Elasticsearch - Mappings and Data Types
You want to index documents with a date field that accepts either ISO 8601 strings or epoch seconds. How should you define the date field format in the mapping?
You want to index documents with a date field that accepts either ISO 8601 strings or epoch seconds. How should you define the date field format in the mapping?
hard🚀 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Identify required formats
ISO 8601 strings correspond to "strict_date_optional_time" format, epoch seconds correspond to "epoch_second".Step 2: Define formats as an array
Use an array of formats to accept both types.Final Answer:
["strict_date_optional_time", "epoch_second"] -> Option CQuick Check:
Multiple formats array allows flexible date inputs [OK]
Quick Trick: Use array of formats to accept multiple date input types [OK]
Common Mistakes:
MISTAKES- Using only epoch_millis
- Using wrong format strings
- Not using array for multiple formats
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