pyspark.streaming.DStream.groupByKeyAndWindow¶
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DStream.groupByKeyAndWindow(windowDuration, slideDuration, numPartitions=None)[source]¶ Return a new DStream by applying groupByKey over a sliding window. Similar to DStream.groupByKey(), but applies it over a sliding window.
- Parameters
- windowDurationint
width of the window; must be a multiple of this DStream’s batching interval
- slideDurationint
sliding interval of the window (i.e., the interval after which the new DStream will generate RDDs); must be a multiple of this DStream’s batching interval
- numPartitionsint, optional
Number of partitions of each RDD in the new DStream.