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azureazure-blob-storageazure-eventhub

Does Event Hub read its own Capture files?

I've read multiple articles describing how the Event Hub "Capture Feature" can be used to retain messages beyond 7 days using Blob Storage or Data Lake; but none say if those messages can be replayed to a Consumer if it were to rewind the Offset backwards beyond 7 days.

Should I assume the Capture feature claim is a little "tongue in cheek" and in actuality it's an export feature and does not integrate with or extend Event Hub's native transient storage?

Thanks

-John

Solution

  • Yes, your assumption is correct. The capture feature just stores the data into blob storage or ADLS, but it cannot be used to replay by just rewinding the Offset backwards beyond 7 days.

    If you want to replay, you need to resend the data from storage to eventhub again. Here is an example of reading the captured data, you can take use of it and re-send it by yourself for replay purpose.

    Hope it can help you.