pyspark.RDD.sumApprox¶
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RDD.sumApprox(timeout: int, confidence: float = 0.95) → pyspark.rdd.BoundedFloat¶ Approximate operation to return the sum within a timeout or meet the confidence.
Examples
>>> rdd = sc.parallelize(range(1000), 10) >>> r = sum(range(1000)) >>> abs(rdd.sumApprox(1000) - r) / r < 0.05 True