Release 1.47.0

1.47.0 (2023-07-05)

Backend Changes

⛔ Breaking Changes

• [SPM] Due to a breaking change in OpenTelemetry's prometheus exporter (details)
  metric names will no longer be normalized by default, meaning that the expected metric names would be calls and
  duration_[buckets|count|sum]. Backwards compatibility with older OpenTelemetry Collector versions can be achieved through the following flags:
  • prometheus.query.normalize-calls: If true, normalizes the "calls" metric name. e.g. "calls_total".
  • prometheus.query.normalize-duration: If true, normalizes the "duration" metric name to include the duration units. e.g. "duration_milliseconds_bucket".

New Features

• [Cassandra] Add Configuration.Close() to ensure TLS cert watcher is closed (@kennyaz in #4515)
• Add *.kerberos.disable-fast-negotiation option to Kafka consumer (@pmuls99 in #4520)
• Support Prometheus normalization for specific metrics related to OpenTelemetry compatibility (@albertteoh in #4555)

Bug fixes, Minor Improvements

• Add readme for memstore plugin (@yurishkuro in 283bdd9)
• Pass a wrapper instead of opentracing.Tracer to ease migration to OTEL in the future [part 1] (@afzalbin64 in #4529)
• [hotROD] Add OTEL instrumentation to customer svc (@afzal442 in #4559)
• [hotROD] Replace gRPC instrumentation with OTEL (@afzal442 in #4558)
• [hotROD]: Upgrade redis service to use native OTEL instrumentation (@afzal442 in #4533)
• [hotROD] Fix OTEL logging in HotRod example (@albertteoh in #4556)
• [hotrod] Reduce span exporter's batch timeout to let the spans be exported sooner (@GLVSKiriti in #4518)
• [tracegen] Add options to generate more spans and attributes for additional use cases (@yurishkuro in #4535)
• Build improvement to rebuild jaeger-ui if the tree does not match any tag (@bobrik in #4553)
• [Test] Fixed a race condition causing unit test failure by changing the logging (@yurishkuro in #4546) resolves #4497

UI Changes

• UI pinned to version 1.31.0.