Hadoop is an outstanding parallel computing system whose default parallel computing mode is MapReduce. However, such parallel computing is not specially designed for parallel data computing. Plus, it is not an agile parallel computing program language, the coding efficiency for data computing is relatively low, and this parallel computing is even more difficult to compose the universal algorithm...
In the process of Java development, programmers will come across data computation. But Java alone is not convenient to handle such computation. SQL has limited impact on improving the computational efficiency for Java. In this case, a new way is needed.
In the process of Java development, programmers may come across complex set operations and Java alone is not powerful enough to easily handle such problem. Dynamic calculation script is good solution. In this post, I'll introduce how to conduct such computation in a simple way.