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Defining Custom Analyzers, Multi-Fields, and Mappings in Elasticsearch 7.13
Elasticsearch has a plethora of built-in analyzers, as well as the ability to automatically detect the data type for each of your fields. If you want to fine-tune how your fields are analyzed and mapped, then Elasticsearch has you covered. In this hands-on lab, you will create and use custom analyzers and multi-fields, and define both explicit and dynamic mappings in Elasticsearch.
Lab Info
Table of Contents
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Challenge
Create the strings_as_keywords Component Template
From the Kibana console, create the
strings_as_keywordscomponent template with the following requirements:- Dynamically maps
stringfields as thekeyworddatatype. - Only indexes the first
256characters.
- Dynamically maps
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Challenge
Create the social_media_analyzer Component Template
From the Kibana console, create the
social_media_analyzercomponent template with the following requirements:- Creates a custom analyzer called
social_mediathat uses theclassictokenizer. - Uses the
lowercasefilter and a customenglish_stopfilter. Theenglish_stopfilter should remove English stop words. - Uses a custom
emoticonsmapping character filter with the following mappings::)ashappy:Daslaughing:(assad:')ascrying:Oassurprised;)aswinking
- Creates a custom analyzer called
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Challenge
Create the twitter_template Index Template
From the Kibana console, create the
twitter_templateindex template with the following requirements:- Matches all indices that start with "twitter-".
- Composed of the
strings_as_keywordsandsocial_media_analyzercomponent templates. - Maps the
tweetfield as an analyzed string field with thesocial_mediaanalyzer. - Maps a
tweet.keywordmulti-field as typekeywordand only indexes the first280characters. - Sets the number of shards to
1and replicas to0.
About the author
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