The Basics About the Rockwell Hardness Test. Simply put, the Rockwell hardness test is a method of measuring the hardness of materials. The Rockwell hardness scale is typically administered to characterize the hardness of metals, such as thin steel, cemented carbides, lead, aluminum, zinc, copper alloys, titanium and iron.
Apache Camel is an open source Java framework that focuses on making integration easier and more accessible to developers. Figure 1 shows how these three items actually map to Camel concepts. To give you a good understanding of how Camel is organized, we will discuss Components, Endpoints, Processors, and DSLs.
Impala is the open source, native analytic database for Apache Hadoop. It is shipped by vendors such as Cloudera, MapR, Oracle, and Amazon. The examples provided in this tutorial have been developing using Cloudera Impala