A Hadoop application area
Two Hadoop learning significance
Three goole big data technology
MapReduce、BigTable、GFS
Revolutionary change 1: cost reduction, PCs can be used, mainframes and high-end storage are not needed
Revolutionary Change 2: Software Fault Tolerance Hardware failures are regarded as the norm, and reliability is guaranteed by software
Revolutionary Change 3: Simplify parallel distributed computing without controlling node synchronization and data exchange
However, Google has only published relevant technical papers, no open source code
An open source implementation that imitates Google's big data technology is here, it's called Hadoop
Four study suggestions
1. Combined with books, knowledge points are more systematic and comprehensive
"Detailed explanation of Hadoop technology"
The Definitive Guide to Hadoop
2. Practical experience is very important, practice while learning