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6ec6f0150d
- Make MetricUtils.registry non-nullable with default no-op implementation. This allows us to remove boilerplate for handling the null case - Rename request context metric names to follow convention
Metadata IO Module
This module contains the core metadata I/O services for DataHub, including system information collection and property management.
Security: Configuration Property Classification
Critical Test: PropertiesCollectorConfigurationTest enforces that all configuration properties are explicitly classified as either sensitive (redacted) or non-sensitive (visible in system info).
Why: Prevents accidental exposure of secrets through DataHub's system information endpoints.
When adding new properties: The test will fail with instructions on which classification list to add your property to. The test file contains comprehensive documentation on:
- The four classification lists (sensitive/non-sensitive, exact/template)
- Template syntax for dynamic properties (
[*]for indices,*for segments) - Security guidelines and examples
Test Command:
./gradlew :metadata-io:test --tests "*.PropertiesCollectorConfigurationTest"
Security Rule: When in doubt, classify as sensitive. This test is a mandatory security guardrail - never disable it.