• Proxy: support Wavefront histograms in raw logs ingestion
• Proxy: raw logs ingestion refactoring, support incoming raw logs payload over HTTP
• Proxy: fix #370
• Proxy: (future feature) support enforcing backend-configured limits at the proxy
• Proxy: don't start processing the backlog until first successful check-in (eliminate the possibility of getting a few HTTP 408 after start, which can be confusing to users)
• Proxy: support custom RED metric tags for Jaeger and Zipkin
• Proxy: bugfixes for Jaeger and Zipkin integrations (filter empty tags, correctly set custom application annotation)
• Proxy: attempt to automatically correct situations when server endpoint URL is incorrectly configured, as well as provide a more user-friendly error message
• Proxy: address queueing issues in Windows environments (work around exclusive file locking quirks)
• Proxy: make default settings for the out-of-memory guard less aggressive + add more metrics
• Proxy: update default receive buffer size for pushListenerPorts from 4KB to 32KB (to allow for seamless histogram pass-through)
• Dependencies update: jackson -> 2.9.9, libthrift -> 0.12.0, jetty -> 9.4.18.v20190429, netty -> 4.1.36.Final