如何在Apache Spark中实现递归算法？

from pyspark import SparkContext

# 创建SparkContext
sc = SparkContext("local", "Recursive Algorithm")

# 定义递归算法的逻辑函数
def recursive_algorithm(data):
    # TODO: 实现递归算法的逻辑
    pass

# 创建初始RDD
initial_rdd = sc.parallelize([1, 2, 3, 4, 5])

# 迭代次数
iterations = 10

# 迭代计算
current_rdd = initial_rdd
for i in range(iterations):
    # 使用mapPartitions对RDD进行处理
    new_rdd = current_rdd.mapPartitions(recursive_algorithm)
    
    # 缓存新的RDD
    new_rdd.persist()
    
    # 更新当前RDD为新的RDD
    current_rdd = new_rdd

# 获取最终结果RDD
result_rdd = current_rdd.collect()

# 打印结果
print(result_rdd)

# 关闭SparkContext
sc.stop()