1, the core is the most basic function of spark sparkCore
2, sparkcore mainly includes: sparkContext, calculation engine, storage systems, deployment model
3, RDD: distributed data sets, is spark the most basic data abstraction. It represents an immutable, can partition the set of internal elements of parallel computing.
4, sparkCore basic code Function:
1, wordCount (word count)
2, boradCast (broadcast variable)
3, accumulator (counter)
4, partion (partition)
Click on the specific code: sparkCore