Question: What is the conceptual problem with the following snippet of Apache Spark code meant to work on very large data. Note that the collect() function

What is the conceptual problem with the following snippet of Apache Spark code meant to work on very large data. Note that the collect() function returns a Java collection, and Java collections (from Java 8 onwards) support map and reduce functions.

JavaRDD s.length()) .reduce(0,(a,b) -> a+b);

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