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relevantfields - Amazon CloudWatch Logs

relevantfields

Use relevantfields to automatically identify which fields in your log data are most relevant to a given condition. The command compares the baseline logs against the subset matching your condition, and returns fields ranked by their relevance score.

Syntax

relevantfields [field1, field2, ...] where condition

The field list is optional. If omitted, all fields are analyzed.

The command returns the following output fields:

  • @fieldName — Name of the field

  • @relevanceScore — A score indicating relevancy on a scale of 0 to 1

  • @topRelevanceContributors — For categorical fields, shows entries with the highest shifts in frequency.

  • @conditionalMedian — For numerical fields, the median of values in logs that meet the condition

  • @baselineMedian — For numerical fields, the median of values in logs that do not meet the condition

Examples

Analyze all fields for slow API responses

relevantfields where Time > 400

Focus analysis on specific fields

relevantfields Controller, Path, Service where Time > 400

Identify drivers of Lambda timeouts

relevantfields where Duration > 5000