Wavefront Libraries 4.35 [GA Release]

Proxy: Zipkin integration
Proxy: Generate RED metrics from tracing spans
Proxy: Jaeger: Correct handling of negative parentSpanId's when CHILD_OF reference is missing

Wavefront Libraries 4.34 [GA Release]

Proxy: Support sampling for tracing spans

Wavefront Libraries 4.33 [GA Release]

• Proxy: Multiple bugfixes and improvements relevant to tracing data ingestion in Jaeger format
• Proxy: Framework to support authentication for incoming HTTP requests. Supported methods: OAuth 2.0 token introspection, HTTP GET, static token
• Proxy: Further reduce chances of metric collision for duplicate proxy names in container environments

Wavefront Libraries 4.32

• yammer-metrics: Java 9 compatibility

Wavefront Libraries 4.31

• Proxy: support trace format ingestion
• Proxy: limit memory usage at 8G
• Proxy: ~proxy metrics are tagged with processId to prevent metric name collisions in case of duplicate proxy instances
• Proxy: all config setting can be overridden in Docker now
• Proxy: docker image updated to use Ubuntu 18.x
• Proxy: improve proxy stability when processing histogram data in environments not appropriately configured for the load
• Proxy: support DataDog system metrics, as well as relaying requests to DD API
• Proxy: ensure that source tag operations are processed sequentially for each source
• Proxy: reject empty histograms
• Proxy: updated dependencies
• Yammer-metrics: support client connection TTL

Wavefront Libraries 4.30

• Proxy: DataDog format support
• Proxy: internal connection tracking metrics added
• Proxy: rename replaceSource to replaceInput in extractTag* preprocessor rules to avoid confusion
• Proxy: ingestion pipeline refactoring
• Dependency update: Caffeine 2.6.2, Antl 4.7.1
• Java-client: code refactoring

Wavefront Libraries 4.29

• Dropwizard-reporter: now compatible with Dropwizard 1.2.x
• Java-lib: improve performance of WavefrontHistogram
• Proxy: support HTTP POST + gzipped streams for Wavefront and OpenTSDB data ingestion
• Proxy: support pass-through histograms on pushListenerPorts (bypass aggregation)
• Proxy: configurable idle timeout + max frame length
• Proxy: new preprocessor rule "extractTagIfNotExists"
• Proxy: improved histogram-related internal metrics
• Proxy: filter user metrics starting with "~"
• WavefrontReporter: support delta counters and direct ingestion
• WavefrontReporter: reuse TCP connection
• Yammer-metrics: send histogram centroids and counts properly
• Updated dependencies: Jetty 9.4.11

Wavefront Libraries 4.28

yammer-metrics: Maintain consistent reporting interval

Wavefront Libraries 4.27

Proxy: gzip compression for sending metrics to Wavefront is enabled by default
Proxy: support variable sampling rate for logging valid points
Proxy: fixed bug with Graphite 1.1 format tags
Proxy: reduce scheduler overhead when draining buffers under heavy load
Proxy: enable --help command line option
Proxy: support both \u2206 and \u0394 markers for delta metrics
Proxy: block negative values for delta metrics
Proxy: trim token and server config properties
Proxy: remote shutdown sequence bug fixed
Proxy: don't log API token details during installation
yammer-metrics: emit timestamped metrics
yammer-metrics: reduce overhead when sending empty histograms
dropwizard-reporter: emit timestamped metrics
dropwizard-reporter: sanitize metric names

Wavefront Libraries 4.26

Proxy: add support and binaries for OpenSUSE (42.3), SUSE Linux Enterprise Server (12.0, 12.1, 12.2), Oracle Linux (6, 7), Fedora (27)
Proxy: improve queueing performance (reduce thread contention)
Proxy: do not push back to connected clients while draining memory buffers to disk
Proxy: configurable timestamp cut-off limit for future-dated points
Proxy: preprocessor: support placeholders for point tags/metric name/source name in replaceRegex rules
Proxy: preprocessor: add new rule type "forceLowercase"
Proxy: preprocessor: track CPU time spent for every preprocessor rule to identify performance improvement opportunities
Proxy: logs ingestion: support placeholders for point tag values
Proxy: logs ingestion: support floating-point histogram samples
Proxy: reduce overhead for logging validPoints
dropwizard-metrics: Java 9/10 compatibility
yammer-metrics: add ability to not report zero counters and empty histograms