In the previous chapters we have examined many parts of Hadoop 2 and the ecosystem around it. However, we have necessarily been limited by page count; some areas we didn't get into as much depth as was possible, other areas we referred to only in passing or did not mention at all.
The Hadoop ecosystem, with distributions, Apache and non-Apache projects, is an incredibly vibrant and healthy place to be right now. In this chapter, we hope to complement the previously discussed more detailed material with a travel guide, if you will, for other interesting destinations. In this chapter, we will discuss the following topics: