Voila! We have completed this chapter. We should now understand what Elasticsearch plugin management is and how it enhances the core functionality of Elasticsearch.

In this chapter, we introduced Analysis Plugins and deep dived into their details. We practiced the ICU Analysis plugin, the Smart Chinese Analysis plugin, and the IK Analysis plugin to perform analysis for Chinese texts. It seems that the IK Analysis plugin is better than the other two plugins due to its ability to segment word boundaries. We also added a new custom dictionary to improve word segmentation in order to make it work better.

In the next chapter, we will study the machine learning support that is available in Elasticsearch and use a Python scikit-learn package to work with Elasticsearch. We will follow two examples; the first one will create a single metric job to track the custom indicator to...