Which JSON structure correctly initiates a scroll search request in Elasticsearch to retrieve 100 documents with a 2-minute scroll timeout?

easy📝 Syntax Q3 of Q15

Elasticsearch - Advanced Patterns

A{ "scroll": "100", "size": "2m", "query": { "match_all": {} } }

B{ "scroll_id": "2m", "size": 100, "query": { "match_all": {} } }

C{ "size": 100, "scroll": "2m", "query": { "match_all": {} } }

D{ "query": { "match_all": {} }, "scroll_id": "2m", "size": 100 }

Step-by-Step Solution

Solution:

Step 1: Specify the scroll timeout
The scroll parameter defines how long Elasticsearch keeps the search context alive.
Step 2: Set the batch size
The size parameter controls how many documents are returned per batch.
Step 3: Provide the query
Using match_all retrieves all documents.
Final Answer:
{ "size": 100, "scroll": "2m", "query": { "match_all": {} } } -> Option C
Quick Check:
Scroll timeout and size must be correctly placed [OK]

Quick Trick: Use 'scroll' for timeout and 'size' for batch size [OK]

Common Mistakes:

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