[Solved] What happens when you index a new field in Elasticsearch with dynamic mapping enabled? - Ans: Elasticsearch automatically adds the new field with a guessed data type. | Elasticsearch

Elasticsearch - Mappings and Data Types

What happens when you index a new field in Elasticsearch with dynamic mapping enabled?

AElasticsearch rejects the document due to unknown fields.

BElasticsearch automatically adds the new field with a guessed data type.

CYou must manually add the field to the mapping before indexing.

DThe new field is ignored and not stored.

Step-by-Step Solution

Solution:

Step 1: Understand dynamic mapping behavior
Dynamic mapping allows Elasticsearch to detect new fields automatically when documents are indexed.
Step 2: Effect of indexing a new field with dynamic mapping
When a new field appears, Elasticsearch guesses its data type and adds it to the mapping automatically.
Final Answer:
Elasticsearch automatically adds the new field with a guessed data type. -> Option B
Quick Check:
Dynamic mapping = automatic field addition [OK]

Quick Trick: Dynamic mapping auto-adds new fields with guessed types [OK]

Common Mistakes:

MISTAKES

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What happens when you index a new field in Elasticsearch with dynamic mapping enabled?