Rate limit noisy trace exporter warnings

[FrankChen021]

Summary

• reuse the existing component commons RateLimitedLogger in BrpcTraceMessageExporter
• rate limit repeated ITraceCollector initialization and trace send warnings to once per minute
• keep different failure messages separated by using the warning message as the rate-limit key

Testing

• mvn -pl agent/agent-exporter-brpc -am -DskipTests compile

[Copilot]

Pull request overview

This PR reduces log noise in the BRPC trace exporter by introducing rate-limited warning logs, leveraging the existing RateLimitedLogger from the component-commons module. It targets repeated failures during ITraceCollector initialization and trace send operations.

Changes:

• Replaced noisy LOG.warn(...) calls with RateLimitedLogger.warn(...) to rate-limit repeated warnings (1-minute interval).
• Introduced a shared, static RateLimitedLogger instance in BrpcTraceMessageExporter.

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