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When a Lens visualization shows incorrect aggregation results, what is a common debugging step?

medium📝 Debug Q7 of Q15
Elasticsearch - Kibana and Visualization

When a Lens visualization shows incorrect aggregation results, what is a common debugging step?

ARestart the Elasticsearch server
BDisable drag-and-drop and write manual queries
CDelete and recreate the index pattern
DVerify the aggregation type matches the field data type
Step-by-Step Solution
Solution:

  1. Step 1: Identify cause of wrong aggregation

    Using an aggregation type incompatible with the field data type causes wrong results.

  2. Step 2: Choose correct debugging action

    Verifying and correcting aggregation type fixes the issue; other options are unrelated or extreme.

  3. Final Answer:

    B -> Option D

  4. Quick Check:

    Aggregation type must fit field type [OK]
Quick Trick: Match aggregation type to field data type to fix errors [OK]
Common Mistakes:
MISTAKES
  • Restarting server unnecessarily
  • Deleting index pattern without cause
  • Avoiding drag-and-drop instead of fixing aggregation

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