Full crawl not picking up the properties from content type even though they are populated and being used

Question

After running multiple full crawl the search service app still not picking up the metadata or properties from site column and content types. The columns are well populated with 500,000+ documents.

The old search broke so created a new search service application and re-crawl multiple times. Please suggest what else I should be checking or doing? Do I need to run some powershell command to add these properties (I shouldnt have to as SP should pick them up since they are pretty well populated).

Under stress and fire. Please suggest.

Added: There are variety of column types (managed-metadata, sp built-in column type). No custom fields.

Answer 1

Have you added the properties you want to retrieve in the Managed Properties section of the Service Application? Note that this is different from the 'Managed Metadata' Service Application (perhaps poor naming on MS' part). You'll also want to ensure that the Managed Properties you have are included in the index.