Publishing Multi-Language Sitecore Items Leads to a Large Amount of Files Being Indexed

When publishing an item that has many languages on it, you see that it’s in fact indexed up to 9 times. For example, if you have an item in Danish, English and German versions, the publish will look like this:

This is a known behavior of the AddLanguagesToQueue Sitecore processor. For details on the root cause and the solution, see Publishing in Multilingual Sitecore Sites - Reducing the Overhead.