us know. Glad to help.

I hope this information helps.

Thank you.

[v-cboorla-msft]

Hi @v-cyu 

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet.
In case if you have any resolution please do share that same with the community as it can be helpful to others.
Otherwise, will respond back with the more details and we will try to help.

Thank you.

[v-cboorla-msft]

Hi @v-cyu 

We haven’t heard from you on the last response and was just checking back to see if you have a resolution yet. In case if you have any resolution please do share that same with the community as it can be helpful to others .
If you have any question relating to the current thread, please do let us know and we will try out best to help you.
In case if you have any other question on a different issue, we request you to open a new thread.

Thank you.