Cognitive Search - Custom blob metadata keys

Question

How do I take a custom metadata key added to a blob and include it in an index? I know that when using contentAndMetadata or metadataOnly on blobs, certain metadata properties such as metadata_storage_path are available to the indexer.

For example, given a blob test.html, I add a custom metadata key createdBy with value frodo baggins. This doesn't seem available on /document after the document cracking skill executes, however, so how can I get this into the index?

Answer 1

It seems it is available on /document, it just doesn't show up in the debug session. You need to specifically know to reference the name of the key. I.e. in the index you can just create a field matching the key name, or use fieldMapping to change the key name in the index