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2025-04-04 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Internet Technology >
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A brief introduction to the Core concept of Spark
A Spark application is initiated by a driver program to initiate various concurrent operations on the cluster. A driver program generally contains multiple actuator nodes, and the driver program accesses the saprk through a SaprkContext object. RDD (flexible distributed dataset)-distributed collection of elements. RDD supports two operations: conversion operation and action operation, such as map and reduce functions.
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"Every 5-10 years, there's a rare product, a really special, very unusual product that's the most un
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