GRPC logger produces excessive noise at INFO level

[liran-funaro]

Problem

The GRPC logger, initialized in common/flogging/global.go:31, generates excessive log output even at INFO level. This creates significant noise in application logs, making it difficult to identify relevant application-level information.

Impact

• Log files become cluttered with GRPC internal messages
• Harder to debug application-level issues
• Increased log storage requirements
• Reduced log readability

Proposed Solution

Change the default GRPC logger level to ERROR.

Benefits

• Cleaner default log output
• Maintains ability to enable verbose GRPC logging for debugging
• Follows principle of least surprise - most users don't need GRPC internal logs
• Backward compatible - applications can opt-in to verbose GRPC logging

Related Projects

This issue affects all projects that depend on fabric-lib-go, including:

• Fabric-X
• Fabric
• Other Hyperledger Fabric components