Scroll API for deep pagination in Elasticsearch - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start a scroll search with a 1 minute scroll context.

Elasticsearch

{
  "scroll": "[1]",
  "size": 100,
  "query": {
    "match_all": {}
  }
}

Drag options to blanks, or click blank then click option'

A5m

B1s

C10m

D1m

Attempts:

3 left

💡 Hint

Common Mistakes

Using seconds like '1s' which is too short for scroll context.

Omitting the scroll parameter entirely.

The scroll parameter defines how long Elasticsearch keeps the search context alive. "1m" means 1 minute, which is a common choice.

2fill in blank

medium

Complete the code to retrieve the next batch of results using the scroll ID.

Elasticsearch

{
  "scroll": "1m",
  "scroll_id": "[1]"
}

Drag options to blanks, or click blank then click option'

Aabc123

Bscroll_id

Cnext_batch

DscrollId

Attempts:

3 left

💡 Hint

Common Mistakes

Using the literal string 'scroll_id' instead of the actual scroll ID value.

Confusing scroll_id with other parameter names.

The scroll_id is a unique string returned by Elasticsearch after the initial scroll search. You use it to get the next batch of results.

3fill in blank

hard

Fix the error in the scroll request by completing the missing parameter.

Elasticsearch

{
  "scroll": "1m",
  "[1]": "DXF1ZXJ5QW5kRmV0Y2gBAAAAAAA"
}

Drag options to blanks, or click blank then click option'

Ascroll_id

BscrollId

Cscrollid

Dscroll-id

Attempts:

3 left

💡 Hint

Common Mistakes

Using camelCase like 'scrollId' which causes errors.

Using hyphen or lowercase without underscore.

The correct parameter name is 'scroll_id' with an underscore, exactly as Elasticsearch expects.

4fill in blank

hard

Fill both blanks to create a scroll search that fetches 50 results and keeps the context alive for 2 minutes.

Elasticsearch

{
  "scroll": "[1]",
  "size": [2],
  "query": {
    "match_all": {}
  }
}

Drag options to blanks, or click blank then click option'

A2m

B50

C100

D1m

Attempts:

3 left

💡 Hint

Common Mistakes

Using size larger than intended like 100.

Setting scroll time too short like '1m'.

Setting scroll to '2m' keeps the context alive for 2 minutes. Size 50 fetches 50 results per batch.

5fill in blank

hard

Fill all three blanks to create a scroll request that uses the scroll ID, sets scroll time to 3 minutes, and fetches the next batch.

Elasticsearch

{
  "scroll": "[1]",
  "[2]": "DXF1ZXJ5QW5kRmV0Y2gBAAAAAAA",
  "size": [3]
}

Drag options to blanks, or click blank then click option'

Ascroll_id

B1m

C100

D3m

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong parameter name like 'scrollId'.

Setting scroll time too short or size too small.

Scroll time is set to '3m' for 3 minutes. The parameter name is 'scroll_id'. Size 100 fetches 100 results per batch.