Building and compiling Hadoop
The pre-build Hadoop binary available at www.apache.org, is a 32-bit version and is not suitable for the 64-bit hardware as it will not be able to utilize the entire addressable memory. Although, for lab purposes, we can use the 32-bit version, it will keep on giving warnings about the "not being built for the native library", which can be safely ignored.
In production, we will always be running Hadoop on hardware which is a 64-bit version and can support larger amounts of memory. To properly utilize memory higher than 4 GB on any node, we need the 64-bit complied version of Hadoop.
Getting ready
To step through the recipes in this chapter, or indeed the entire book, you will need at least one preinstalled Linux instance. ...
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