- Lab
- Cloud
Reindex Elasticsearch Documents
Whether you need to change the mapping of an existing index or take a subset of data from one index and copy it to another, the `_reindex` API in Elasticsearch has you covered. With the `_reindex` API, you can take all or just a subset of data from one index and copy it to another. In this hands-on lab, you are given the opportunity to exercise the following: * Reindex a subset of data from one index to a new index * Create an ingest node pipeline * Transform data during the reindexing process
Path Info
Table of Contents
-
Challenge
Create the romeo_and_juliet index.
Use the Kibana console tool to execute the following:
PUT romeo_and_juliet { "mappings": { "properties": { "line_id": { "type": "integer" }, "line_number": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } } }, "play_name": { "type": "keyword" }, "speaker": { "type": "keyword" }, "speech_number": { "type": "integer" }, "text_entry": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } } }, "type": { "type": "text", "fields": { "keyword": { "type": "keyword", "ignore_above": 256 } } } } }, "settings": { "number_of_shards": 4, "number_of_replicas": 3 } } -
Challenge
Create the shakespeare-tokenizer ingest node pipeline.
Use the Kibana console tool to execute the following:
PUT _ingest/pipeline/shakespeare-tokenizer { "description": "Tokenizes the text_entry field into an array. Adds a word_count field. Removes the play_name field.", "processors": [ { "split": { "field": "text_entry", "separator": "\\s+", "target_field": "word_array" } }, { "script": { "lang": "painless", "source": "ctx.word_count = ctx.word_array.length" } }, { "remove": { "field": "play_name" } } ] } -
Challenge
Reindex the play "Romeo and Juliet".
Use the Kibana console tool to execute the following:
POST _reindex { "source": { "index": "shakespeare", "query": { "match": { "play_name": "Romeo and Juliet" } } }, "dest": { "index": "romeo_and_juliet", "pipeline": "shakespeare-tokenizer" } }
What's a lab?
Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.
Provided environment for hands-on practice
We will provide the credentials and environment necessary for you to practice right within your browser.
Guided walkthrough
Follow along with the author’s guided walkthrough and build something new in your provided environment!
Did you know?
On average, you retain 75% more of your learning if you get time for practice.