Inherited from UnaryExecNode
Inherited from SparkPlan
Inherited from Serializable
Inherited from Serializable
Inherited from internal.Logging
Inherited from QueryPlan[SparkPlan]
Inherited from TreeNode[SparkPlan]
Inherited from Product
Inherited from Equals
Inherited from AnyRef
Inherited from Any
Perform stratified sampling given a Query-Column-Set (QCS). This variant can also use a fixed fraction to be sampled instead of fixed number of total samples since it is also designed to be used with streaming data.