You defined a mapping for a field status as keyword, but your documents have mixed case values like "Open" and "open". What issue might arise?

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Elasticsearch - Mappings and Data Types

You defined a mapping for a field status as keyword, but your documents have mixed case values like "Open" and "open". What issue might arise?

AElasticsearch will convert all values to lowercase automatically

BElasticsearch will treat "Open" and "open" as different values in aggregations

CElasticsearch will reject documents with uppercase letters

DElasticsearch will merge all values ignoring case

Step-by-Step Solution

Solution:

Step 1: Understand keyword field behavior
Keyword fields are case-sensitive and do not analyze text.
Step 2: Analyze effect of mixed case values
Values like "Open" and "open" are treated as distinct, affecting aggregations and filters.
Final Answer:
Elasticsearch will treat "Open" and "open" as different values in aggregations -> Option B
Quick Check:
Keyword fields are case-sensitive = B [OK]

Quick Trick: Keyword fields treat cases distinctly [OK]

Common Mistakes:

MISTAKES

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