The ALLOW FILTERING option allows to explicitly allow queries that require filtering. Please note that a query using ALLOW FILTERING may thus have unpredictable performance (for the definition above), i.e. even a query that selects a handful of records may exhibit performance that depends on the total amount of data stored in the cluster.

[ObsoleteAttribute("Linq attributes are deprecated, use mapping attributes defined in Cassandra.Mapping.Attributes instead.")]
[AttributeUsageAttribute(AttributeTargets.Class|AttributeTargets.Struct, Inherited = false, 
	AllowMultiple = false)]
public class AllowFilteringAttribute : Attribute