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| rdd1 = sc.parallelize(range(int(1e8)), 200).map(lambda x: [x]) | |
| df1 = rdd1.toDF(schema=["index"]) \ | |
| .withColumn("key", F.when(F.col("index") < 2, F.concat_ws("-", F.lit("key"), F.col("index"))).otherwise("key-2")) \ | |
| .cache() | |
| df1.groupBy("key").count().show() |
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