Elasticsearch - Document Operations
Why does the
_update API in Elasticsearch not replace the entire document by default when updating fields?Why does the _update API in Elasticsearch not replace the entire document by default when updating fields?
hard🧠 Conceptual Q10 of 15
Step-by-Step Solution
Solution:
Step 1: Understand update API behavior
The update API modifies specified fields without replacing the whole document.Step 2: Reason why partial update is default
This prevents accidental loss of fields not included in the update, preserving data integrity.Final Answer:
To avoid accidental deletion of fields not included in the update -> Option AQuick Check:
Partial update prevents data loss = To avoid accidental deletion of fields not included in the update [OK]
Quick Trick: Partial updates protect existing fields from deletion [OK]
Common Mistakes:
MISTAKES- Thinking update replaces whole document
- Believing Elasticsearch lacks full replacement
- Assuming update only uses scripts
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