o
org.apache.spark.sql.execution.streaming
FlatMapGroupsWithStateExec
Companion class FlatMapGroupsWithStateExec
object FlatMapGroupsWithStateExec extends Serializable
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- def generateSparkPlanForBatchQueries(userFunc: (Any, Iterator[Any], LogicalGroupState[Any]) => Iterator[Any], keyDeserializer: Expression, valueDeserializer: Expression, initialStateDeserializer: Expression, groupingAttributes: Seq[Attribute], initialStateGroupAttrs: Seq[Attribute], dataAttributes: Seq[Attribute], initialStateDataAttrs: Seq[Attribute], outputObjAttr: Attribute, timeoutConf: GroupStateTimeout, hasInitialState: Boolean, initialState: SparkPlan, child: SparkPlan): SparkPlan
Plan logical flatmapGroupsWIthState for batch queries If the initial state is provided, we create an instance of the CoGroupExec, if the initial state is not provided we create an instance of the MapGroupsExec
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