Elasticsearch - Document Operations
Why does Elasticsearch return the entire document source when retrieving by ID, even if you only want a few fields?
Why does Elasticsearch return the entire document source when retrieving by ID, even if you only want a few fields?
hard🧠 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand default behavior of GET by ID
By default, GET /index/_doc/id returns the full _source document.Step 2: Clarify why full source is returned
Field filtering requires explicit _source parameter; otherwise, full source is sent.Final Answer:
Because the GET by ID API returns the full _source by default -> Option BQuick Check:
GET by ID returns full _source unless filtered [OK]
Quick Trick: GET by ID returns full document unless _source filters used [OK]
Common Mistakes:
MISTAKES- Thinking field filtering is unsupported
- Confusing ID indexing with source retrieval
- Assuming _doc returns only metadata
Master "Document Operations" in Elasticsearch
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Elasticsearch Quizzes