Bundle activation creates recipe id cache with duplicates

On bundle activation every triple in the recipe index is used to populate the in-memory recipe id cache (recipes). This cache initialization does not take the actual index structure into account.The index contains not only recipe id's but also recipe descriptions. As a result the cache will contain duplicate entries after initialization.

Description related triples in the index should not be used for cache construction. Or even better only Symbols.Recipe (Object) triples should be used.