pyspark.streaming.DStream.leftOuterJoin¶
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DStream.leftOuterJoin(other: pyspark.streaming.dstream.DStream[Tuple[K, U]], numPartitions: Optional[int] = None) → pyspark.streaming.dstream.DStream[Tuple[K, Tuple[V, Optional[U]]]][source]¶ Return a new DStream by applying ‘left outer join’ between RDDs of this DStream and other DStream.
Hash partitioning is used to generate the RDDs with numPartitions partitions.